THE SOUTH AFRICAN NATIONAL ROADS AGENCY SOC LIMITED

CONTRACT NRA N007-010-2011/1

FOR

THE UPGRADING OF NATIONAL ROUTE 7 SECTION 1 BETWEEN ATLANTIS SOUTH (km 26.3) AND KALBASKRAAL (km 39.1)

PROJECT DOCUMENT JULY 2015 TENDER DOCUMENT VOLUME 3 BOOK 2 OF 2 CHIEF EXECUTIVE OFFICER SOUTH AFRICAN NATIONAL ROADS AGENCY SOC LIMITED 48 TAMBOTIE AVENUE VAL DE GRACE PRETORIA, 0184 NAME OF TENDERER: ……………………………………………………………….

Set sequential number

CONTRACT NRA N007-010-2011/1

FOR

THE UPGRADING OF NATIONAL ROUTE 7

SECTION 1 BETWEEN ATLANTIS SOUTH (km 26.3) AND KALBASKRAAL (km 39.1) PROJECT DOCUMENT JULY 2015 TENDER DOCUMENT VOLUME 3 BOOK 2 OF 2 THIS DOCUMENT COMPILED BY: AECOM SA (PTY) LTD WATERSIDE PLACE, SOUTH GATE TYGER WATERFRONT CARL CRONJE DRIVE BELLVILLE 7535

Tel: 021 975 6200 Fax: 021 975 6400 E-mail: kvisser@ero-engineers.co.za UNDER THE DIRECTION OF THE REGIONAL MANAGER THE SOUTH AFRICAN NATIONAL ROADS AGENCY SOC LIMITED THE REGIONAL MANAGER THE SOUTH AFRICAN NATIONAL ROADS AGENCY SOC LIMITED 1 HAVENGA STREET OAKDALE BELLVILLE Tel: 021 957 4600 Fax: 021 910 1699 Email: BredenhannS@nra.co.za

LIST OF CONTRACT DOCUMENTS The following documents form part of this contract: Volume 1: The Conditions of Contract for Construction for Building and Engineering Works Designed

by the Employer (1999), published by the Federation Internationale des Ingenieurs-Conseils (FIDIC) which the tenderer shall purchase himself. (See note 1 below).

Volume 2: The COLTO Standard Specifications for Road and Bridge Works for State Road

Authorities (1998 edition), issued by the Committee of Land Transport Officials which the tenderer shall purchase himself. (See Note 2 below).

Volume 3: The Project Document, containing the tender notice, Conditions of Tender, Tender Data,

Returnable Schedules, general and particular conditions of contract, project specifications, Pricing Schedule, Form of offer and Site Information is issued by the Employer (see note 3 below). The Employer’s Form of Acceptance and any correspondence from the selected tenderer, performance security-demand guarantee and all addenda issued during the period of tender will also form part of this volume once a successful tenderer has been appointed.

Volume 4: The road works drawings. Volume 5: The structural drawings. Volume 6: Materials investigation and utilisation. Volume 7: Environmental Management Programme Report Notes to tenderer: 1. Volume 1 is obtainable from CESA, P. O. Box 68482, Bryanston, 2021. Tel: (011) 463 2022

Fax: (011) 463 7383, email: general@cesa.co.za. 2. Volume 2 is obtainable from SAICE, Private Bag X200, Halfway House, 1685. Tel: (011)

8055947/8, e-mail: civilinfo@saice.org.za or can be purchased from the Employer. 3. Volume 3 is issued at tender stage in electronic format on a CD and contains the

following files: - The full Project Document in PDF format - The returnable forms in word format - The pricing data in excel format

At contract stage Volume 3 will be a bound signed paper copy containing the following

documents: - Returnable schedules relevant to the project - Agreements and Contract Data - Pricing Data - Scope of Work - Site Information

4. SUBMISSION OF TENDER – Of the contract documents, only the following elements of

Volume 3 needs to be submitted in a neatly bound file and in the following order:

- Form of Offer (paper copy) - All returnable schedules (paper copy) - Pricing Schedule (paper copy) - Completed pricing schedule (on CD)

Information provided by a tenderer over and above the above elements of Volume 3 shall be treated as information only and will only be bound into the document if the tenderer notes on Form A4: Schedule of Variations or deviations that the information has a bearing on the tender price.

5. For alternative offers the tenderer shall submit the following additional documentation, clearly marked as ALTERNATIVE, in a separate neatly bound file in the following order:

- Form of Offer (paper copy) copy from CD and state “Alternative Form of Offer” - All returnable schedules (paper copies) applicable to alternative offer, as is

appropriate - Alternative Pricing Schedule (paper copy) - Other relevant information.

TABLE OF CONTENTS PAGE

BOOK 1 OF 2:

PART T1: TENDERING PROCEDURES............................................................................... T1-1

PART T2: RETURNABLE SCHEDULES .............................................................................. T2-1

PART C1: AGREEMENTS AND CONTRACT DATA ............................................................ C1-1

PART C2: PRICING DATA ................................................................................................... C2-1

BOOK 2 OF 2

PART C3: SCOPE OF WORKS ............................................................................................ C3-1

PART C4: SITE INFORMATION ........................................................................................... C4-1

C3-1

______________________________________________________________________________

Part C3: SCOPE OF WORKS ______________________________________________________________________________

C3-2

PART C3: SCOPE OF WORKS TABLE OF CONTENTS PAGE

SECTION A: STANDARD AMENDMENTS ISSUED BY COLTO .............................................. C3-3

SECTION B: PROJECT SPECIFICATION AMENDMENTS TO THE STANDARD SPECIFICATIONS ............................................................................................... C3-4

SECTION C: ENVIRONMENTAL MANAGEMENT PLAN...................................................... C3-227

SECTION D: SMALL CONTRACTOR DEVELOPMENT, TRAINING AND COMMUNITY PARTICIPATION ............................................................................................. C3-280

SECTION E: REQUIREMENTS OF THE OCCUPATIONAL HEALTH AND SAFETY ACT AND REGULATIONS ....................................................................................... C3-291

SECTION F: ADDITIONAL SPECIFICATIONS FOR SPECIFIC WORKS ............................. C3-306

SECTION G: SUPPLEMENTARY SPECIFICATIONS FOR WORKS NOT COVERED BY STANDARD SPECIFICATIONS ....................................................................... C3-313

C3-3

SOUTH AFRICAN NATIONAL ROADS AGENCY SOC LIMITED CONTRACT NRA N007-010-2011/1 FOR THE UPGRADING OF NATIONAL ROUTE 7 SECTION 1 BETWEEN ATLANTIS SOUTH (km 26.3) AND KALBASKRAAL (km 39.1) SECTION A: STANDARD AMENDMENTS ISSUED BY COLTO Notes to tenderer: 1. The Standard Specifications for Road and Bridge Works for State Road Authorities (1998

edition) prepared by the Committee of Land Transport Officials, (COLTO), as amended, shall apply to this contract. The amendments are those issued by COLTO and reproduced in Section A, together with additional amendments as set out in Section B.

2. Where reference is made to the General Conditions of Contract and sub-clauses thereof

in the abovementioned Standard Specifications, they refer to the appropriate edition of the ‘General Conditions of Contract for Road and Bridge Works for State Road Authorities” issued by COLTO (clause 1115 of the Standard Specifications refers).

3. The General Conditions of Contract applicable to this contract are the “Conditions of

Contract for Construction for Building and Engineering Works Designed by the Employer” (1999), published by the Federation Internationale des Ingenieurs-Conseils (FIDIC) and the necessary amendments to the Standard Specifications have been made and included in the Project Specifications contained in this document.

4. The terms “Schedule of Quantities”, (used throughout the Standard Specifications) and

“Bill of Quantities”, (used in all other documents forming part of this contract), and “Pricing Schedule” are synonymous.

As at March 2015 no amendments have been issued.

C3-4

SOUTH AFRICAN NATIONAL ROADS AGENCY SOC LIMITED CONTRACT NRA N007-010-2011/1 FOR THE UPGRADING OF NATIONAL ROUTE 7 SECTION 1 BETWEEN ATLANTIS SOUTH (km 26.3) AND KALBASKRAAL (km 39.1) SECTION B: PROJECT SPECIFICATION AMENDMENTS TO THE STANDARD

SPECIFICATIONS Notes to tenderer: 1. In certain clauses the Standard Specifications allow a choice to be specified in the project

specifications between alternative materials or methods of construction and for additional requirements to be specified to suit a particular contract. Details of such alternatives or additional requirements applicable to this contract are contained in this part of the project specifications. It also contains some additional specifications required for this particular contract.

2. The number of each clause and each payment item in this part of the project specifications

consists of the prefix B followed by a number corresponding to the number of the relevant clause or payment item in the standard specifications. The number of a new series, new clause or a new payment item which does not form part of a series, clause or a payment item in the standard specifications and which is included here, is also prefixed by B followed by a new number. The new numbers follow on the last clause or item number used in the relevant section of the standard specifications.

3. The tenderer shall note that the standard COLTO specification is based on the COLTO General

Conditions of Contract. References to specific COLTO General Conditions of Contract clauses will need to be exchanged for the equivalent clause in the FIDIC Conditions of Contract as amended by the Particular Conditions of Contract to be found in Part C1 of this document. The Employer assumes no responsibility for the contractor’s interpretation of which are the correct relevant clauses.

C3-5

SECTION B: PROJECT SPECIFICATIONS TABLE OF CONTENTS PAGE

COLTO SERIES 1000: GENERAL ............................................................................................. C3-7

SECTION B1100: DEFINITIONS AND TERMS ....................................................................... C3-7 SECTION B1200: GENERAL REQUIREMENTS AND PROVISIONS .................................... C3-10 SECTION B1300: CONTRACTOR'S ESTABLISHMENT ON SITE AND GENERAL

OBLIGATIONS ......................................................................................... C3-38 SECTION B1400: HOUSING, OFFICES AND LABORATORIES FOR THE ENGINEER’S

SITE PERSONNEL .................................................................................. C3-42 SECTION B1500: ACCOMMODATION OF TRAFFIC............................................................ C3-48 SECTION B1600: OVERHAUL ............................................................................................. C3-62 SECTION B1700: CLEARING AND GRUBBING ................................................................... C3-64 SECTION B1800: DAYWORKS ............................................................................................ C3-66

COLTO SERIES 2000: DRAINAGE ......................................................................................... C3-69

SECTION B2100: DRAINS ................................................................................................... C3-69 SECTION B2200: PREFABRICATED CULVERTS ................................................................ C3-73 SECTION B2300: CONCRETE KERBING, CONCRETE CHANNELLING, CHUTES AND

DOWNPIPES AND CONCRETE LINING FOR OPEN DRAINS ................. C3-78

COLTO SERIES 3000: EARTHWORKS AND PAVEMENT LAYERS OF GRAVEL OR CRUSHED STONE.............................................................................. C3-80

SECTION B3200: SELECTION, STOCKPILING AND BREAKING DOWN THE MATERIALS FROM BORROW PITS, CUTTINGS AND EXISTING PAVEMENT LAYERS AND PLACING AND COMPACTING THE GRAVEL LAYERS .................................................................................... C3-80

SECTION B3300: MASS EARTHWORKS ............................................................................. C3-84 SECTION B3400: PAVEMENT LAYERS OF GRAVEL MATERIAL ........................................ C3-92 SECTION B3500: STABILIZATION ..................................................................................... C3-102 SECTION B3600: CRUSHED-STONE BASE ...................................................................... C3-106 SECTION B3800: BREAKING UP EXISTING PAVEMENT LAYERS ................................... C3-110 SECTION B3900: PATCHING AND REPAIRING EDGE BREAKS ...................................... C3-114

COLTO SERIES 4000: ASPHALT PAVEMENTS AND SEALS .............................................. C3-117

SECTION B4100: PRIME COAT ......................................................................................... C3-117 SECTION B4200: ASPHALT BASE AND SURFACING ....................................................... C3-119 COLTO SERIES 5000: ANCILLARY ROADWORKS ............................................................. C3-150 SECTION B5100: PITCHING, STONEWORK AND PROTECTION AGAINST EROSION .... C3-150 SECTION B5400: GUARDRAILS ........................................................................................ C3-151 SECTION B5500: FENCING ............................................................................................... C3-154 SECTION B5600: ROAD SIGNS ......................................................................................... C3-156 SECTION B5700: ROAD MARKINGS ................................................................................. C3-159 SECTION B5800: LANDSCAPING AND PLANTING PLANTS............................................. C3-166 SECTION B5900: FINISHING THE ROAD AND ROAD RESERVE AND TREATING OLD

ROADS .................................................................................................. C3-170

COLTO SERIES 6000: STRUCTURES .................................................................................. C3-171

SECTION B6100: FOUNDATIONS FOR STRUCTURES .................................................... C3-171 SECTION B6200: FALSEWORK, FORMWORK AND CONCRETE FINISH ......................... C3-179 SECTION B6300: STEEL REINFORCEMENT FOR STRUCTURES ................................... C3-181 SECTION B6500: PRESTRESSING OF STRUCTURES ..................................................... C3-195 SECTION B6600: NO-FINES CONCRETE, JOINTS, BEARINGS, PARAPETS AND

DRAINAGE FOR STRUCTURES ........................................................... C3-196

COLTO SERIES 7000: SUNDRY STRUCTURES .................................................................. C3-200

SECTION B7200: REINFORCED EARTH ........................................................................... C3-200 “SECTION B7200: MECHANICALLY STABILISED EARTH WALLS (MSEW) ....................... C3-200 SECTION B7800: SHOTCRETING SPECIFICATION ......................................................... C3-206

C3-6

COLTO SERIES 8000: SUNDRIES ........................................................................................ C3-211

SECTION B8100: TESTING MATERIALS AND WORKMANSHIP ....................................... C3-211 SECTION B8200: QUALITY CONTROL .............................................................................. C3-224

C3-7

COLTO SERIES 1000: GENERAL

SECTION B1100: DEFINITIONS AND TERMS

B1115 GENERAL CONDITIONS OF CONTRACT

Replace clause 1115 with the following:

The General Conditions applicable to this Contract are the Conditions of Contract for Construction for Building and Engineering Works designed by the Employer, (1999) published by the Federation Internationale des Ingenieurs-Conseils (FIDIC). Accordingly, all reference in the Standard Specifications to any other General Conditions of Contract (GCC) has to be amended. The Standard Specifications have been scrutinized and clauses which refer to another GCC identified. These are tabulated below together with the relevant equivalent clause in the FIDIC Conditions of Contract. The context of the reference to the GCC is also noted. Whereas every effort has been made to include all of the affected clauses in the table, there may be some omissions. In every case, however, the FIDIC Conditions of Contract, as amended by the Particular Conditions of Contract in Part C1.2 of this Volume, shall apply and the contractor shall be responsible for interpretation of the equivalent clause CHANGES TO REFERENCES BY THE COLTO STANDARD SPECIFICATIONS TO THE COLTO GENERAL CONDITIONS OF CONTRACT AND FIDIC CONDITIONS OF CONTRACT

COLTO Standard Specification

COLTO General Conditions of Contract 1998

FIDIC Conditions of Contract 1999

Clause No

Page No

Clause No

Description or Reference Clause No

Description or Reference

1115 1100-2 Definition of GCC Definition of FIDIC 1204 1200-2 15 Construction programme 8.3 Construction programme 1204 1200-2 General reference to GCC Applicable to FIDIC 1206 1200-3 14 Setting out of works 4.7 Setting out of works 1209(a) 1200-4 General references to GCC Applicable to FIDIC 1209(e) 1200-5 52(2) Valuation of material brought onto

site 14.5 Plant and material intended for

use in the works. 1210 1200-5 54(1) Certificate of practical completion 10.1 Taking-over certificate 1212(1) 1200-7 49(2) CPA on alternative designs 13.8 CPA on alternative designs 1215 1200-9 45(2) Extension of time for completion due

to abnormal rainfall. 8.4 Extension of time for completion

due to abnormal rainfall. 1217 1200-10 35 Care of the works 17.2 Care of the works 1303(ii) 1300-1 General reference to GCC Applicable to FIDIC 1303(iii) 1300-1 49 Price adjustment Item 13.01(a) 13.7&13.

8 Price adjustment Item 13.01(a)

1303(iii) 1300-2 49 Price adjustment Item 13.01(b) 13.7&13.8

Price adjustment Item 13.01(b)

1303(iii) 1303(iii)

1300-1 1300-2

53 53

Variations exceeding 20% Variations exceeding 20%

Not applicable to this contract Not applicable to this contract

1303 1300-2 12 Payment Item 13.01(c) 8.1 Payment Item 13.01(c) 1303 1300-2 45 Payment Item 13.01(c) 8.4 Payment Item 13.01(c) 1403(c)(ii) 1400-4 40(1) Variation for rented accommodation 13.3 Variation for rented

accommodation 1505 1500-3 40(1) Variation for temporary drainage 13.3 Variation for temporary drainage Item 15.08 1500-8 48 Payment of Provisional Sum 13.5 Payment of Provisional Sum Item 15.09 1500/8 48 Payment of Provisional Sum 13.5 Payment of Provisional Sum Item 15.11 1500-8 48 Payment of Provisional Sum 13.5 Payment of Provisional Sum Note (2) 3100-4 40 Payment for prospecting for materials 13.5 Payment for prospecting for

materials 3204(b)(iii) 3200-2 40 Payment for oversize material 13.3 Payment for oversize material 3303(b) 3300-2 2 Engineer’s decisions, with reference

to materials classification 3 Engineer’s decisions, with

reference to materials classification

Item 44.06 4400-3 General reference to GCC, PC Sums 13.5 Provisional Sums in FIDIC Item 45.06 4500-3 General reference to GCC, PC Sums 13.5 Provisional Sums in FIDIC 5803(c) 5800-3 40 Variation, for landscaping 13.3 Variation, for landscaping 5805(d) 5800-4 40 Variation, for grassing 13.3 Variation, for grassing Item 58.10 5800-10 48 Payment for Extra Work 13.5 Payment for Extra Work 8103(c) 8100-1 40 Variation, for testing material 13.3 Variation, for testing material

C3-8

COLTO Standard Specification

COLTO General Conditions of Contract 1998

FIDIC Conditions of Contract 1999

Clause No

Page No

Clause No

Description or Reference Clause No

Description or Reference

Item 81.02 8100-26 General reference to GCC, Provisional Sums

Applicable to FIDIC, Provisional Sums

Item 81.03 8100-26 22 Clearance of site on completion, with reference to core drilling

11.11 Clearance of site on completion, with reference to core drilling

In addition, all references to “constructional plant” in the Standard Specifications” shall be interpreted to have the meaning of “contractor’s equipment” as defined in clause 1.1.5.1 of the FIDIC Conditions of Contract.” B1155 WORK IN RESTRICTED AREAS Add the following: “Any omission of pay items from the pricing schedule with regard to additional or extra over payment for work in restricted areas should be regarded as deliberate and any additional cost incurred shall be included in the bulk rates tendered. (Refer also to clause B1209(g))” Add the following clauses: “B1156 OTHER DEFINITIONS The COLTO Standard Specifications for Roads and Bridge Works for State Road Authorities (1998 edition) has been written for all contractors, employers and engineers. Similarly, the works and the site are not defined and the general nature of the entities and elements that collectively constitute construction under a contract are characterized by the use of lower case letters throughout. These project specifications continue to use lowercase spellings in order to avoid the appearance of the capitalised and non-capitalised words to describe or prescribe the same elements of work required on this project. However, for the purposes of this contract the following definitions shall apply: Contractor

The Contractor and the contractor is the same persona defined under clause 1.1.2.3 of the FIDIC Conditions of Contract, but who will only be formally identified by the completed Form of Acceptance C1.1.2 in this document and which will be bound into the final contract document. Employer

The Employer and employer is the same persona and is defined in C1.2.2 Contract Data, and clause 1.1.2.2 of the FIDIC Conditions of Contract. Engineer

The Engineer and engineer is the same persona and is defined in the C1.2.2 Contract Data, and clause 1.1.2.4 of the FIDIC Conditions of Contract. Site

The site is defined in clause 1.1.6.7 of the FIDIC Conditions of Contract. It is bound by the limits of construction as shown in the drawings or the title of the project and extends to also include the following: Areas outside the construction zone areas where accommodation of traffic is placed. All borrow pits defined in the applications approved by the relevant Department of Minerals and Energy. All haul roads constructed by the contractor for purposes of access.

C3-9

Any non-adjacent sites specified in the contract documentation. The contractors and his subcontractors camp sites Works The works is described in Part C4 of this document and is as defined in clause 1.1.5.8 of the FIDIC Conditions of Contract and prescribed in Sections B, C, D & E of this Volume. Prime cost Is a specific type of Provisional Sum for which payment is made on the production of invoices showing the cost price of the implementation or installation of the service required. Services rendered in this manner carry a mark-up for which a rate is offered at tender stage to cover all the tenderer’s handling, supervision and liability costs and profit in providing the item or services. Provisional Sum Is a sum which is specified in the contract as a provisional sum, for the execution of any part of the works or the supply of plant, materials or services under sub-clause 13.5 (Provisional sums). B1158 SABS SPECIFICATIONS AND TMH 1 Where reference is made in this specification or the standard specifications to SABS specifications and / or TMH 1, the latest published national standard shall be applicable. Use: https://www.sabs.co.za/content/uploads/files/SABS%20Catalogue%20February%202012%20(abridged).pdf for the most up-to-date versions of the various standards. B1159 AGGREGATE SIZE Where reference is made in this specification or the standard specifications to aggregate size, nominal aggregate size or maximum aggregate size, the aggregate size as listed shall be replaced with the new corresponding aggregate size as indicated in the following table:

Aggregate size New aggregate size 26,5 28 19 20

13,2 14 9,5 10 6,7 7

4,75 5 2,36 2 1,18 1

C3-10

SECTION B1200: GENERAL REQUIREMENTS AND PROVISIONS B1202 SERVICES Add the following first paragraph: “The provisions of this clause with regard to detection, protection and repair of damage caused as a result of the contractor’s operations, shall also apply mutatis mutandis to existing structures such as street lighting, bridges, existing drainage inlets and outlets, stormwater pipe crossings, existing subsoil drainage systems, or other structures within the site of the works. All reference to services in this clause shall also mean traffic monitoring devices such as Comprehensive Traffic Observation (CTO), Speed Measuring Device (SMD) and Weigh-in-Motion (WIM) stations.” Add the following to the second paragraph: “Various types of services, both overhead and underground, exist within the boundaries of the site. It is envisaged that it will be necessary for the contractor to arrange for the removal, relocation or protection of existing services. Should any work become necessary then all work shall be done strictly in accordance with the requirements of the relevant service owner and in accordance with the requirements of these project specifications and the standard specifications where applicable.” In the second paragraph, delete the word “utility” at the end of the second line. Add the following after the last paragraph: “Table B1202/1 lists the contact details of all known services owners on the site in terms of applying for the required wayleaves. All known services requiring removal, realignment or temporary replacement on the services drawings.

Table B1202/1

CONTACT DETAILS OF SERVICE PROVIDERS FOR WAYLEAVE PURPOSES

Service Description Service Provider Contact Person Contact Details

Electrical Eskom

Rochelle McPherson Shaun Swanepoel

021 980 3042 021 980 3913

Telkom Telkom Jonathan Visagie

021 414 5617 visagija@telkom.co.za

Water, Sewer, Irrigation, Electrical

Swartland Municipality

Esmari Steenkamp 022 487 9400 steenkampe@swartland.org.za

CTO Mikros Traffic Monitoring

Peter Rohwer 021 710 2425 peterr.syntell.co.za

The contractor is required to familiarise himself and comply with, any special requirements/conditions of service providers relating to working in close proximity of any existing service. The special requirements listed below have been received from the service providers, and serve for information purposes only. They will need to be confirmed by the contractor in gaining the required wayleaves before the commencement of the construction works. The contact details of the known service providers on the site are also provided below.

C3-11

Telkom Conditions:

(i) Should alterations or relocation of existing infrastructure be required, such work will be done at the request and cost of the applicant.

(ii) Contact Telkom’s representative Mr Hannes Du Toit at telephone number 022 713 4897 or 081 401 2819 and Mr Paul Simpson at 021 552 6583 or 081 365 8603 at least 48 hours prior of commencement of construction work.

(iii) Notify Telkom (Mr Jonathan Visagie at Tel 021 414 5617, visagija@telkom.co.za) within 30 days of completion of the construction work.

(iv) No mechanical plant or vibrator type compactors may be used within three metres of any Telkom plant (i.e. any Telecommunications equipment above or below ground level).

(v) As the indicated position of affected Telkom plant is approximate, Mr Paul Simpson (Tel 021 552 6583) must be contacted at least 48 hours prior to commencement of the work, upon which the actual location of Telkom Plant will be indicated on-site.

(vi) A written request must be submitted to Telkom for consideration should the applicant require Telkom plant to be relocated. The cost of such relocation will be recoverable from the applicant.

(vii) It is the responsibility of the applicant to verify the existence of the indicated plant and to notify Telkom immediately should the applicant locate any Telkom plant which is not indicated on the plans.

(viii) Should the applicant expose any Telkom plant, the safeguard thereof will be the applicant’s full responsibility.

(ix) Failing to comply with the above conditions or any special conditions addendum hereto will be regarded as gross negligence and the applicant will be held responsible for any damage or loss as a result thereof.

Eskom Conditions:

(i) There is a 9-metre building and tree restriction on either side of the centre line of a 11-kV power line and a 15.5 metre building and tree restriction servitude on either side of the centre line of a 132-kV power line which must be observed in all future developments.

(ii) Eskom’s services and equipment must be acknowledged at all times and may not be tampered with or interfered with.

(iii) No construction work may be executed closer than 10 (ten) metres from any Eskom structure or structure-supporting mechanism.

(iv) Natural ground level must be maintained within Eskom reserve areas and servitudes. (v) No machinery is allowed within a distance of 3 metres of the 11 kV overhead power line

conductors. (vi) All work within Eskom reserve areas and servitudes must be carried out in accordance with

the requirements of the Occupational Health and Safety Act 85 of 1983 as amended. Special attention must be given to the clearances between Eskom’s conductors. Structures, cables, electrical apparatus and proposed work as stipulated by Regulation R15 of the Electrical Installations Regulations of the aforementioned Act or any other legal requirements.

(vii) Eskom shall not be liable for the death or injury of any person, or for loss of or damage to any property, whether as a results of the encroachment or use of the area where Eskom has its services, by the applicant, his/her agent, contractors, employees, successors in title and assignees.

(viii) The applicant indemnifies Eskom against loss, claims or damages, including claims pertaining to interference with Eskom services, apparatus or otherwise.

(ix) Eskom shall at all times have unobstructed access to and egress from its services. (x) No dumping shall be allowed within Eskom Services. (xi) Any development which necessitates the relocation of Eskom’s services will be to the

account of the developer. (xii) No work is allowed within Eskom reserve areas and servitudes. Swartland Municipality Conditions (Civil Infrastructure)

(i) Before commencement of construction/excavation/drilling the contractor has to contact the municipality to point out, on site, the locations of existing infrastructure. There may be underground civil services of which the locations are unknown. Contact Mr J. Balie to point

C3-12

out the exact locations of water and sewer services and Mr K. Bretzke for storm water infrastructure, on site. Both Mr Balie and Bretzke can be reached at the Municipality’s Malmesbury offices at telephone number 022 487 9400 or alternatively on cell numbers 076 963 6484 and 082 966 0822 respectively.

(ii) If activities necessitate any breakage of or damage to existing civil infrastructure, the municipality will require a comprehensive report on the anticipated damage and complete design and specifications from a Professional Engineer for the subsequent repairs of such damage. Only after consideration and approval of the aforementioned will the contractor is allowed to continue with intended activities.

(iii) If the activities results in damage of existing infrastructure the cost of repairs will be for the contractor. Any reparations will have to comply with the relevant norms and standards as set out by the municipality.

(iv) Work undertaken shall comply with the stipulations under the Health and Safety Act, Act 85 of 1993.

Swartland Municipality Conditions (Electrical):

(i) Before commencement of construction/excavation/drilling the exact location of electrical services must be pointed out by Swartland Municipality’s Electrical Department, contact Mr Chris van Zyl (Cell. 072 021 7915 or Tel. 022 487 9400 ext. 2245).

(ii) No machine excavation/drilling are allowed within 2 metres on either side of the underground electrical services. Such services shall be exposed by means of hand excavation (shovel only) under direct supervision of a representative of Swartland Municipality. Any damage to electrical services, pointed out, shall be for the account of the applicant. Swartland Municipality’s apparatus may not be used as support to non-municipal services or/as bill boards.

(iii) Work undertaken shall comply with the stipulations under the Health and Safety Act, Act 85 of 1993.

(iv) Altered cable routes must be approved by the Electrical Engineer of Swartland Municipality. The contractor shall take the information above and that stated in the project data into consideration when drawing up his construction programme as well as the calculation of his tendered rates. No additional payment or compensation will be applicable to any additional costs or delays that he may incur as a result of compliance with these regulations, except as measured and paid for under the relevant items listed in the schedule of quantities.” Add the following:

“(a) Existing Services

Prior to commencing work, the contractor shall confer with all authorities and departments concerned and obtain the necessary wayleaves for both overhead and underground services affected by the works and shall satisfy himself that he has obtained all the relevant information required to complete the contract. The contractor shall carry out the works with the minimum interference to existing services. He shall co-operate with all authorities and departments concerned and he shall be solely responsible for carrying out the following operations and checks:

(1) Complete all the necessary investigations to confirm the exact location and type of all existing services, and document these on a set of drawings to be given to the Engineer.

(2) He shall give all authorities and departments at least fourteen (14) days written notice of the

intention to commence work on laying and/or relaying of any particular services. (3) He shall set out the lines and levels of kerbs, pipes, culverts and any other necessary

features of the contract in order that authorities and departments are able to lay and/or relay services correctly (where applicable).

It shall be clearly understood that obtaining the necessary wayleaves and any extra work, such as the removal of any portion of the works already executed either by the contractor or other authority or department and its subsequent re-execution, which is caused by the contractor's failure to observe and carry out his responsibilities as specified, will be at his own cost.

C3-13

If the contractor considers that the progress of the works is being retarded by the failure of any authority or department to lay, remove or divert pipes, ducts, services, cables or poles within a reasonable time, he shall immediately notify the engineer in writing, stating clearly the number of days of delay claimed. The engineer will then decide whether such a claim is justifiable, and in the event of the claim being accepted he will hand to the contractor a certificate stating clearly the number of days of delay sanctioned. The cost of repairing any damage to services, due to miscalculations or negligence on the part of the contractor or his failure to carry out the duties set out in this clause, shall be borne by the contractor. (b) Protection of overhead and underground services

Services and sub-surface obstructions likely to be affected by the work, based on available records and surveys, have been shown on the drawings. Although every care has been exercised in the presentation of the available data, the employer cannot and does not vouch for the accuracy or completeness of the information shown. The contract provides for hand excavations at the start of the contract in order to confirm the position of the existing services and identify unknown services. Whenever the contractor deems it necessary to determine the exact location of an existing service or obstruction, he shall, at his own expense, make any examination that he may consider desirable in advance of the work, and the employer does not accept any liability for loss, damage or delay to the contractor as a result of the non-location or inaccurate location of services or obstructions. Where no underground services are shown on the drawings or scheduled, but the possibility of their presence can be reasonably inferred, the contractor shall in collaboration with the engineer, search for such services to establish their positions well in advance of the work. A full report shall then be submitted in good time to the engineer, to enable the necessary arrangements for the protection, removal or diversion of the services before work is commenced in their vicinity. In the event of damage to existing services, the contractor shall take such immediate action as is necessary to prevent further damage or danger to life or property and shall immediately notify the engineer who will issue instructions as to the necessary repairs or protective measures to be taken. The cost thereof shall be borne by the contractor irrespective of whether the repairs or protective measures were carried out by him or by or on behalf of the service authority or department concerned. As soon as an underground service not shown on the drawings is discovered, it shall be deemed to be a known service and the contractor will be held responsible for any subsequent damage to it. If such service is damaged during the course of its discovery, the contractor will be reimbursed for the cost of making good such damage, unless it is established by the engineer that the contractor did not exercise reasonable diligence and care and that the damage was avoidable. (c) Condition of existing services

The contractor acknowledges that he has inspected and examined all known existing services and all existing services subsequently discovered, as contemplated in (a) above and is satisfied that all such services were in an acceptable and serviceable state at the commencement of the works, alternatively, upon discovery thereof as contemplated in (a) above. In the event of a dispute as to the acceptability and/or serviceability of an existing service at the commencement of the works or upon the discovery of such service, the contractor shall bear the onus of proving that the service in question was not in an acceptable and/or serviceable state at the commencement of the works. (d) Maintenance, protection and relocation of existing services

During the course of the works, all existing services including traffic signals, watermains, sewers and stormwater reticulation, electricity transmission and telephone lines, cables, poles and conduits whether in service or not shall be protected, supported and maintained to the satisfaction of the service authority or department concerned and the engineer. The contractor shall bear all costs in this regard.

C3-14

Where a bank of underground ducts, cables, etc are crossed over a distance of less than 1.0 m they shall be regarded as a single crossing. Hydrants under pressure, watermain valve covers and manholes shall be kept unobstructed and accessible at all times. Where the existing stormwater system is affected by the roadworks, drainage pipes and structures will have to be upgraded, adapted or demolished and new drainage pipes and structures constructed. The covers and frames of service manholes and catchpits will have to be adjusted where they are affected by the roadworks. (e) Work in close proximity to existing services

The contractor shall note that no mechanical excavators or vibratory type compactors may be used within three (3) metres of any telecommunications or electrical services. No pegs or stakes shall be driven into the ground in the vicinity of underground services unless their exact positions have been determined. The contractor’s attention is drawn to the following with regard to work done in the proximity of existing Telkom underground services:

(i) The contractor shall ascertain the depth and extent of the existing underground services by the digging of inspection holes at suitable intervals and provide the engineer with a log clearly identifying the number and depths of the cables / ducts along the entire length of the underground service.

(ii) For sections of the underground services where earthworks and/or compaction will take place within 3m of the cables, the cables / ducts will be either temporarily relocated or protected beforehand to the satisfaction of the Telkom officials.

The contractor's attention is drawn to the following with regard to work done in the proximity of ESKOM and other electrical services:

(i) Machinery and Occupational Safety Act (Act No 6 Of 1983) with Regulations Clause D16 (7) Excavations: "The builder or excavator shall ascertain as far as practicable the location and nature of underground services likely to be affected by the excavation and take such steps as may be necessary to prevent danger to persons."

(ii) The Electricity Act (Act No 40 Of 1958)

Section 51(3): Offences and Penalties: “Any person who without legal right (the proof of which shall be upon him) cuts or damages or interferes with any apparatus for generating, transmitting or distributing electricity, shall be guilty of an offence and liable on conviction to a fine not exceeding R1 000,00 or to imprisonment for a period not exceeding twelve months."

The contractor shall take the above into account in the drawing up of his construction programme and in the calculation of his tendered rates, and shall note that no additional payment or compensation will be allowed for any additional costs or delays incurred as a result of compliance with these regulations, except as measured and paid under the items listed in the schedule of quantities. The contractor shall allow all reasonable access to the representatives of any authority or department for the purpose of maintaining, laying and/or relaying any services, cables or mains during the period of the contract. Permanent alterations to existing services ordered in writing by the engineer, and for which no separate provision has been made in the bill of quantities, will be paid for under dayworks if required.”

C3-15

B1204 PROGRAMME OF WORK

Replace the entire clause with the following:

“(a) General requirements

The contractor shall, for approval purposes, submit to the engineer within the time stated in the Contract Data, three paper copies and an electronic version of a realistic programme for the execution of the complete scope of the works. The programme shall be in the form of a bar chart (Gantt chart) or any other time-activity form acceptable to the engineer, and shall preferably be produced using the “Microsoft Projects” software program. If the contractor utilises an alternative similar software package, he shall make a licensed version of the software and an electronic copy of the programme of the works available to the engineer for progress monitoring purposes for the duration of the works. The contractor shall ensure that he has at his disposal staff with the necessary expertise to develop and maintain the programme for the duration of the contract and to provide the information required by the engineer as specified hereunder. The submission of a realistic programme for approval, the regular updating thereof, and reporting on progress, making software available to the engineer, all as described in this clause, is deemed to be a time-related contractual obligation. Failure to comply with this obligation shall entitle the engineer to withhold all or part of the payment due under item 13.01(c) until such time as the contractor has fulfilled his obligation to the satisfaction of the engineer. The contractor shall base his initial programme of work on the scope of work as described in the project specifications and in the site information clause C4.1.2: Construction Strategy. This programme shall be reviewed on a regular basis by the contractor in accordance with changing circumstances, variations to the work ordered by the engineer and delays. In drawing up the programme the contractor shall make allowance for the following:

(i) All special non-working days defined in the Contract Data. (ii) The expected delays defined in B1215: Extension of time resulting from inclement weather as

a terminal float. (iii) The following embargo hours and days:

(1) The entire length of the carriageway of this contract shall accommodate two-way traffic across the full width of at least one carriageway width without a step in level in the road surface during the following periods: Year-end breaks as published by SAFCEC Between the Thursday prior to Easter and the Tuesday after Easter (inclusive).

Although there is no embargo period specified for the construction of the asphalt wearing course layer and the 20mm Cape Seals, the limitations and requirements specified in Sections B4200 and B4600 of the COLTO Standard Specifications for Road and Bridge Works (1998) and the Project Specifications must be adhered to, especially during the months from May to August (inclusive). No traffic shall be accommodated on any section of surfaced road which forms part of this contract, without a painted centre line and road studs (temporary or permanent). The Contractor must therefore programme his work so that sections on which work has started are completed before the abovementioned periods start. There will not be additional payment for re-establishment. On sections where no work has commenced, the existing road marking and studs will be sufficient.

(iv) The following restricted working conditions:

(1) Two-way traffic shall be accommodated at all times. The only exception to this will be when maintenance work i.e. pavement and surfacing repairs is performed on the carriageway under traffic. The contractor shall then close not more than one half or

C3-16

such other agreed width of a carriageway to traffic at any one time, to be able to accommodate at least unidirectional traffic on the remaining width of carriageway.

(2) The Contractor shall be allowed to re-route two-way traffic between the two

carriageways on condition that the geometric layout of the cross over sections comply with the minimum requirements of the Employer.

(3) A number of the bridge structures consist of an A and B set at a specific stake value

for the northbound and southbound carriageways respectively. The A and B structures can only be constructed separately for each carriageway at different stages due to traffic accommodation restrictions.

(4) The Engineer may require the contractor to assist with the accommodation of traffic at

the main intersections on this contract (the Rondeberg, Klein Dassenberg, Kalbaskraal and Chatsworth intersections), to improve traffic flow during peak traffic periods as well as any other period.

(v) Meeting the requirements of the Environmental Management Plan (EMPl) and

Environmental Management Programme (EMPr).

(vi) Railway constraints

The contractor is to be aware that a portion of the work (Bridges B0384A and B0384B) entails working over or in the vicinity of a Transnet rail line. Allowance for Transnet’s own costs of occupation has been made by means of a provisional sum. Any other costs incurred by the contractor shall be deemed to be provided for in the applicable rates tendered by the contractor. The contractor must program his activities in such a way that minimum occupation of the rail line is required in order to minimize Transnet costs. In all instances the contractor must note the requirements of the Transnet E7/2 (July 1998) Manual “Specification for works on, over, under or adjacent to railway lines and near high voltage equipment”. Specific reference should be made to the horizontal and vertical clearances to rail lines. The contractor’s construction programme and construction activities shall be subject to approval by Transnet’s Train Operation Office. Some work will require occupation of the rail line (incl. In-situ deck support work and concrete pours that pose a risk to endanger the rail by e.g. shutter failure) which can only be granted by the Train Operation Office. The contractor’s occupation requirements, which are to be submitted at Tender Stage, are subject to the final approval of Transnet and adjustments may be required.

(vii) The time needed for preparation and approval of the various mix designs specified in the

relevant construction sections of the Scope of Works. (viii) A period of 5 months from the appointment of the works contract for the completion of the

installation of the new Telkom optical fibre lines along the N7. An up-front payment to Telkom will be required within two weeks of the commencement of the contract in order to begin this work. This work will need to be completed by Telkom before work can commence over the existing Telkom Optical Fibre lines.

(ix) Other constraints include:

Changes to the accommodation of traffic must be done at a time of low traffic flow, with the least confusion and traffic management problems envisaged. This will typically be done during night time hours.

Stormwater must be handled during all stages of the contract. This initial indicative programme shall realistically account for the forecast cashflow within the defined contract period, and as provided on Form D5: SCHEDULE OF ESTIMATED MONTHLY EXPENDITURE. An example of an illustrative programme is shown on the next page. The contractor

C3-17

shall not slavishly copy this example, which is provided to illustrate that the required work can be realistically programmed within the contract period at the estimated cost. If an alternative contract period is offered, the contractor shall submit a separate programme with the alternative tender.” The principle of non-compliant costs being imposed for extended lane closures shall be applied whenever the contractor fails to complete work zones within the periods allocated for completion according to the first programme provided in terms of clause 8.3 (b) Programme input and output

The programme shall clearly show:

The proposed rate of progress in order to complete the works within the time for completion, showing the various activities, their duration and proposed resource levels (major plant, supervision, skilled personnel and labour) for each element of the works. Sufficient detail shall be provided to enable the engineer to gauge construction progress during the execution of the works. All activities, including establishment on site, accommodation of traffic, trimming and finishing and the completion of all minor ancillary works are to be included in the programme.

Daily production rates for each activity A work breakdown structure that identifies all major work activities per AOT portion

and per structure (including establishment; accommodation of traffic (AOT); major services relocations; earthworks, layerworks and surfacing per AOT portion; roadworks finishing; shoring and excavation works at structures; ground improvements and/or piling at structures; foundations; piers; abutments; decks; retaining wall structures; parapets; etc),

The sequence of activities and any dependencies (time or resource related) between them.

Scheduled start and end dates for each activity, The critical path activities. The amount of slack time for non-critical activities. Delivery periods for key long lead-in items Key dates in respect of work to be carried out, or information, etc., to be provided by

others. Other information specifically required by the engineer.

When drawing up his programme, the contractor shall, inter alia, take into consideration and make allowance for:

Site establishment Submission and approval of a Health & Safety Plan prior to commencing work Compliance with the Environmental Management Plan and Programme Expected weather conditions and their effects Known physical conditions or artificial obstructions Special non-working days Notice periods required Procurement and delivery periods for materials Utilising the escorting system to transport materials throughout the site Time for testing and approvals of materials designs Training and the implications of training (learning curve etc.) The accommodation and safeguarding of public traffic Dealing with, altering and installing services Weather and operational limitations regarding layerworks and concrete construction All other actions required in terms of this contract

The following details shall be submitted together with the programme:

the number of working hours per day, working days per week, assumed holiday or shut down periods on which the programme is based

The overall labour and major plant resource levels on which the programme is based

C3-18

The detailed traffic accommodation proposals on which the programme is based (road or lane closures, lengths of sections to be worked, timing etc)

The anticipated value of work to be done during each month Adjustments to the critical-path programme will, inter alia, serve as the basis for determining extension of time to which the contractor may be entitled. It is therefore in the contractor's interest to provide a comprehensive programme giving as much information as possible about the times allowed for the various activities as well as resource or other limitations affecting the programme. Failure to comply with any of these requirements entitles the engineer to use a programme based on his own assumptions to evaluate claims for extension of time for the completion of the Works. (c) Programme approval, amendment and updating

Once approved by the engineer in writing, this works programme shall be known as the approved programme in terms of clause 8.3 of the general conditions of contract. The order and method of work, i.e. the construction strategy, on which it was based, shall not be deviated from without the engineer's written consent. Any unauthorised deviation from the approved programme by the contractor will be at his own risk, and no claim for delay arising there from will be considered. Minor revisions to the approved programme may be introduced from time to time by mutual agreement between the contractor and the engineer. Should the engineer believe that a major revision of the programme is required, the contractor will be notified in writing and a revised programme for the balance of the works shall be submitted within two weeks of receipt of such notification. Once approved, the revised programme shall henceforth be regarded as the latest approved programme in terms of the said clause 8.3. The approval by the engineer of any programme shall have no contractual significance other than that the engineer would be satisfied if the work is carried out in accordance with such programme and that the contractor intends to carry out the work in accordance with the programme. Nor shall it limit the right of the engineer to instruct the contractor to vary the programme should circumstances so require. The above shall not be taken to limit the right of the contractor to claim for additional costs or extension of time that he may be fairly entitled to in terms of the general conditions of contract for delays or disruption to his activities. Should the contractor fall behind with the approved programme the employer may, without prejudice to the employer’s rights, require the contractor to submit, within seven days of the date on which he has received a notice to this effect, a revised programme, which indicates the manner in which the contractor undertakes to complete the works within the required time. Any proposal in the revised programme to accelerate the rate of progress shall be accompanied by positive steps to increase production by more and/or better labour and equipment being provided on the site or by the available labour and equipment being utilised more effectively. In such a case the contractor shall also provide actual plant and labour resource details together with his revised programme of how the planned acceleration of the works is to be implemented. Should the employer request, and the contractor undertakes to finish, the whole or part of the works ahead of the time originally required by the contract, payment for accelerating the work shall be made only if agreed on in writing beforehand. (d) Programme updating and reporting

The contractor shall submit to the engineer as often as he may require, but at least prior to each monthly site meeting, a progress report that shall include the following:

(i) Two paper prints of the latest approved programme duly updated and regenerated to indicate for each activity, the actual progress versus its baseline and its effect on the outstanding activities. (ii) A summary of progress on site over the month immediately preceding the monthly site meeting. This shall be in the form of a detailed narrative to the approved programme.

C3-19

(iii) Details of activities running late, indicating what steps have been or will be taken to ensure that the work is completed within the specified time. (iii) A schedule of delays that the contractor considers excusable in terms of the contract. (v) A report on all labour, plant and materials on site including an update on the status of the

contract procurement targets and other requirements of Part D of this specification. The contractor shall provide such information on the client's standard forms. The engineer shall provide the contractor with an electronic version of the applicable appendices. The contractor shall also be required to provide this information to the engineer in electronic format prior to the monthly site meeting.

The report shall be submitted two working days before the monthly site meeting. Failure on

the part of the contractor to provide such a report (whole or part thereof) in terms of these specifications shall be interpreted as non-compliance with his time related general obligations under pay item 13.01(c). In such a case the engineer shall at his sole discretion determine the amount of money to be withheld from the contractor's next payment certificate.

Once a week the contractor shall submit to the engineer, “a rolling programme” extracted from the updated latest approved programme covering the forthcoming two week period with major activities broken down into daily activities.

No separate payment will be made for observing these requirements. The costs of so doing shall be included in the amounts tendered for item 13.01 “The contractor's general obligations." The engineer may demand from the contractor a major revision of the programme. Such a revision shall be submitted for comment within fourteen (14) days of the demand.”

B1205 WORKMANSHIP AND QUALITY CONTROL

Insert the following heading after the title:

“(a) General”

Insert the following as sub-clauses after the first paragraph:

“(b) Quality Systems

The contractor shall implement a quality control system that replicates an ISO 9002 and appoint a quality manager who shall ensure that members of the contractor’s staff comply with the requirements of the quality system. The quality system and the methods used to implement it shall be described in a quality plan produced by the contractor. The quality manager shall be resident on site full time. The contractor shall submit the quality assurance system he proposes using to the engineer, for his approval, within two weeks of the site handover. The system shall record the lines and levels of responsibility and indicate the method by which testing procedures will be conducted. Once accepted by the engineer the contractor shall not deviate from it unless written notification of proposed changes have similarly been submitted and approved. The system shall provide for a method statement for each construction activity for which a pay item is provided in the Pricing Schedule. Each method statement shall be submitted to the engineer for his approval two weeks prior to commencement of the activity. Where appropriate the contractor shall make use of the employer’s manuals in preparing his method statements. No construction activity shall commence before the engineer has approved the contractor’s quality control system. The contractor's attention is also drawn to the requirements in section 8100 for the submission to the engineer for prior approval of certain materials and mix designs accompanied by the relevant test results."

C3-20

Amend the third paragraph to read as follows:

"The intensity of control and of tests to be conducted by the contractor in terms of these obligations shall meet but, not be limited to, that specified in clause B8209 and shall be adequate to ensure that proper control is being exercised."

B1206 THE SETTING OUT OF WORK AND PROTECTION OF BEACONS

Replace “clause 14” in the first paragraph with “clause 4.7”

Add the following after the first paragraph:

“It is a specific requirement of this contract that the contractor will have to establish his own reference and control beacons for the setting-out and control of the works. The position of the works shall generally be as indicated on the drawings but shall be confirmed on site by the engineer. Survey work will not be measured and paid for directly and compensation for any work involved in staking or setting out will be deemed to be covered by the rates tendered and paid for the various items of work included in this contract.” Add the following at the end of the fourth paragraph:

“Road markings, particularly the divergent/convergent lines of ramp interchanges and no overtaking barriers are also elements of the road that require proper setting out. The contractor shall prove to the engineer that critical reference points have been satisfactorily recorded for later reinstallation before any work commences that will obliterate the existing markings.” Delete “and of clause 14 of the general conditions of contract” in the sixth paragraph.

Add the following after the eighth paragraph:

“For referencing and recording purposes stake values at 100 m intervals shall be clearly indicated along the road edge. Furthermore the contractor shall reference all road markings to allow for the reinstatement thereof after completion of the sections of road reconstruction, surfaced and/or sealed under this contract.” Add the following paragraph:

“The contractor shall take care that property beacons, trigonometrical survey beacons or setting-out beacons are not displaced or destroyed without the consent of the engineer. Property beacons and trigonometrical survey beacons that have been displaced or destroyed shall be replaced by a registered land surveyor, who shall certify such replacement. The cost of replacing all beacons displaced or destroyed during the course of the contract without the consent of the engineer shall be the contractor’s responsibility and included in the tender rates”. Add the following:

“The contractor is to note that the co-ordinates shown on all drawings relate to the WGS 84 survey system.”

C3-21

EX

AM

PL

E O

F I

NIT

IAL

PR

OG

RA

MM

E

C3-22

B1207 NOTICES, SIGNS AND ADVERTISEMENTS Delete the third paragraph and replace with the following: “All signboards erected in accordance with the drawings shall be removed at the same time as the de-establishment of the contractor’s camp. Payment under sub-item 13.01 for the final instalment of 15% of the tendered lump sum shall not be made unless all the advertisements, notices and temporary signs have been removed. They shall be maintained in an excellent condition throughout their use. A typical signboard layout is shown on the drawings”. B1209 PAYMENT (b) Rates to be inclusive Add the following to the first paragraph: “VAT shall be excluded from the rates.” Insert the following after “constructional plant” in lines 6 and 7 of the first paragraph: “(distinguishing between operational costs and hire costs)”. (c) The meanings of certain phrases in payment clauses (i) Procuring and furnishing ... (material) Add the following: “Payment for procuring and furnishing material from commercial sources shall include all transport costs, irrespective of distance hauled”. (e) Materials on the site Replace “clause 52” in the first line with “sub-clause 14.5” Add the following sub-clauses: “(g) Work in confined areas Except where provided for in the specification and the Pricing Schedule no extra payment shall be made nor shall any claim for additional payment be considered for construction in confined areas. The omission of standard payitems from the schedule of quantities shall be taken to be deliberate and any additional costs incurred shall be included in the bulk rate. (h) Split quantities Wherever in the Pricing Schedule allowance has been made to price items of work for which a product or material is uncertain and quantities split between pricing items, the employer reserves the right to choose whichever is the most appropriate or combination thereof, regardless of any adverse effect on the contractor’s costs and no claims for additional compensation shall be entertained. (k) Trade names Where materials are specified under trade names, tenders must be based on these materials. Alternative materials may be submitted as alternative tenders and the engineer may, after receipt of tenders, approve the use of equivalent materials.

C3-23

B1210 CERTIFICATE OF PRACTICAL COMPLETION OF THE WORKS Amend the heading of this clause to read: “TAKING-OVER CERTIFICATE” Replace the 1st paragraph with the following: “Notwithstanding that there might be natural or programmed sections of the works that will result in them being completed in their entirety before other sections, no consideration shall be given to the issuing of taking-over certificates for parts of the works. The use of any completed roadway or parts of the work, whether for unhindered use by the public or for accommodation of traffic while other parts are being constructed, shall not constitute use or occupation by the Employer. The notice to the engineer, ito clause 10.1 of the Conditions of Contract applying for a Taking-Over Certificate, shall include the contractor’s own list of what it considers to be the outstanding minor works that do not substantially affect the use of the Works. As justification that the issue of a Taking-Over Certificate is warranted the contractor shall take note that the following sections of the works are to be completed to the satisfaction of the engineer:” Add the following to sub-clause (e) before the semicolon: “(including road studs)” Add the following paragraphs after item (h): “In addition to the above itemised sections of the works and regardless of the degree of beneficial occupation by the Employer, the outstanding works contained in the lists produced by the contractor and the engineer shall be considered for taking-over only if the following criteria have been met: (i) The estimated cost to complete the listed outstanding work is less than 2% of the tendered value of work plus the cost of any variation or extra work orders, but excluding CPA and VAT. (ii) The written lists of outstanding items of work can be completed within 28 days of the lists having been issued. (iii) Any information in the contractor’s possession, which is required by the engineer and has been requested in writing, has been supplied. (iv) The Regional Manager of the Department of Mineral Resources (DMR) has issued written confirmation to the contractor that they are satisfied with the final shaping to all quarries, borrow pits, stockpile areas, and spoil sites used or intended to be used under this contract. In the event this written confirmation is not obtained from DMR within 60 days, acceptance by the Environmental Assessment Practitioner (EAP) will be sufficient for the issuing of the Taking-Over Certificate. If any of the listed criteria (i) through (iv) are not met at the date of the contractor’s notice of application, the engineer is to reject the application without providing any corresponding list of outstanding work. If an application is rejected, the contractor shall rectify what has been identified as deficient before submitting a new notice of application.”

B1213 VARIATION FROM SPECIFIED NOMINAL RATES OF APPLICATION OR NOMINAL MIX PROPORTIONS

Amend the last line of the second paragraph to read as follows:

“… materials, condition of the site and cement type (in order to comply with the durability requirements described in sub-clause B6404(h).”

C3-24

B1214 CONTRACTOR’S ACTIVITIES IN RESPECT OF PROPERTY OUTSIDE THE ROAD RESERVE AND OF SERVICES MOVED, DAMAGED OR ALTERED

Add the following to the last paragraph of subclause (d):

"These written statements shall be handed to the engineer before the final certificate will be issued. Failing to obtain these written statements from all landowners and authorities concerned, the Defects Notification Period will be extended including all conditions related to such an extension, until such time that all these statements are obtained. The obtaining of any such written statements will not relieve the contractor of the execution of any of his obligations to the satisfaction of the landowner or authority concerned, and to the approval of the engineer." Under sub-clause (e) replace the opening paragraph with:

“Should the contractor use land not provided by the employer for the purpose of his own establishment, engineer’s offices and laboratory, or storing of equipment or materials required for construction or disposal, it shall be subject to the following:” and add the following sub-sub-clauses:

“(vi) That lease agreements are concluded with the owner or owners of such land for the full period that such areas are required. The leases shall provide for possible extensions to match the duration of the contract. The lease agreements shall also provide for the contract being terminated by contractor’s default or liquidation and the resulting possibility for them to be taken over by a succeeding contractor. (vii) That copies of lease agreements shall be submitted to the engineer prior to signature by the signing parties, and copies lodged with the engineer after signing. Notwithstanding the engineer’s approval of the conditions of a lease the contractor shall be solely responsible for adhesion to the terms of the agreements. (viii) Adherence to the principles of the environmental management plan and legal obligations” Add the following subclause:

“(f) Cleaning of public roads

Where material is spilled on public roads during the haul of material, the road shall be cleaned immediately.”

B1215 EXTENSION OF TIME RESULTING FROM ABNORMAL RAINFALL

Change the existing heading of clause 1215 to read as follows:

“EXTENSION OF TIME RESULTING FROM INCLEMENT WEATHER”

and replace this clause with the following:

“Delays caused by inclement weather events may be considered as extension to the time for completion only if the engineer agrees that the event (and not the consequence of the event) occurred during the working hours of a working day (based on a twenty three (23) day working month) within the contract period and caused all progress on an item or items of work on the critical path of the contractor’s approved programme (including revisions thereof) brought to a halt. Each day, or portion of a day so agreed will accrue as ‘n’ days of delay over the duration of the contract. The summary of accrued agreed ‘n’ delays shall be recorded at each site meeting. In the case of the inclement weather event being rainfall, no limitation is placed on the quantity, severity or duration of the event as being the cause of delay except, if it is an exceptional climatic condition then it shall not be measured as a delay event under this clause, but shall be considered for delay under the general conditions of contract clause 8.4. Expressly excluded from the measurement of ‘n’ days are consequential delays, which are taken to mean delays to critical path activities attributable to the weather event but occurring after (i.e. outside of and distinctly separate from) the duration of the weather event itself.

C3-25

The contractor shall make provision in his approved programme (including revisions thereof) of work for expected N working days caused by inclement weather. This provision shall be shown as a terminal float on the approved programmes. Any extension to the time for completion caused by inclement weather delays will only apply once the agreed cumulative ‘n’ delays exceed N = ∑n days. On this contract N = 91 days Table B1215/1 below is provided for demonstration purposes only. It shows the average number of days on which rainfall events of > 10mm has occurred at Malmesbury weather station. This station has been chosen because its records span 10 years and is considered sufficiently close to the site to be representative of what the contractor could expect during the contract. The full weather station record is included in Part C4: Site Information. The contractor may apply this record to any claim for weather delays that fall outside the prescripts of this clause and within the terms of the general conditions of contract. Table B1215/1 also records the average ‘other’ inclement weather event days that the contractor could expect to encounter and cause delay. These have been derived from previous experience of wind and temperature influence on similar construction in the area of the site. ‘Other’ events could be extreme cold or heat, snow, wind or ice but are not limited to these. From table B1215/1 it will be noted that the sum of average rain and other delays measured over the contract duration of 42 months is 130 days yet the contractor is instructed to allow N = 91 days in his approved programme (including revisions thereof). The reduction indicates the extent of the employer’s share of the overall risk attaching to delays caused by inclement weather.

Table B1215/1

Average delays due to inclement weather

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total Average rain days

0 (0) 1 1 1 3 4 3 3 1 1 1 0 (0) 19(19)

Average other days

1 2 2 2 2 1 1 1 2 2 1 1 18

* The figures shown in brackets are the average days of rain expected in December/January but reduced to take account of the standard construction break over the Christmas/New Year period.

If approved extensions of time extend the completion date beyond the start of the Christmas shut-down as defined in the Appendix to Tender, the holiday period shall not be considered as working days. Any remaining extension of time shall be calculated from the first working day in January the following year.”

B1217 PROTECTION OF THE WORKS AND REQUIREMENTS TO BE MET BEFORE CONSTRUCTION OF NEW WORK ON TOP OF COMPLETED WORK IS COMMENCED

Add the following:

“(h) Prior to the start of any excavation in the existing pavements on any part of the works, the contractor shall submit to the engineer for approval a method statement for the execution of that part of the work. The contractor is responsible for the protection of the underlying pavement layers and the drying out and/or keeping dry of such excavations. The contractor's program shall make provision for the speedy backfilling of the excavations and the drainage thereof if inundation cannot be prevented. The contractor shall at his own cost be responsible for the repair of pavement layers, which have been damaged due to his own works or his neglect to submit his planning to the engineer for approval or to adhere to approved precautionary measures. (i) Concrete elements adjoining the road, which is designated for resurfacing, shall be covered with protective material prior to any spraying operations to prevent the concrete from being stained with bituminous binder. The protection of concrete elements shall be to the engineer's satisfaction and no additional payment will be applicable for taking the specified protection measures.”

C3-26

B1219 WATER

Add the following:

“Water for use on site other than municipal, shall be subject to the required permit from Department of Water Affairs (DWA). This shall include such extraction points as rivers, dams, streams, and boreholes. Use table B1219 below to determine the suitability of water for construction purposes.

Table B1219

Water classification for Construction: Testing

Water Quality Classification Code H0 H1 H2 H3 H4 H5 Property Unit Pure water

(AR) Clean water (Rain)

Treated water (Municipal)

Silty (muddy) water with low salt content

Highly mineralised chloride sulphate water (brackish)

Waste brack, sewage, marsh, sea, etc water

Method

PH* - 7.0 5.7 – 7.9 4.5 – 6.5 4.5 – 8.5 9.0 - SABS M113 SM 11 - 1990

Dissolved solids*

ppm 0 1000 1500 3000 - - SABS 213 SM213 - 1990

Total hardness*

- None None Temporary

Temporary

Permanent - SABS 215 SM 215 – 1971

Suspended matter

ppm 0 2000 2000 5000 - - SABS 1049 SM 1049 – 1990

Electrical conductivity

mS/m 0 200 200 500 - - SABS 1057 SM 1057 – 1982

Sulphates (SO4)

ppm 0 200 300 500 1000 - SABS 212 SM 212 – 1971

Chlorides (Cl) ppm 0 500 1000 3000 5000 - SABS 202 SM 202 – 1983

Alkali Carbonates (CO3) & Bicarbonates (HCO3)

ppm 0 500 1000 1000 2000 - SABS 241 – 1999

Sugar - Negative Negative Negative Negative Negative - SABS 833

Quality of water required

Untreated layer works

Investigate the effect on the quality of the material

Chemically treated layer works

Investigate the effect on the quality of the material

Concrete mass

Investigate the effect on the quality of the material

Concrete prestressed

References: 1. Concrete Technology – Dr S Fulton (1989) 2. Materials Manual (PAWC)

Slurry & emulsion

Soil/gravel tests

Chemical or control tests

C3-27

* A primary property. The quality of the water is that quality where all three of the primary properties are within the limits.

The tabulated single values are maximum value except in the case of the pH value for pure water, which must be 7.0

B1222 USE OF EXPLOSIVES

Add the following sub-clauses:

“(h) Definitions

(i) “Specified excavation or Payment line” means the excavation profile given on the drawings or determined by the engineer for the works, within which no unexcavated or loose material shall occur after the excavation is complete except as allowed within the specified tolerances. It is also the line to which payment for excavation will be made. (ii) “Pre-splitting” comprises drilling a line of closely spaced parallel holes of appropriate diameter, spaced not more than ten times the hole diameter or 600 mm, whichever is the smaller and charging the holes with an appropriate amount (decoupled if necessary) and type of explosive to shear the rock, forming a surface along the line of drill holes. Either all the holes in a presplit line shall be drilled, charged and detonated simultaneously prior to drilling the production holes for the excavation adjacent to the presplit line, or pre-splitting shall be accomplished by delaying detonation in the production holes to allow the presplit holes to fire first. The first line of production holes next to the presplit face shall be lightly charged to ensure that the presplit face is not damaged when the charges in the production holes are detonated. (iii) “Smooth blasting” comprises the drilling of a number of closely spaced parallel holes along the required excavation surface, with a suitable burden/spacing ratio, loading all the holes lightly with a uniform continuous charge of small diameter explosive and detonating all these charges simultaneously, after the detonation of the main production blast. (iv) “Line Drilling” comprises drilling a line of holes of appropriate diameter spaced not more than twice the hole diameter to form a surface of weakness along which the rock will break. Blasting is not permitted in the line drilled holes, and the first line of production holes next to the line drilled holes shall be lightly charged to avoid damage to the line drilled break surface. (v) “Cushion Blasting” comprises the separate removal of a protective zone of rock which has been purposely left within the specified limits of excavation for flat areas and shallow slopes. Drilling for cushion blasting shall consist of a regular pattern of holes at appropriate spacings and angles and to accurate depths. The holes shall be lightly charged and detonated in relays to lift the rock progressively to form the final excavated surface without shattering the surrounding rock. (vi) “Overbreak” means any excavation area which extends beyond the payment line, irrespective of the reason for such excavation. (i) General

A copy of all certificates issued to workmen to permit them to undertake blasting, and to the contractor to cover the purchasing, storage and transport of explosives shall be handed to the engineer before any blasting work is undertaken. The contractor shall submit to the engineer at least 28 days before the commencement of any excavation work, full details of his proposed methods and sequence of excavation and programme for the use of explosives. Within 2 weeks of receipt of the proposals, the engineer shall indicate acceptance in part or in whole, in writing, to the contractor. The engineer reserves the right to reject the proposals if, in his opinion, undesirable damage to permanent rock surfaces or existing structures will result from carrying out the blasting as proposed. If acceptance is withheld, new proposals in whole or in part shall be submitted.

C3-28

No drilling or blasting shall be carried out in areas for which the proposals have not been accepted by the engineer, and any changes to the accepted methods shall be subject to the engineer’s approval. The work shall be programmed so as to minimise blasting adjacent to previously constructed sections of the works. Where blasting is necessary every precaution including the use of blast mats, timber boarding or other means shall be exercised to protect the Works and persons, animals and property in the vicinity of the site. The contractor shall accept responsibility for all injury or damage occasioned by any blasting operations and shall make good such damage without any additional payment. The contractor shall, in particular, note the requirement that he must limit to the maximum extent practicable the spillage of material from surface excavations, whether by blasting or other means. To this end the contractor shall take all necessary precautions including, if necessary, covering the rock prior to blasting with sufficient loose material to prevent the blasted material being thrown. If, however, during the course of excavation on a hillside, the engineer is of the opinion that insufficient precautions are being taken to minimise the spillage of material, he may instruct the contractor to adopt further measures to reduce the spillage. No separate payment will be made for any such measures required. Each separate blast shall be designed in accordance with modern blasting practice to break out the rock with the minimum explosive force. Full details of each blast shall be submitted to the engineer for scrutiny not later than 24 hours prior to the commencement of drilling for that blast, unless such blast is unchanged from the previous one. The details shall include the location, depth and area of blast holes, the type, strength, amount, column load and distribution of explosives to be used per hole, per delay and per blast, the sequence and pattern of delays, the maximum expected level of shockwaves on adjacent structures, and the description and purpose of any special methods to be adopted by the contractor. The consent by the engineer to any blasting proposals shall not relieve the contractor of his responsibilities under the contract and the law. Should the contractor excavate to dimensions in excess of those specified or instructed by the engineer, whether to remove damaged material or for reasons of safety or for his own convenience, he shall at his own expense and when required by the engineer, fill in the excess excavation with concrete or sprayed concrete of approved quality or with other material approved by the engineer, or carry out additional trimming to the satisfaction of the engineer. The contractor shall provide the engineer each day with a copy of the record for the previous day’s excavations. Where applicable the following data shall be recorded for each working area together with other such data as the engineer may request:

location of the excavation and position within the excavation, drilling pattern, type and amount of explosive used, including blasting pattern and delays used, details of rock support, surface area of classification of labour and plant, number and classification of labour and plant, unusual occurrences, rock falls, unstable or soft ground and inflows of water, progress, delays and reasons for delays, name and permit number of blaster, date, and distance of blasts to structures and existing services.

(j) Quality of excavated surface

Unless otherwise instructed by the engineer all blasting work shall be carried out using controlled blasting techniques to minimise any damage to the final profile. Use shall be made of approved special explosives and/or blasting techniques which will minimise blasting induced fractures, or disturbance, on the rock faces outside the excavation line so preserving

C3-29

the rock in the soundest possible condition. No separate payment will be made for cushion blasting. The cost of using cushion blasting techniques shall be included in the rates for excavation. The surface after blasting shall exhibit a regular fracture plane between barrels without back break and with half barrels visible over the major portion of the surface. The surface shall be scaled down of all loose and hollow sounding rock to leave a solid, intact surface. Light charges shall be used for enlarging or correcting the excavated profile and also for excavating trenches. If in the opinion of the engineer, the methods of blasting are at any time causing excessive or undesirable disturbance of the rock mass surrounding the excavated space, he may order the contractor to change his methods of blasting and/or carry out blasting trials until the desired results are achieved. No additional payment shall be made for any change or further trials ordered by the engineer or any delays resulting there from. The spacing of holes and explosive charges shall be adjusted so that a minimum of oversize material is produced (a maximum particle size of 600 mm). The engineer shall have the right to order the contractor to adjust his blasting pattern and/or carry out secondary blasting at his own cost, should he be of the opinion that the contractor is not taking sufficient care too produce rock of the required size. (k) Monitoring of blasts

The contractor shall supply and operate an approved tri-axial particle velocity meter equipped with a permanent paper trace output, which shall be used as and where directed by the engineer to monitor blasting work. The paper trace output records shall show the time and location of each blast, the type and amount of explosive used, together with any other relevant data. (l) Notification of blasts

Prior to any blasting, 7 days’ notice is to be given to the engineer, relevant authorities and the media. The contractor shall further notify the engineer of the intention to blast at least 24 hours before that operation is carried out. The notification shall show the location of and the intended time of each blast and the name of the licensed blaster and shift foreman responsible. The contractor shall distribute written notification to all organisations on site, and relevant authorities, 24 hours prior to undertaking blasting. Any delay or postponement of any blasts shall be notified to all organisations immediately. The firing of explosives shall be restricted as detailed in Item B1222(r) of this specification. (m) Blasting near structures

The amount of explosives that may be detonated shall not result in a ground vibration with a peak particle velocity in excess of 25 mm/sec at the nearest point of any part of permanent works. Where circumstances dictate, such as when blasting near to partially cured concrete, the peak particle velocity permitted may be reduced by the engineer. Blasting shall not be carried out within 10 m of any works, unless otherwise agreed to in writing by the engineer. (n) Controlled blasting

Controlled blasting methods shall comprise pre-splitting, smooth blasting, line drilling or cushion blasting techniques. All charges shall be accurately made up and inserted into the holes at the correct spacing, and all holes shall be correctly stemmed and connected in the correct sequence, with detonators being correctly delayed. If at any time the methods of drilling and blasting do not produce the desired results of a uniform profile and shear face without overbreak, all within the tolerances specified, the contractor shall be required to undertake tests as until a technique is arrived at that will produce the desired results.

C3-30

Controlled blasting shall be used in the widening of the cuttings or otherwise where called for by the engineer. (o) Drilling

In all controlled blasting, drilling accuracy of perimeter holes is of prime importance and the contractor shall take particular care and make use of sight lines and guide rails in surface work to control the alignment and depth of blast holes. Holes which are likely to protrude more than 100 mm beyond the excavation profile, shall not be charged up, but shall be redrilled. The blast pattern shall be accurately set out and holes shall be collared within 50 mm of the required position. Holes which are overdrilled shall be fully stemmed to the required depth before charging up takes place. The length of perimeter holes for any individual lift shall not exceed 10m or any lesser depth detailed on the drawings. All perimeter holes for surface blasting shall be drilled to a depth of 1 m below the bottom of any production holes adjacent to the perimeter plane. (p) Use of explosives

Both cartridge and bulk explosives may be used where appropriate. In controlled blasting the type, size, decoupling and charge concentration of perimeter and bulk charges shall be within established parameters unless otherwise proven acceptable by site trials. The bottom charge of a pre-split hole shall not be larger than the line charges unless otherwise directed. The top charge of the pre-splitting hole shall be placed far enough below the collar to avoid overbreaking the final profile. Adequate stemming shall be used to avoid blow-outs. (q) Checking and correcting the excavated profile

The excavated profile shall be checked for line, level and underbreak using methods approved by the engineer. No projections of rock shall protrude within the payment line, except as allowed within the specified tolerances. The contractor shall submit his proposals for removing any underbreak to the engineer for his consent prior to carrying out any such work of removal. Any work executed or delays, which are due to the contractor having to re-excavate underbreak and then re-install support shall be carried out without additional payment, and no extension of time will be allowed for this work. (r) Accommodation and protection of existing services and infrastructure

In the event of the laid-down vibration parameters as detailed in (m) above being exceeded or in the event of a valid recording not being made available as stipulated above, the engineer reserves the right to ascertain by whatever means, whether damage was caused by the blast to the service or structure. All costs incurred in establishing such possible resultant damage and the repair thereof will be to the contractor’s account. Cover blasting shall be used in the vicinity of overhead services (e.g. telephone and power lines) where overhead services may be damaged or affected by blasting activities. The cover blasting shall be such that it sufficiently protects overhead services to prevent any damage to such services.”

C3-31

B1224 THE HANDING OVER OF THE ROAD RESERVE

Amend the heading to read: “THE HANDING-OVER OF THE SITE”

In the first and last line of the paragraph replace “road reserve” with “site”.

Add the following paragraph:

“The site of the works shall consist of the entire road reserve inclusive of road junctions and farm accesses required for construction of the works as defined by the limits of construction shown on the drawings. It shall also include any additional lengths of road required for the placement of advanced warning road signs and/or traffic accommodation measures beyond the limits of construction as shown on the drawings. Where consistent with the context, the site shall also include areas outside of the road reserve required for construction camps, borrow areas, spoil areas and stockpile areas. The exact extent of the site and its boundaries will be verified once the site is handed over to the contractor. Upon being given access to the site the contractor shall immediately assume responsibility for the entire site as defined in the specifications and verified. Personnel and equipment shall not enter property beyond the boundary of the site irrespective of whether or not the boundary is fenced. Prior to the commencement of work the contractor and the engineer shall jointly carry out an inspection of the site and during such an inspection, notes shall be made of all damaged fences, guardrails, signs and any other notable problems or features that exist at the time of gaining access or hand-over. The following matters should be agreed at the time of handing-over:

(i) The limits, lengths, widths and areas of construction. (ii) The condition of fences, guardrails, signs and any other features that exist at the time of site

handing-over (iii) The location of kilometre and 200 m markers and reference beacons (iv) The scope of remedial / repair or preparatory work measures (patching, crack sealing, etc.)

to be executed by the contractor (v) The location of stockpile areas and the responsibilities of the contractor with regard to the

road reserve area and the stockpile sites (fencing, height of stockpile, rehabilitation, etc.). (vi) The method of accommodation of public traffic with regard to safety, sight distances,

interference with existing road signs and road markings both within the work area and providing advance warning before the work area.

(vii) The method of construction and supervisory control measures (viii) The protection of existing bridge joints, concrete kerbs/channels, rumble strips and road

studs where necessary.”

B1229 SABS CEMENT SPECIFICATIONS

Delete this clause.

Add the following clauses:

“B1230 MATERIALS

(a) General

The contractor, when using materials that are required to comply with any standard specification, shall, if so ordered, furnish the engineer with certificates showing that the materials do comply with this specification. Where so specified, materials shall bear the official mark of the appropriate authority. Samples ordered or specified shall be delivered to the engineer's office on the site free of charge. Where materials are specified under trade names tenders must be based on these materials. Alternative materials may be submitted as alternative tenders and the engineer may, after receipt of tenders, approve the use of equivalent materials. The tender must be clearly marked as an alternative tender, failing which the tender may be rejected.

C3-32

Unless otherwise specified, all proprietary materials shall be used and placed in strict accordance with the relevant manufacturer's current published instructions. Agrément certified products shall be used and placed in accordance with its Agrément certification criteria. Unless anything to the contrary is specified, all manufactured articles or materials supplied by the contractor for the permanent works shall be unused. Any materials excavated or present on the site or within the road reserve, or in borrow areas shall not become the property of the contractor, but will be at his disposal only in so far as they are approved for use on the contract, unless otherwise indicated in the project specification. Existing structures on the site shall remain the property of the employer and except as and to the extent required elsewhere in the contract, shall not be interfered with by the contractor in any way. Materials to be included in the works shall not be damaged in any way and, should they be damaged on delivery or by the contractor during handling, transportation, storage, installation or testing they shall be replaced by the contractor at his own expense. All places where materials are being manufactured or obtained for use in the works, and all the processes in their entirety connected therewith shall be open to inspection by the engineer (or other persons authorised by the engineer) at all reasonable times, and the engineer shall be at liberty to suspend any portion of work which is not being executed in conformity with these specifications. The contractor shall satisfy himself that any quarry selected for use provides the necessary mined material in accordance with the specification. (b) Banned materials

No tar fluid products shall be used in the construction works.

B1231 MIX DESIGNS

Before commencing with certain construction activities, the contractor shall, except where specified otherwise in the relevant construction sections in the scope of works, apply the following procedures with regards to mix designs:

Taking and submitting samples of the relevant materials. Undertake the required mix design(s) or allow the engineer to undertake them. Produce, where required, laboratory, production/plant and/or trial mix(es). Undertake the required adjustments to the mix design(s) and reproduce required

laboratory, production/plant and/or trial mix(es). Complete trial section(s) where required. Await the engineer’s approval of the mix design(s) and trial section(s).”

B1232 ROUTINE MAINTENANCE

“The road reserve within the defined limits of the contract falls within the limits of another contract that has already been let to a routine maintenance contractor who is obliged to conduct regular maintenance on the route on which this contract is sited. The contractor’s responsibility for maintenance shall be restricted to the surfaced road widths within the limits of this contract, including the surfaced road widths of interchange ramps and overpasses. Any potholes or other failures which occur in the road surface shall be repaired by the contractor within 24 hours after first being noted, The contractor shall recover his costs for the execution of maintenance works through the payment items provided under section 1500 The contact details of the current routine road maintenance contractor are as follows: Route Manager: Gerome Buys (Knight Piesold) Tel: 082 328 9422 Contractor: Ashley Williams (Vukuzenzele / Kew JV) Tel: 072 273 0562 The contractor shall take over the maintenance responsibility on the date of handover but may liaise with the routine maintenance contractor by arranging a transition period immediately after the hand-

C3-33

over of the site to allow sufficient time to muster his resources required for routine maintenance of the road. However, the transition period may not extend beyond the contractual starting time defined in sub-clause 8.1 of the FIDIC Conditions of Contract and C1.2.2 Contract Data.

B1233 MEASUREMENT AND PAYMENT

Item Unit

B12.01 Identification of location of existing services within the site

(a) Identification and/or confirmation of services by the use of hand

excavation less than 1.5 m deep................................................................. cubic metres (m3)

(b) Identification and/or confirmation of services by the use of hand excavation more than 1.5 m deep ............................................................... cubic metres (m

3)

(c) Providing the engineer a detailed set of services drawings and

services schedule after the investigation ..................................................................lump sum The contractor is to complete hand excavations of known and previously unknown services to confirm the depth and type of services in consultation with the various service authorities. The depth of services at all manholes and where the service is exposed is also to be surveyed in order to confirm and/or provide depths along each service. The exact location of underground services may be determined on site by careful hand excavation using spades only, which will be paid for under items B12.01(a) and (b). No picks or crowbars are to be used. Under payment item B12.01(c) the contractor is to provide the engineer with an updated set of drawings and detailed services schedule at the completion of the entire exercise. This is to indicate the depth of the existing services and service type, including the pipe/duct type and size, at all locations relevant to the planned construction works. The drawings are to clearly indicate the various types of the utility services in colour, as follows:

Sewage - YELLOW

Stormwater - WHITE

Telecommunications - GREEN

Electrical HT & LT - RED

Water (potable & fire) - BLUE

Gas/Diesel - ORANGE

Unknown – BLACK

Furthermore, the drawing must also clearly denote the following:

where hand-dug excavations were completed as part of the investigation, and the depth of these investigations

services manholes including cover level, invert level / top of pipe level, service direction, service type and size

Final payment of items B12.01(a), B12.01(b) and B12.01(c) will be made once the full set of surveyed drawings and services schedule as described above is approved by the engineer. Until these details are approved, the engineer may approve interim payments on the specific items based on approximately 70 percent of the work completed.

Item Unit

B12.02 Protection, removal, realignment and replacement of services

(a) Existing Telkom underground ducts and cables

C3-34

(i) Hand excavation less than 1.5m deep for the detection of existing positions and depths of Telkom underground infrastructure ......................... cubic metre (m3)

(ii) The protection of Telkom underground fibre-optic ducts and cables by

means of reinforced concrete as shown on typical drawing J01802-01-10-507.......................................................................................................... cubic metre (m3)

(iii) Trenching less than 1.5m deep to fully expose and remove existing

Telkom underground services ...................................................................... cubic metre (m3) (iv) Trenching greater than 1.5m deep to fully expose and remove existing

Telkom underground services ...................................................................... cubic metre (m3) (v) Telkom payment for provision of materials and relocation of optical

fibre lines ...................................................................................................... provisional sum (vi) Handling costs and profit associated with item B12.02(a)(v) above ................. percentage (%) Item B12.02(a)(i) allows for the confirmation or detection of the existing number, position and depths of the Telkom underground infrastructure as agreed beforehand with the engineer. This includes the hand excavation of holes along the length of the underground services sufficient to determine the location, depth and number of Telkom underground cables or ducts. These holes are to be done regularly enough along the length of the Telkom underground infrastructure being located to clearly define the location of the cables, and all excavation is to be done carefully by spade without the use of picks or crowbars. Thereafter the engineer is to be provided with a set of drawings indicating at each hole position an approximate cross-section of the duct / cable layout showing the number of ducts and /or cables and their positions in relation to one another and in relation to the ground surface. Payment for this item is to be per cubic metre of hand-excavated hole dug, and will not include for investigations done under item B12.01. Item B12.02(a)(ii) allows for the protection of the existing Telkom underground services infrastructure by means of cast in-situ reinforced 30MPa concrete 150 mm thick slab cast over the position of the ducts/cables. This will be done in the locations as confirmed by the engineer and in accordance with the drawing provided. This rate includes for the trenching for the unreinforced concrete 300 mm wide footings while carefully not disturbing the existing cables, the casting of the unreinforced footings up to a level of 100 mm above the top of the top duct, and the preparation and construction of the reinforced deck slab over the ducts and the cast footings. The payment item is calculated in terms of the quantity of concrete used and will include all sundry items including the reinforcement specified. Item B12.02(a)(iii) and (iv) allows for the trenching required to fully expose existing Telkom underground services and remove them, as approved by the engineer and Telkom official. Trenches are to be wide enough to access the cables and ducts, and to remove them. The rate must include for the disposal of any of the Telkom infrastructure removed. The trenching shall be calculated from the bottom level of any earthworks cut or topsoil removal operation to be conducted immediately above the affected cables. Item B12.02(a)(v) is for Telkom to be appointed for the supply of some of the materials required, for supervision and assistance in temporary relocation of their cables where required, and for the installation of the new optical fibre lines. The contractor will be responsible for the following works:

Marking the position of the new ducts. Liaison with adjacent landowners where necessary. Supervision of all the works in liaison with Telkom and with the other services

authorities. Accommodation of traffic, including the provision and erection of temporary road

signs. The trenching and excavation work required for the new optical fibre ducts. The supervision and coordination of the construction of the new ducts through

Transnet’s railway reserve in accordance with Transnet’s requirements.,

C3-35

The laying and jointing of all the optical fibre ducts with duct materials as supplied by Telkom.

The cleaning and checking of the layed ducts. The construction of the required manholes complete.

Telkom will be responsible for the following works:

The supply of the following: o Manhole frame and cover, security type, roadway type, round (drawing SME 6) o Cable Hangers and Brackets (drawing HSM 1 & HTM 1) o Self-locating bolts for brackets o Duct bends for SDC’s o All ducts, couplings & duct plugs 110mm o All ducts 40mm and 32mm HDPE o Marking tape (yellow “danger”)

The approval of the new ducts and manholes. The trenchless technology for the construction of the new ducts under the railway line. The laying of the new optical fibre cables and connecting the new lines. The cutting off of the existing lines.

The provisional sum items shall be paid in accordance with the provisions of the Conditions of Contract. The tendered percentage is a percentage of the amount actually spent under the provisional cost item, which shall include full compensation for the profit in connection with providing the specified service. The provisional cost sum and handling fees for these items are provided to cover work to be done by a nominated subcontractor still to be appointed and the contractor, as per clause B1234. (b) Electrical Services (i) Relocation of existing electrical services ........................................................ Provisional sum (ii) Handling costs and profit associated with item B12.02(b)(i) above ................. Percentage (%) (c) Other Services (i) Relocation of existing water pipeline .............................................................. Provisional sum (ii) Handling costs and profit associated with item B12.02(c)(i) above ................. Percentage (%) The provisional sum items shall be paid in accordance with the provisions of the General Conditions of Contract Subclause 13.5 as amended by Particular Conditions of Contract. The tendered percentage is a percentage of the amount actually spent under the provisional cost item, which shall include full compensation for the profit in connection with providing the specified service. The provisional cost sum and handling fees for these items are provided to cover work to be done by a nominated subcontractor still to be appointed, as per clause B1234.

Item Unit

B12.03 Botanical Restoration Programme (i) Botanical Restoration Programme………………………………(ii)

……………….Provisional sum Handling costs and profit associated with item B12.03(i) above ................. Percentage (%)

This item is for the costs to develop and adhere to a Botanical Restoration Programme, as specified in the Environmental Authorisation. It includes for the employment of a botanist to draw up a botanical restoration plan and monitor the adherence to the plan, apply for necessary permits and liaise with the Environmental Monitoring Committee. It also includes for the removal of alien vegetation, and relocation and restoration of identified vegetation as specified in the Botanical Restoration Programme. This covers items 23, 24, 29 and 37 of the Environmental Authorisation and items 3.20.2 and 3.21 of the Environmental Management Programme for this project, all other aspects of the Environmental Authorisation and Environmental Management Programme are covered by payment item B13.01(f). The tendered percentage is a percentage of the amount actually spent under the

C3-36

provisional cost item, which shall include full compensation for the profit in connection with providing the specified service.” Add the following clauses:

“B1234 WORK TO BE DONE BY NOMINATED SUBCONTRACTORS

(a) Electrical Works

Part of the electrical works will be carried out by a nominated subcontractor still to be appointed, while some other works will have to be done by the main contractor. The nominated subcontractor will be responsible for the following works:

Relocation of existing electrical services where required. All cable work included excavation, backfilling and connections to the streetlights, mini

substations and other as required, but excluding sleeves. The supply, delivery and installation of mini substations complete. The supply, delivery, installation and commissioning of lighting poles and masts

excluding the foundation bases for sections where the F-Shape barriers are provided. Removal of existing light fittings and poles as well as existing overhead line poles, and

delivery to stores of the relevant municipality. Termination of existing overhead lines and delivery of redundant material to stores of

the relevant municipality. The main contractor will be responsible for:

Installation of sleeves by excavating and backfilling and proofing. Installation of sleeves by drilling underneath existing roads and proofing. Provision draw wires in all sleeves, Complete construction of concrete bases for the lighting poles and masts for F-Shape

barrier sections. Construction of manholes for the electrical cables where required. Accommodation of traffic, including the provision and erection of temporary road

signs. The nominated subcontractor will be paid according to rates in his subcontract, for which a provisional sum has been provided in the Pricing Schedule. The main contractor will be paid an overhead charge on the cost of electrical works completed by the nominated subcontractor. Works relating to the electrical requirements and constructed by the main contractor, will be paid in other items elsewhere in the Pricing Schedule. (b) Water pipeline works

Part of the relocation of the water pipeline under the N7 at the existing Kalbaskraal intersection will be carried out by a nominated subcontractor still to be appointed, while some other works will have to be done by the main contractor. The nominated subcontractor will be responsible for the following works:

Relocation of existing water pipeline along the new alignment of the Kalbaskraal Road.

All work including excavation, backfilling and accommodating all other existing infrastructure.

The supply, delivery, installation and commissioning of a new pipeline section. Termination and removal of existing pipelines and delivery of redundant material to

stores of the Swartland Municipality.

C3-37

The main contractor will be responsible for:

Accommodation of traffic, including the provision and erection of temporary road signs.

Management of the subcontractor The nominated subcontractor will be paid according to rates in his subcontract, for which a provisional sum has been provided in the Pricing Schedule. The main contractor will be paid an overhead charge on the cost of the works completed by the nominated subcontractor. Works relating to the other requirements and constructed by the main contractor, will be paid in other items elsewhere in the Pricing Schedule.

B1235 OWNERSHIP OF REDUNDANT ROAD SIDE FURNITURE AND OTHER MATERIALS

Ownership of all redundant road side furniture and other materials will become the property of the contractor unless otherwise specified by the engineer.

B1236 PENALTIES FOR OVERLOADING OF CONSTRUCTION VEHICLES

The contractor shall ensure that trucks used to haul construction materials are not overloaded and the legal axle loads are not exceeded. Before any construction materials can be transported, the contractor must provide the engineer with the certified carrying capacity of each truck intended for the purpose of transporting the construction materials. The contractor shall provide the engineer with a weighbridge ticket before discharging/off-loading the materials. Any truck that is overloaded shall not be allowed to discharge/off-load its load and shall return to the depot/batching plant for adjustment of the load. In addition a non-compliance cost shall be applied for the overload. For the purposes of the calculation, the so called 5% grace shall not be used. The following example is provided: Tare Weight of vehicle certified by a calibrated weighbridge = 6 tons Maximum carrying capacity certified by a calibrated weighbridge = 8 tons Gross vehicle mass = 14 tons Actual Load (Weighbridge ticket) = 14.6 tons Overload factor = 0.6 tons Contractors rate tendered under applicable payment item = R350/unit Non-compliance cost = 2 x R350/unit x 0.6 x distance hauled(km)

= R 420.00 x distance hauled (km) Non-compliance cost payments will be deducted from the front page of interim payment certificates.”

B1237 BOTANICAL RESTORATION PROGRAMME

As specified in items 23, 24, 29 and 37 of the Environmental Authorisation for this project, a Botanical Restoration Programme including the services of a botanist is required. The botanist is to be employed and to conduct a field survey of the site before the commencement of construction activities. The Botanical Restoration Programme is to be developed by the botanist and be approved and implemented to the satisfaction of the Environmental Monitoring Committee.”

C3-38

SECTION B1300: CONTRACTOR'S ESTABLISHMENT ON SITE AND GENERAL OBLIGATIONS

B1302 GENERAL REQUIREMENTS

(a) Camps, constructional plant and testing facilities

Insert the following after the first paragraph:

In the event that SANRAL-owned land will be made available for the use of the contractor for his construction camps, offices, stores, workshops and/or testing facilities, the use of such land will not be treated as a lease but will form part of the contract. In this regard the contractor shall complete the prescribed agreement and comply with all the conditions thereof as if it is part of the contract. The employer’s appointed service provider who administers and manages SANRAL owned land will facilitate the process and the contractor shall liaise and co-operate with the service provider in this regard. The availability of land will be indicated in Part C4: site information.. (c) Legal and contractual requirements and responsibilities to the public

Add the following:

“Legislation imposes mutual obligations on the employer and contractor in the performance of their duties to society and to the built and natural environment. To assist the contractor in understanding and assessing his obligations, and thus to make allowances for the cost of compliance with this legislation, the following additional specifications are included in the project specifications. Section C of the Scope of Works contains the Environmental Management Plan (EMPl) and Environmental Management Programme (EMPr) for this project. Its provisions regulate the contractor’s construction methods to ensure responsible conduct and treatment of the environment relevant to the project. Payment subitem 13.01(f) makes allowance for the contractor to price for environmental compliance duties as well as the duties of the designated/dedicated environmental officer (DEO) and a suitably qualified vegetation restoration ecologist, as prescribed in this section. Section D of the Scope of Works contains provisions that regulate the contractor’s construction methods for compliance with Government’s initiatives towards black economic empowerment. It also contains information on criteria used in the procurement process. No separate payment mechanism has been made available for the contractor to allow for his compliance with relevant black economic empowerment legislation. The contractor shall include such costs in the existing payment items under section B1303: Payment. However, non-compliance with the provisions of this section may lead to the imposition of non-compliant cost. Section E of the Scope of Works contains the specifications that regulate the contractor’s construction methods so far as to ensure health and safety of his employees and of the public. New payitem has been made available under this section to allow the contractor to make separate provision for the cost of health and safety measures during the construction process.” Add the following clauses:

“(d) Payment and monthly reporting

When submitting any information required and interim certificates for payment, the Contractor shall use the Employer’s standard forms and formats. No payment can be made before the Contractor is registered as a vendor on the Employer’s system. The Contractor shall submit payment certificates for all work rendered in the Employer’s financial year within that specific year. The Contractor shall submit and update on a monthly basis all the appendices to the site meeting minutes and a cash flow forecast for the works. The Contractor shall complete monthly reports regarding training, empowerment, capacity building, small contractor development, labour and staff returns and any such aspects on the Employer’s

C3-39

Integrated Transportation Information System (ITIS) or any other format as required by the Employer. This information shall also be reported on monthly for all sub-contractors employed. ITIS is an integrated approach to the sharing and inter-relating of technical performance information for the Employer, and relies on the Contractor following procedures to populate the system with data. ITIS currently consist of the following platforms applicable to this contract:

ITIS Web – Web enabled portal providing online access to various functions, workflows and reports.

ITIS Desktop – Offline data capture tool enabling the capture of information offline, validation and then synchronisation of data with ITIS database.

The Employer then has several ITIS modules running on any of the above ITIS platforms which affect the Contractor, who will need to use some of these modules to provide the required information. The current module applicable to this contract is the Project Information Module – employment and training data. The above information shall form part of supporting documentation required for making interim payments in terms of the General Conditions of Contract. Allowance has been made for these requirements in the Pricing Schedule under pay item B13.01(g) Monthly Reporting. Failure to comply may result in payments being withheld. (e) Security

The contractor shall carefully assess the security measures of whatever nature that may be required at the location of the site offices and the various sites of the works. No direct payment for security measures shall be made and the contractor shall make adequate provision in his tendered rates for all measures, including insurances, deemed necessary by him to safeguard his staff, his plant, materials and equipment, the offices complete with furniture, equipment and personal belongings, and to prevent disruption of the works by criminals. No claims in this regard will be entertained. The contractor shall provide adequate security and strict control of access to the campsite on a 24-hour basis including weekends and public holidays. The campsite area shall be adequately fenced with security fencing and security lights placed at strategic points. Notices to indicate that unauthorised persons may not enter the campsite area shall be erected at prominent locations as agreed with the engineer. The positioning of the camp site will be subject to the approval of the engineer and it should preferably be located within an existing secured complex. The contractor shall allow for all costs in connection with the provision of adequate security in his tendered rates for establishment on site.”

B1303 PAYMENT

Item Unit

B13.01 The contractor's general obligations

Add the following pay subitems:

“(d) Health and safety obligation ....................................................................................... month” (e) Provision of a 16 seater mini-bus .................................................................................... day (f) Environmental obligation ............................................................................................ month (g) Capturing data and maintaining ITIS database ............................................................ month Add the following sub-sub-clauses defining ‘the contractor’s general obligations’:

“(iv) Complying with the requirements and conditions of the additional specifications relating to the Government’s Broad Based Black Economic Empowerment

C3-40

(v) The provision of a 16 seater mini-bus for inspecting the works during monthly site meetings, which is generally one day per month. This vehicle shall be in a neat and roadworthy condition and the contractor will be responsible for the insurance of such a vehicle.” Delete the third paragraph commencing “Should the final value of the work”. Replace “clause 49” in the 4th, 8th and 10th paragraphs with “sub-clauses 13.7 and 13.8”. In the 11th paragraph commencing with “The tendered rate per month for subitem 13.01(c)………….”, insert as a new 2nd sentence: “All costs of construction plant which are mainly a function of time, i.e. hire costs per month or minimum charges per hour or day shall be deemed to be a part of the Contractor’s general obligations which are mainly a function of construction time”.

In the 11th paragraph, apply the following amendment: Delete “received the letter of acceptance in terms of clause 12” and replace with “date of commencement in terms of clause 8.1”.

In the last line, change “clause 45” to read “clause 8.4”. Add the following at the end of the second last paragraph of the payment clause: “... Such limitations to payments shall occur whenever the contractor falls behind by more than 3 month(s) on his initial approved programme, in which case the application of this payment item shall be the same as for 13.01(b) (i.e. the total price offered for 13.01(c) is treated as a lump sum). Normal application continues once the contractor’s progress has returned to within the time set for the limitation.” Add the following paragraphs:

“Should the combined total tendered for subitems (a), (b), and (c) exceed 20% of the tender sum (excluding CPA, contingencies and VAT), the tenderer shall state his reasons in writing for tendering in this manner. The tenderer's attention is drawn to Form B1: Contractor’s Establishment on Site, (bound in this Volume), to be completed by the tenderer. If the tenderer should require additional compensation for his obligations under section 1300 (over and above the total tendered for item B13.01) by including such additional compensation in the tendered rates and/or lump sum of items in the Pricing Schedule, these items and the value of such additional compensation shall also be indicated in writing in a letter attached to Form B1. Payment for the rate per month for sub items B13.01(d), (f) and (g) shall include full compensation for all the contractor’s obligations relevant to the health and safety legislation and specifications, environmental compliance and monthly reporting. Payment for subitem 13.01(f) shall include full compensation for all costs resulting from complying with all the provisions contained in the Construction Environmental Management Plan (EMP) and Environmental Management Programme (EMPr) including but not limited to all costs resulting from: the recruitment and employment of a Designated Environmental Officer (DEO); the control and management of the onsite hands-on and in-house training; for recruiting a suitably qualified horticulturist/landscape architect and/or botanist to compile and monitor the implementation of a rehabilitation plan; and the preparation and submission of method statements for approval. The implementation of the vegetation rehabilitation plan will be by an approved landscape specialist and is paid for elsewhere. The tendered rates for subitems 13.01(d), (f) and (g) shall apply in the same manner as pay subitem B13.01(c) but shall not form part of the calculation of the restrictions imposed by Condition of Tender F.3.8(c) and Form to tender B1: Contractor’s Establishment on Site.

C3-41

The tendered percentage under item (e) shall be the day, or part thereof, for which the vehicle was hired and used for its intended purpose. The rate tendered shall include full compensation for the hire of the vehicle including cost of insurances, fuel, wear and tear and any other incidentals. The rate tendered for subitem B13.01(g) shall include full compensation for registering on the Employer’s project information module, compiling and capturing, monthly for the full duration of the Contract, the required information regarding training, empowerment, capacity building, targeted enterprise development, labour and staff returns. It shall further include for all personnel and other costs, disbursements, overheads and profit. A contractor who tenders zero for this payitem shall not be relieved of his statutory obligations. A nil rate offered shall be deemed not as an omission but as deliberate notice that costs have been included in the tendered rates for individual items of work or in the other preliminary and general pay items.” The following paragraph relates to the treatment of all payitems for which the unit of measurement is the month and shall become applicable only for use in calculations of approved extensions of time in terms of the FIDIC Conditions of Contract: “All payitems for which the unit of measurement is "month" are deemed to be based on 23 working days per month and shall become applicable only for use in calculations of approved extensions of time in terms of the Conditions of Contract.” Add the following payitems: “Item Unit B13.02 Provisional sums (a) Provision for survey assistance (b) (c) (d) (e) (f)

.................................................................... provisional sum Handling costs and profit in respect to subitem B13.02(a).............................. percentage (%) Transnet occupation costs............................................................................. provisional sum Handling costs and profit in respect to subitem B13.02(c) .............................. percentage (%) Transportation and storage of borehole core boxes ....................................... provisional sum Handling costs and profit in respect to subitem B13.02(e)...............................percentage (%)

The provisional sum allowed under subitem (a) shall be expended to cover the actual costs based on a quotation basis for the additional survey work which may be ordered by the engineer other than that which is required by the contractor under his contractual obligations. The provisional sum allowed under subitem (c) shall be expended to cover the invoices submitted by Transnet to the engineer for the occupation of the Transnet reserve during selected construction activities. The provisional sum allowed under subitem (e) shall be expended to cover the storage and transportation of the borehole core boxes. The tendered percentage for the subitem (b), (d) and (f) is the percentage of the amount actually spent under the relevant subitem and shall include full compensation for all charges and incidental costs of the contractor, profit and overheads in connection therewith.”

C3-42

SECTION B1400: HOUSING, OFFICES AND LABORATORIES FOR THE ENGINEER’S SITE PERSONNEL

B1402 OFFICES AND LABORATORIES

(a) General

Replace the first sentence with the following:

“The engineer will require suitable office and laboratory accommodation, which shall be located as close as possible to the site. Preliminary details are shown on the drawings but final details shall be to the approval of the engineer in consultation with the contractor.” Add the following at the start of the seventh paragraph of this sub-clause:

"The offices and the laboratory shall be provided with electricity 24 hours per day, suitable voltage regulators to prevent damage due to voltage spikes and two short term uninterrupted power supply units for PCs, the cost of which shall be deemed to be included in the relevant tendered rates.” (b) Offices

Add the following at the end of the first paragraph:

“The engineer’s office complex shall comprise of five offices each with a minimum floor area of 14 m2, one conference room with a minimum floor area of 24 m2, one kitchen unit with a minimum floor area of 12 m2, two ablution units as specified in clause B1402(g) and 8 No. car ports. The offices shall be close to, but shall not form part of, the laboratory complex. A schematic layout of the engineer’s office and laboratory complex is indicated on the drawings.” Replace sub-clause (xii) with the following:

“A complete telephone service with 1 exchange line independent of the contractor shall be provided for the use of the engineer and his staff. In addition a separate exchange line shall be provided for the facsimile machine. The fax machine shall be located in the engineer’s office. The complete telephone service shall include the following:

1. Facsimile data capable line 2. 4 Mbps DSL line 3. 2 Mbps Uncapped internet account 4. 300 Mbps Wireless N Router 5. One cord telephone, and four cordless telephone hand sets

The telephone service shall be independent and not connected to the contractor’s telephone service. The Prime cost sum item B14.03(b)(i) shall include the purchase, monthly rentals and the cost of all telephone calls and facsimile data in connection with contract administration. The cost of all telephone and additional personnel cellular phone calls in connection with contract administration, monthly subscriber fees, rentals, including installation and final disconnection, shall be reimbursed through the prime cost sums provided under subitem B14.03(b).” Amend sub-clause (xv) to read:

"(xv) Each office, the laboratory and conference room shall be provided with:

(1) A notice board, size 2 m2 made from 12 mm soft board with a timber border.

(2) A whiteboard, size 2 m

2 which shall be fastened securely to the wall."

Amend sub-clause (xvii) to read as follows:

Add the following sub-clauses:

“(xviii) Plan holders which shall be able to accommodate 30 AO – sized drawings hanging vertically and of a robust construction to withstand continuous use over the duration of the contract.

C3-43

(xix) An electric refrigerator of specified capacity. (xx) Floodlights which are to be controlled by a photocell for security purposes at the offices and

laboratory shall be supplied as described in clause B1402(e) below. (xxi) Supply of an approved plastic type rain gauge which shall be securely mounted to a pole in a

position selected by the engineer.

(xxii) Minimum and maximum atmospheric temperature gauge as specified. (xxiii) Three metre long aluminium straight edge complete with two aluminium wedges 200 mm

long, tapering from 0 to 20 mm and calibrated gradations to mm accuracy with every 5th mm

numeric value marked on the wedge.” (c) Laboratories

Delete the first and second paragraphs and add the following:

"The site laboratory complex shall consist of:

(1) Office (2) (i) Testing rooms for:

indicators UCS/MOD Seals/Asphalt Concrete

(ii) Room for: ovens lockers

(3) Roofed work areas with concrete floors (4) Kitchen (5) Sample store (minimum 100 m2) (6) Ablution Units (Male/Female) (7) Car port (3 No)

The layout shall be similar to that indicated on the drawings, or as approved by the engineer, who will also indicate the engineer’s preferred location of power points, work benches, windows, doors, furniture and laboratory apparatus. There shall be a clear height from floor to ceiling of at least 2,4 m. Separate cooking facilities shall be provided as well as a locker room for the safe storage of the laboratory staffs personal and clothing items." Add the following to the end of the first paragraph of sub-clause (iii)(2):

"Support shall be provided by single skin brick walls." Add the following to the last paragraph of sub-clause (iii)

"All work benches…………..above floor level, and include a robust timber shelf, mounted 400 mm above floor level, for the storage of samples." In sub-clause (ix) replace “700 litres” with “5000 litres.”

Add the following sub-clause (xiv):

”A curing bath shall have a minimum internal area of four (4) square metres and shall be fitted with a circulating pump, a tap, a plug, a drain capable of completely emptying the tank as well as a thermostatically controlled device to control the water temperature. The bath shall be watertight”

C3-44

Add the following sub-clause (xvii):

"Standpipe, positioned outside the laboratory on the concrete working floor, supplied with a tap (with screwed end for attaching hose pipe) and a 30 metre length of heavy duty 20 mm internal diameter reinforced plastic hose complete with screwed tap connector provided." Add the following sub-clause (xviii):

"Lockable steel cabinets each with at least one shelf and large enough for the hanging and storage of one person’s change of clothing in a day." (g) Ablution units

Add the following:

“A dedicated ablution unit for the sole use of the Engineer’s supervisory staff shall be provided and located next to the engineers offices. A unit shall contain at least the following:

(i) One flush toilet and one urinal complete with running water and sewer pipes. (ii) Two wash hand basins complete with hot and cold running water. (iii) One shower complete with hot and cold running water (only laboratory facility) . (iv) Mirrors, toilet roll holders, paper towels, soap, clothes hangers etc. A ladies toilet unit is required and shall be similar to the above but without the urinal.” (l) Kitchen unit

Add the following sub-clause:

“The contractor is to supply a kitchen unit with a minimum floor area 6m2 and connected to the engineer’s offices. The kitchen is to be equipped with a single-bowel stainless steel basin with draining board, mounted on a floor unit. Hot and cold potable water supply connections and a waste drain are to be provided, also a table and kitchen cupboards 1m

3 in volume to be fitted.

(h) Communication system

Add the following:

"Where the contractor has provided two way radio communications for the use of his own site staff, he shall provide and install similar and complete sets in the vehicles of the engineer and his staff. The contractor shall maintain these sets in good working order at all times."

B1403 HOUSING

Add the following before paragraph (a):

“The housing for the engineer's staff shall be rented accommodation provided in proximity of the site. The rented accommodation shall be approved by the engineer before the lease is signed by the contractor.

(c) Rented accommodation

Replace the full stop at the end of the first sentence of sub-clause (c)(ii) with a comma and add "and for all services connected with such accommodation."

B1404 SERVICES

(b) Water electricity and gas

Add the following to the end of the third paragraph:

“The power supply shall be regulated by a suitable voltage regulator in order to maintain a constant current and voltage level at all times to prevent damage to the office and laboratory equipment and related machinery during power surges. In the event of damage to the office and laboratory equipment and related machinery because of a faulty voltage regulator, the contractor shall be liable

C3-45

for payment of all repair or replacement costs of such damaged items. Payment for the voltage regulator shall be deemed to be included in the rates tendered for the supply of power.” Add the following to the end of the fourth paragraph: “An on-site motor-alternator shall supply electricity when power from a recognized power-supply authority is not available.” Add the following new clause:

“(e) Kitchen Facilities

The contractor shall provide and sustain for the duration of the contract, a small kitchen with facilities close to the engineer’s offices. The kitchen shall contain at least the following:

(i) One refrigerator (min. 200 litre). (ii) A 2-plate stove. (iii) Kettle, cups etc. for tea and coffee and the availability of a person to make and serve tea and

coffee. The rate tendered for this item shall include for a reasonable supply of tea, coffee, sugar and fresh milk daily.”

Add the following sub-clause:

“(f) Office assistants

The contractor in consultation with the engineer shall appoint a suitable person as an office secretary/receptionist to provide a continuous service to the engineer’s site personnel. This person shall be paid by the contractor including transport and other costs and benefits to the same extent as the contractor provides for his own employees of a similar grade. The person selected for this appointment shall have limited experience but must have the potential and be willing to receive training (both formal and informal) to develop into a competent secretary / receptionist within the duration of the contract. The training shall be provided in terms of section D and paid for under item D10.02” The contractor shall from time to time be required to make available to the engineer’s personnel the services of semi-skilled labour for his exclusive use on site. The engineer shall be at liberty to accept or reject the staff proposed. Payment for office assistants shall be made under item B14.08(f)”

B1405 GENERAL

Add the following to paragraph (e):

“In addition, the offices and laboratories shall be supplied with approved burglar proofing, an alarm system with armed response and the whole site shall be guarded full time during the day and night, as well as over weekends and holidays. The site shall also be fenced with a 2,4 m high security fence with a razor-cut wire being used as strands or with a brick wall as well as a formal gate control security system. The contractor is to provide gate keys and security panic buttons to all the engineer’s site personnel. The offices shall be illuminated at night by security lighting consisting of lamps installed 8m above ground level on suitable poles to provide illumination not less than 10-lux measured at ground level. The cost of this protection shall be included in item B13.01.” Add the following to paragraph (f):

“The offices and any living accommodation must be separated by at least 200 m.”

C3-46

B1406 MEASUREMENT AND PAYMENT Item Unit B14.01 Office and laboratory accommodation Add the following subitems: ”(g) Locker room .............................................................................................. square metre (m2) (h) Kitchen Unit.............................................................................................. square metre (m2)” Item Unit B14.02 Office and laboratory furniture Amend subitem (a) to read as follows: “(a) Chairs with padded seat and back: (i) Office (ordinary) ............................................................................................... number (No) (ii) Office visitors chair with arm rests .................................................................... number (No) (iii) Office chair executive with arm rests................................................................ number (No)” Add the following subitems: “(g) Kitchen table (6 seater) ..................................................................................... number (No) (h) Typist desk (L-Shaped) .................................................................................... number (No)” Item Unit B14.03 Office and laboratory fittings, installations and equipment (a) Items measured by number Add the following to sub-item (i) "including adequate voltage regulators." Add the following subitems: “(xix) Plan holder ....................................................................................................... number (No) (xx) Floodlights complete with photocell and poles ................................................... number (No) (xxi) Supply and installation of rain gauge .................................................................. number (No) (xxii) Minimum and maximum thermometer ................................................................. number (No) (xxiii) 3m aluminium straight edge complete with two wedges ...................................... number (No) (xxiv) Waste paper basket ........................................................................................... number (No) (xxv) Electrical kettle ................................................................................................... number (No) (xxvi) Microwave oven (850 watt minimum power output) ............................................. number (No) (xxvii) First aid kit as per OH&S regulations .................................................................. number (No) (xxviii) Standpipe complete with 30m hose .................................................................... number (No) (xxix) Steel lockers ...................................................................................................... number (No) (xxx) Cupboard with lock for nuclear gauge ................................................................. number (No) The tendered rate for subitem B14.03(a)(xx) shall include for the operation of the lights from sunset to sunrise for the full duration of the contract.”

C3-47

(b) Prime cost items and items measured and paid for in a lump sum Add the following subitems: “(ix) Cell phones costs for additional personnel, including pro-rata rentals, for calls in connection with contract administration .............. prime cost sum (PC sum) (x) Handling costs and profit in respect of subitem 14.03(b)(ix) above ................... percentage (%) Payment of B14.03(b)(ix) shall include for the cost of all cellular telephone calls in connection with contract administration, as well as pro rata fixed costs. The tendered percentage for payitem B14.03(b)(x) shall be a percentage of the amount actually spent under subitem B14.03(b)(ix) which shall include full compensation for the profit and handling costs incurred in managing provision of the cellular phones and monthly billings.” (c) Items measured by area: Add the following subitem: “(viii) Softboard notice board .................................................................................. square metre (m2) (ix) White boards ...................................................................................................... number (No)” Item Unit B14.08: Services Add the following sub-item: “(e) Kitchen facilities for the Engineer: (i) Refrigerator (min. 200 litre) ................................................................................... number (No) (ii) 2-Plate Stove ........................................................................................................ number (No) (iii) Kettle, cups etc. for tea and coffee and the availability of a person to

make and serve tea and coffee ...................................................................................... month” Add the following sub-item: “(f) Office assistants for the Engineer: (i) Provision of secretary/receptionist ................................................................................... month

(ii) Services of semi-skilled labour for the engineer ................................................ provisional sum The tendered rate for subitem (f)(i) shall include full compensation for all monthly costs incurred in the employment of the secretary/receptionist as outlined in subclause B1404(f) above. The provisional sum for subitem (f)(ii) is allowed to cover the cost of semi-skilled labourers made available to the engineer as and when required, to assist him. Measurement and payment for their services shall be made in accordance with the applicable daywork rates. B14.10 Provision of Photostat facilities Amend this payitem description to read “Provision of copying facilities” and in the payment prescription, amend “photocopier” to read “combination colour printer / copier / scanner / facsimile machine”.

C3-48

SECTION B1500: ACCOMMODATION OF TRAFFIC

B1501 SCOPE

Add the following:

“It is a condition of this contract that traffic is accommodated taking into account the provisions of the latest edition of the South African Road Traffic Signs Manual (SARTSM). The latest version for use in the accommodation of traffic is volume 2, chapter 13 of the June 1999 edition. Copies of this publication are available from Government Printers –Tel: (012) 334 4507/8/9 or (012) 334 4510 Fax: (012) 323 9574. This section also covers the provision of additional information signs for motorists and the release of any notices to the media and public.”

B1502 GENERAL REQUIREMENTS

Insert the following:

“The entire site will be handed over to the contractor at the beginning of the contract. The sequence in which various parts of the site may be occupied by the contractor for the execution of the different items of work shall be subject to the requirements of the contract documents regarding, inter alia, working hours and the number, spacing and length of the work areas which may be occupied at any particular time. The contractor shall programme his work taking due cognizance of restrictive conditions indicated in clause B1204. The contractor's tendered rates shall include full compensation for all possible additional costs which may arise from the above and no claims for extra payment as a result of this modus operandi will be considered. The contractor shall also note that no additional payment shall be made for the additional work and cost that with half-width construction. Payment for this additional work and cost shall be included under payment item B15.01.” (a) Safety

Replace the full stop at the end of the first paragraph and continue with the following:

“... flow of traffic, including the prohibition of his, and his subcontractor’s, construction plant from disregarding the stop/go accommodation of traffic control facilities. Failure to comply with this requirement shall be taken as a non-compliance cost event in terms of B1502(l).” Add the following paragraphs:

“The contractor shall be responsible for maintaining the existing road surface both within the works area and the advance warning and termination areas in a safe and trafficable condition for the duration of the contract. The contractor shall within 7 (seven) working days after receipt of a 3rd party claim acknowledge receipt to the claimant. The engineer shall be copied on all correspondence regarding 3rd party claims. The contractor shall at the monthly site meeting report on the status and outcome of the 3rd party claims. The contractor shall be fully responsible for all the traffic accommodation on site, including for work undertaken by sub-contractors, e.g. at bridges etc. Traffic shall be accommodated as indicated on the drawings unless an alternative tender incorporating an amended method of traffic accommodation has been accepted. The contractor may amend the agreed traffic accommodation scheme but only with the approval of the engineer in consultation with the provincial and municipal traffic authorities.

C3-49

During the non-working hours, or when construction is not taking place on a certain section of road all obstructions to the traffic shall be removed and all signs no longer applicable to the situation shall be removed to an approved safe location or effectively covered. No equipment or vehicles shall be stored or parked in the median or on the road side during non-working hours except if protected or demarcated and only if approved by the engineer. When requested by the engineer, the contractor shall provide lane closures for the purpose of road inspection. This must be done in advance of the actual programmed time for the work. For safety reasons, all material for the construction of layerworks, dumped in heaps next to the road surface where traffic is accommodated, shall be flattened on the same day. Payment for this activity shall be deemed to be included in the relevant tendered rates under sections 3300, 3400 and 3600. Non-compliance with the above conditions shall be sufficient cause for the engineer to impose the non-compliance cost under clause B1502(l).” (f) Approval of temporary deviations

Add the following:

“If, after any temporary deviation has been constructed, any changes are considered necessary or desirable, the proposal shall be submitted to the engineer for his approval." (i) Traffic safety officer

Add the following to the end of the second paragraph:

“The contractor shall submit a CV of the candidate to the engineer for approval before the candidate is appointed as the traffic safety officer. “ Insert the following as the opening phrase to sub-sub-clause (i):

“make himself available to discuss road safety and traffic accommodation matters whenever required by the engineer and shall be responsible…” Delete sub-sub-clauses (ii) and (iii) and replace with the following:

“(ii) Record on neat and dimensioned sketches and submit to the engineer the position and sign reference number, where applicable, of each sign, barricade, delineator, cone, amber flicker light, guardrail and permanent or temporary painted road marking feature. The position of each shall be adequately referenced from the marker boards or other surveyed points on the site of the works. These records shall also show the date and time at which the recorded traffic accommodation features are certified correct by the traffic safety officer, and shall be signed by the traffic safety officer before being submitted to the engineer. The records shall similarly account for whatever changes are made in the field. Such changes shall record the position of flagmen and stop/go control men and their associated traffic accommodation equipment wherever they are used. (iii) Personally inspect the position and condition of each traffic accommodation feature on the whole site of works twice per workshift, whether daytime or nightwork, and at least twice a day/night during non-working hours, to record all irregularities discovered and the remedial action taken, and to sign off as correct and submit to the engineer such record sheets by middle of the next working shift. The above inspections must at least take place before the commencement of peak traffic periods. The traffic safety officer shall keep a duplicate book for this specific purpose. The traffic safety officer shall also submit with this report the daily labour returns of flagmen, stop/go, traffic signal control personnel employed and the traffic data recorded at each traffic control point.”

C3-50

Add the following subsubclauses:

“(ix) The traffic safety officer shall be equipped with a cellular telephone and shall have a traffic safety vehicle and sufficient labour at his disposal 24 hours a day, including all prescribed non working days, and shall not be utilised for other duties. He shall be directly answerable to the contractor’s site agent. The traffic safety officer shall have his own vehicle to carry out inspections and at least one assistant to accompany him full time. Furthermore the traffic safety vehicle shall be a truck with a capacity of at least 3 tons and shall be equipped with a high visibility rear panel in accordance with the requirements of the SARTSM as well as a truck mounted impact attenuator complying with TL-2 criteria when tested in accordance with NCHRP 350 or N1 criteria when tested in accordance with EN 1317. (Certification of compliance must be on site at all times). The attenuator shall be used when the vehicle is utilized to close traffic lanes or when attending to stationary or broken down vehicles or accident scenes. The words TRAFFIC CONTROL shall be written on a warning sign in highly legible letters, not less than 150 mm high, and the sign shall be mounted on both the traffic safety officer’s vehicle and the traffic safety vehicle at least 1,5 m above ground level. The proposed sign and letter dimensions shall be submitted to the engineer for his approval. The vehicles shall also be equipped with an amber-coloured flashing light of the rotating parabolic reflector type with a minimum intensity of 100 W, or a LED flashing light with equal light intensity. The warning light shall be switched on at all times and the sign shall be displayed when the vehicle is used on site. The traffic safety officer shall have a direct line of communication at all times with the police and traffic officers responsible for the area within limits of the contract. (x) Ensure that all obstructions related to the contractor’s activities be removed at the end of each work shift where applicable as instructed by the engineer and that the roads are safe for the travelling public. (xi) The traffic safety officer shall, in addition to the duties listed in paragraph 1502 (i), also be responsible to arrange for the removal of stationary or broken down vehicles off the roadway in conjunction with the routine maintenance contractor and/or traffic authorities and implementing actions requested by the traffic authorities with regard to the work to be carried out and be responsible for the erection and maintenance of all traffic signs necessary for the accommodation of traffic. (xii) In the event of an accident the traffic officer shall record in a written report the details of the accident, record the position of all temporary road signs, barricades, delineators, flagmen and any other devices used for traffic accommodation. In addition the report shall include a neat dimensional sketch, photographs, identifiable permanent features, and any other relevant information. (xiii) At least two separate traffic safety officers and teams shall be employed when construction is carried out during the day and night.” Add the following subclauses:

“(j) Crossing the median or carriageway centreline

No vehicle or item of equipment shall be allowed to cross the median of a dual carriageway road or the centreline of a single carriageway unless the traffic accommodation and signage specifically allows for this and is approved by the engineer as safe. (k) Site personnel

The contractor shall ensure that all his personnel, excluding those who are permanently office bound, are equipped with reflective safety jackets and that these are worn at all times when working on or near to the travelled way. Any person found not wearing a reflective jacket under these circumstances shall be removed from the site until such time as he is in possession of and wearing a reflective jacket. Reflective safety jackets shall be kept in good condition and any jackets that are, in the opinion of the engineer, ineffective shall be immediately replaced by the contractor. All construction workers, including drivers/operators of construction plant and equipment, and other personnel and visitors shall wear high visibility clothing when on the construction site.

C3-51

Overalls shall be either orange (preferred) or red-orange and raincoats shall be bright orange or red-orange. The jackets will be fluorescent yellow in colour H201 waistcoat or equal approved, with retro-reflective strips as indicated in South African Road Traffic Signs Manual, Volume 2, Chapter 13, Figure 13.30. The safety jackets to be supplied to the engineer will be of a similar type and the contractor will obtain the approval of the engineer before proceeding with the purchase of such jackets. The contractor will maintain an adequate supply of H201 waistcoat jackets (minimum 10) for the use of visitors and delivery drivers if they are likely to be deployed outside of their vehicle whilst on site. In addition, the contractor will ensure that all subcontractors, whether established or emerging, and their workers, suppliers and visitors conform to the above requirements and that they allow for the implied cost thereof in their tendered rates. All costs in regard to the above must be included in the appropriate tendered rates. Hard hats shall be used by construction personnel working in areas where there could be a danger of items falling on their heads. Hard hats shall be in accordance with SANS 1397-2003, Type 1. (l) Non-compliance events

Whenever the following events occur, the contractor shall be subjected to penalty conditions expressed in the Appendix to Tender. (i) Non-compliance with accommodation of traffic specifications

Failure or refusal on the part of the contractor to take the necessary steps to ensure the safety and convenience of the travelling public, accommodation of traffic, plant and personnel in accordance with these specifications or as required by statutory authorities or ordered by the engineer, shall be sufficient cause for the engineer to apply non-compliant cost as follows: A fixed non-compliance cost of R10 000,00 per occurrence shall be deducted for each and every occurrence of non-compliance with any of the requirements of section 1500 of the standard specifications and section B1500 of the project specifications. In addition a time-related non-compliance cost of R1000,00 per hour over and above the fixed non-compliance cost shall be deducted for non-compliance to rectify any defects in the accommodation of traffic within the allowable time after the engineer has given an instruction to this effect. The engineer's instruction shall state the allowable time, which shall be the time in hours for reinstatement of the defects. Should the contractor fail to adhere to this instruction, the time-related non-compliance cost shall be applied from the time the instruction was given. (m) Liaison with relevant authorities

Where applicable, the contractor shall liaise on a daily basis with the employer’s relevant i-traffic management centre (TMC), informing their operations manager about the expected works and lane closures for the next day, inclusive of all work shifts, in order for the operational manager to take into account the accommodation of traffic impacts in the TMC’s operations. The daily report shall be submitted to the TMC operations manager not later than 10h00. For exceptional traffic accommodation impacts, such as lane closures in peak hours, short term contra flow conditions, lane closures over weekend peak periods, etc, the TMC operational manager shall be informed seven days prior to the event. The contractor shall inform the TMC about all traffic related incidents, as soon as he becomes aware of the incident.

C3-52

Where required the contractor shall be responsible for acquiring the services of a municipal traffic officer and traffic vehicle (equipped with a blue light) to assist in the accommodation of traffic. The traffic officer and vehicle will be required when lanes are to be closed and/or where directed by the engineer. If the road under construction forms part of an abnormal load route the contractor shall liaise with the relevant provincial abnormal load office that issues permits to ensure that permits are not issued when construction restrictions do not allow passage of the abnormal load. (n) Other requirements

The following other requirements must be adhered to for the entire contract period:

(i) The travelling public shall have the right of way on public roads and the contractor shall make use of approved methods to control the movement of his equipment and vehicles so as not to constitute a hazard on the road. (ii) The contractor’s tendered rates for the relevant items in the schedule of quantities shall include full compensation for all possible additional costs which may arise from the above and no claims for extra payment due to inconvenience as a result of the modus operandi will be considered.”

B1503 TEMPORARY TRAFFIC-CONTROL FACILITIES

Replace the first sentence of the first paragraph with the following:

“The contractor shall provide, erect and maintain the necessary traffic-control devices, road signs, channelisation devices, barricades, warning devices and road markings (hereinafter referred to as traffic-control devices) in accordance with these special provisions and as shown on the drawings and in the SARTSM and remove them when no longer required. It shall be incumbent upon the contractor to see to it that the abovementioned traffic-control devices are present where required at all times and are functioning properly.” Replace the last sentence of the second paragraph with the following:

"Traffic-control facilities no longer required at the site of a deviation or a lane closure shall be moved for re-use. Traffic-control facilities lost or damaged by the contractor shall be replaced at his own cost. Where it can be proved that loss of or damage to such facilities is beyond the contractor's control and not the result of his actions or omissions, the engineer may order the facilities to be replaced and paid for at scheduled rates." Replace the third paragraph with the following:

“The type of construction, spacing and placement of traffic-control devices shall be in accordance with the SARTSM. The recommended arrangements of the traffic control devices illustrated and/or drawings issued by the engineer shall not be departed from without prior approval of the engineer. The arrangements expected to be most commonly used in the contract are given on the tender drawings. The details shown for spacing and placement of traffic-control facilities may however, be revised at the discretion of the engineer where deemed necessary to accommodate local site geometry and traffic conditions.” a) Traffic control devices

Add the following at the end of the last paragraph:

“At each signalised traffic control point, an all-weather shelter of at least three (3) square metres capable of accommodating two operators, with a clear window, a stable door, two chairs and a portable chemical toilet that shall be regularly maintained, shall be provided. Each control point shall have a 2 (two) phased signal system mounted on 3m high steel poles complete with all electrical wiring, a floodlight system of at least 2x400W metal halide floodlights mounted onto a 5m high pole to

C3-53

light up the traffic control point and lighting along the road where the traffic will queue. The provision shall include for a sufficient continuous power supply to operate each traffic control point. Included in the establishment and operation of the traffic control devices shall be a communication system that allows the operators to communicate with each other. At each traffic control point, plastic moveable barriers, fitted with STOP signs to both sides, shall be provided to prevent vehicles from utilising the closed road lanes. These barriers shall be moved to open and close the relevant lanes for road users. Records of opening and closing of closures and traffic counts shall be kept and submitted daily to the traffic safety officer.” (b) Road signs and barricades

Add the following:

“The contractor shall be responsible for the protection and maintenance of all signs, and shall at his own cost replace any that have been damaged, lost, or stolen. All temporary road signs required to remain in position for some time shall be pole mounted as shown on the drawings. All temporary road signs required to be moved more often shall be mounted on portable supports for the easy moving of signs to temporary positions. The only permitted method of ballasting the sign supports shall consist of durable sandbags filled with sand of adequate mass to prevent signs from being blown over by wind. The cost of the sandbags shall be included in the tendered rates for the various types of temporary road signs. The covering of permanent road signs, if applicable, shall be by utilizing a suitable and durable covering that shall be pulled over the sign in the form of a hood and fastened to the signposts. Plastic bags or other materials and fastened by means of adhesive tape shall not be permitted. The cost of covering of permanent road signs shall be included in the tendered rates of items B15.01.” (c) Channelisation devices and barricades

Add the following:

“The use of drums as channelisation devices shall not be permitted. Drums may however be used to set up barriers as provided for in sub-clause 1503(d). Delineators shall:

(i) comply with the manufacturing and reflective requirements of the SARTSM and the blades shall be reversible with dimensions as indicated on the drawings; (ii) have smooth and round edges and be mounted on a post and base. All components shall be of durable plastic material; (iii) have the lower edge of the reflective part of the delineator mounted not lower than 250 mm above the road surface; (iv) be capable of withstanding the movement of passing vehicles and gusting winds up to 60km/h in typical working conditions without falling over. To achieve this, the base shall be at least 0,18 m2 and ballasted by its own weight or with sandbags filled with sand; (v) together with its mounting be designed such that it will collapse in a safe manner under traffic impact. Traffic cones manufactured in a fluorescent red-orange or red plastic material may be used only at short term lane deviations during daylight. Cones shall not be used on their own, but shall be interspersed with delineators at a ratio not exceeding 3:1. Cones used on all deviations shall be 750 mm high. Lane closures which continue into the night time shall be demarcated by delineators only. On section of road where the centreline has been obliterated, delineators shall be provided on both road edges at minimum 200 m spacing on straight sections and at least 3 (three) visible on all curves.”

C3-54

(d) Barriers

Add the following:

“Barriers for preventing vehicles from leaving the permitted lanes shall be movable barriers with an approved safety shape design (e.g. New Jersey, F-shape or single slope). Temporary movable barriers shall be obtained from suppliers and placed between the existing road and the construction areas. They shall comply with the requirements of either of the following specifications: (i) The European Specification EN 1317 with containment level H1, or (ii) The American Federal Highways Administration Specification NCHRP Report 350 with containment level TL4. When applying these specifications the contractor must take cognisance of his liabilities relating to the installation of temporary works to provide protection to the permanent works and safety to his personnel and select a barrier system appropriate to his chosen work methodology. Particularly pertinent is the working width rating of a barrier system; the displacement width of the system shall not exceed the available safe width to the nearest edge of the construction. All moveable barriers shall be installed in accordance with the manufacturer's instructions or generally accepted best practice and shall be submitted to the engineer for review and comment. Where instructed by the engineer, the terminal sections of moveable barriers may be a proprietary type or may be contractor designed to attenuate head-on impacts of at least NCHRP Test Level 1 (50 km/h, 2 000 kg) or EN1317 Containment Level H1 (80 km/h, 1 500 kg).” (e) Warning devices

Add the following:

“All construction vehicles and plant used on the works shall be equipped with rotating amber flashing lights and warning boards as specified. All vehicles and plant before being allowed onto the site shall obtain a clearance permit from the engineer. (i) Vehicle mounted flashing lights

Rotating lights shall have an amber lens of minimum height of 200 mm and shall be mounted in such a way as to be highly visible from all directions. The lights on construction vehicles shall not be switched on while vehicles are being operated on unrestricted sections of a public road, but shall be switched on while construction vehicles are operating within the accommodation of traffic area, as the vehicles decelerate to enter a construction area, and as the vehicles accelerate to the general speed when entering the road from a construction area. Lights on plant shall operate continuously while the plant is working alongside sections of road open to public traffic within the work areas. All LDV's and cars operating on site shall also be equipped with rotating amber flashing lights which shall be placed so as to be highly visible from all directions and operated continuously while the vehicles are manoeuvring in or out of traffic or are travelling or parked alongside roads open to public traffic within the work areas. Rotating lights and the "construction vehicle" signs on the contractor's vehicles and plant shall not be paid for separately but shall be included in the rates covering the use of the vehicles. The contractor shall apply and maintain lights together with temporary mounting brackets, to the approval of the engineer. Vehicles and plant that do not comply with these requirements shall be removed from the site. (ii) Sign mounted flashing lights

Two amber flashing lights shall be vertically mounted on top of the traffic signs at each end of each traffic accommodation section as shown on the drawings. The lights shall be operated during the hours of darkness.

C3-55

(iii) Flashing illuminated arrow board

The arrow board shall be made up of light sources mounted on a backing board. A single shaft arrow will be required that can be used for both left and right directions. The light sources must be of LED type to improve visibility if used also during day time. The arrow board shall be used at lane drops as described B1502 or as instructed by the Engineer. (iv) Mobile variable message sign (VMS)

The VMS shall be mobile and located in a safe position to convey to the travelling public of traffic conditions ahead and/or inform a motorist of his actual travelling speed. The mobile VMS system must be equipped with solar panels to provide an output of 400 Watt. It shall be stable for shocks up to 3G and wind speeds up to 120 km/h. The sign face shall not be less than 3 m wide by 1.5 m high to provide a full matrix LED with at least 50 and 27 pixels for the width and height respectively. Each pixel shall have 4 LED’s and the pixel spacing shall not be less than 60mm. An LED mask for contrast and shading shall be provided. The sign shall be able to display 3 lines by 10 characters. The cone of vision is to be 30º. The information displayed on each individual sign shall be controlled by a computer with internet connection operated by the contractor. (v) Magnetic Strips”

Magnetic strips shall be provided for all construction vehicles, and fitted to the rear end of the vehicles. The size of these signs shall be 250 mm high x 1 000 mm wide, with a letter size of at least 70 mm high. The wording “CONSTRUCTION VEHICLE” needs to be added on these strips, on top of a Class 4 Diamond grade Fluorescent Yellow-green background. Prior to ordering the magnetic strips for the engineer’s staff, the contractor will verify with the engineer if the size of the signs will fit the engineer’s personnel’s vehicles, and some adjustments might be necessary for specific vehicles to ensure the effectiveness of the signs.” (f) Road Markings

Add the following new paragraphs:

“Temporary road marking shall be reinstated before the road is opened to full width traffic. Temporary road marking shall consist of heavy pre-marking, and/or retro-reflective road marking paint, and/or removable road marking tape, and/or temporary road studs, as directed by the engineer. Temporary road studs shall be installed at double the spacing and shall be fixed to the road surface with the bitumen rubber crack sealant to allow for easy removal by application of gentle heat. Temporary road marking lines for demarcation of temporary traffic lanes, on the final road surface shall not be allowed, except if approved by the engineer. Should temporary road marking lines be approved, it shall consist of one of the following as directed by the engineer: (i) Construction grade tape for temporary road marking which can be removed by applying gentle heat. The tape shall be foil backed, adhesive, reflective tape. The tape shall be capable of being easily removed from the road surface by the application of gentle heat.” (ii) Removable road marking paint.” Add the following subclauses: “(g) Other traffic control measures ordered by the engineer The engineer may instruct the contractor to provide any other road sign, reflective tape, etc not measured in standard payitems. Such road signs shall conform to the requirements of the SARTSM, or specification provided by the engineer. Similarly, in order to ensure that the travelling public is kept

C3-56

fully informed and warned on matters relating to the accommodation of traffic, construction sign posting and the effect of the construction on the free flow of traffic through the site, the engineer may arrange for advertising in the press and/or for other forms of publicity. (h) Flagmen

Flagmen shall be provided where shown on the drawings or required by the specification. During the daytime, at least two flagmen shall be provided at each traffic control point in addition to the STOP/GO sign operator, one flagman at the first speed reduction sign and a second roving flagman at least a 100 m behind the last vehicle in the queue to indicate to the traffic to stop. At night time all flagmen shall be equipped with a suitably visible strobe, and a torch at each traffic control point as well as the traffic light operator. Where the shoulder of the road is closed to traffic, flagmen shall be provided at the leading ends of closures during daytime. These flagmen shall be provided at the first speed reduction sign to warn the traffic about the closure. In order to remain vigilant no flagmen shall be on duty for a continuous period of more than 4 hours without an adequate rest break. Flagmen shall be adequately trained in the standard flagging techniques as described in the SARTSM (refer to figure 13.23 of detail 13.23.1) and be provided with conspicuous clothing such as safety jackets utilizing retro-reflective and/or fluorescent panels in red, yellow and/or white. Flagmen shall have in their possession, at all times, certification that they have attended and passed an accredited course in flagging techniques before being allowed onto the construction site. Flags shall be made from bright red or red-orange material and shall be square with a minimum side length of 600mm. The flag shall be attached to a staff at least 1,0 m in length. In terms of lateral clearance and safety, flagmen shall stand on the shoulder of the lane of traffic that is being controlled and under no circumstances shall flagmen be permitted to stand within the traffic lane. In order to obtain maximum visual impact for the travelling public, flagmen shall stand-alone. (i) Sandbags

Sandbags used as ballast for portable stands shall be of an approved size (minimum 15 litre) and manufactured from durable UV-resistant material capable of withstanding moisture and repeated handling without tearing. The bags shall be partly filled to ensure a flattish appearance and not to bulge. The material size for filling the sandbags shall be passing 100% through a 4,75 sieve. The cost of the sandbags shall be included for in the tendered rates for the various types of temporary road signs. (j) Cleaning of traffic control facilities

Traffic control facilities shall be cleaned as necessary, but at least once a week in summer and at least twice weekly in winter. All dust, mud, concrete, bituminous or other foreign material shall be washed off with a cloth and free running water to the satisfaction of the engineer. If the co-efficient of retro-reflection of any of the signs fall below 80% of the value given In Table 1 of CKS 191 – 1987 (observation angle 0.33º, entrance angle 5.0º) for the grade and colour of the material used, the sign shall be considered defective and shall either be rectified or removed and replaced.”

B1504 WIDTH AND LENGTH OF TEMPORARY DEVIATIONS

Replace paragraphs one to four with the following:

“Temporary deviations shall be done as specified in the contract specification and/or on the drawings and/or as instructed by the engineer.”

B1510 EXISTING ROADS USED AS DIVERSIONS

Add the following:

"The contractor shall indemnify the employer against all proceedings, claims, actions, damages and costs which may arise from or be related to damage to vehicles or property or injury to persons as a

C3-57

result of loose stones or aggregates on the road surface or as a result of bituminous applications during the construction of the works. The contractor shall arrange his activities so that construction traffic and equipment do not unnecessarily obstruct public traffic or force it to a complete standstill. The flow of public traffic shall always take precedence and the contractor shall not stop or delay public traffic to make way for construction traffic."

B1513 ACCOMMODATION OF TRAFFIC WHERE THE ROAD IS CONSTRUCTED IN PARTIAL WIDTHS

Delete paragraphs 5 and 7 and add the following at the end of paragraph 6:

“During the night, the traffic shall be controlled utilising traffic signals as specified in clause B1503.” Add the following as a final paragraph to this clause:

“The contractor shall programme the works in such a way to maintain two-way traffic within the contract limits during the contractor’s annual shutdown period between December and January. The contractor shall further ensure that there is no vertical step between two opposing traffic lanes. Failure to comply with these specifications will entitle the Engineer to apply a lane occupation levy.”

B1517 MEASUREMENT AND PAYMENT

Insert the following paragraph after the heading:

“The contractor’s tendered rates for the relevant items in the schedule of quantities shall include full compensation for all possible additional costs which may arise from the above and no claims for extra payment due to inconvenience as a result of the modus operandi will be considered.” Amend item 15.01 to read as follows:

“Item Unit

B15.01 Accommodating traffic and maintaining temporary deviations:

(a) On the national route .......................................................................................kilometre (km) (b) On the ramps and cross roads of the Interchanges ..........................................kilometre (km) (c) On existing provincial routes ............................................................................kilometre (km) (d) On new provincial routes ..................................................................................kilometre (km) (e) On new access roads .......................................................................................kilometre (km) Replace the first paragraph with the following:

“The unit of measurement shall be the kilometre, measured along the centre line of the roads (the carriageways of the dual carriageway shall not be measured individually), the ramps between the noses and/or the cross roads where construction work is carried out (whichever is the shorter). Accommodation of traffic shall be measured once only, that is no separate payments shall be made for lane and shoulder rehabilitation, slurry, reseal, asphalt overlay, side drains, etc. Only the net distance of the road shall be measured and overlapping distances during staged construction or separate carriageways shall not be measured. The limit of construction indicated on the drawings will be used for measurement purposes, and the distances either side for traffic accommodation signage shall not be measured separately. A distinction shall be made between accommodation of traffic on the through road and accommodation of traffic on the ramps and cross roads of interchanges. No differentiation shall be made with regards to day-time or night-time accommodation of traffic. The tendered rate shall include for both scenarios. Add the following to the end of the second paragraph:

“The tendered rate shall also include for the accommodation of farm/rural access points to existing and new roads, no additional payments shall be made for this.”

C3-58

In the second paragraph, delete the whole of the second sentence, which refers to compensation for the traffic safety officer.

In the third paragraph second sentence, insert a full stop after “use” and delete the remainder of the sentence."

In the third paragraph, insert “completed (both carriageways)” in the third sentence between “new” and “road”."

Item Unit

B15.03 Temporary traffic control facilities

Amend the description of the following subitems as follows: “(g) Road signs, TSC, TGD, TGE, TGA, TGB, TGDL, TGS, TGP and TIN series. (h) Delineators (TW401/402) (size indicated): (i) Single (size and type) ........................................................................................ number (No) (ii) Mounted back to back (size and type) ................................................................ number (No) (l) Movable barriers (i) New concrete units manufactured as indicated on the drawing J01802-01-10-610 ...................................................................................................metre (m) (ii) New yellow plastic water filled barriers ................................................................... metre (m)”

Replace the payment description for (a) flagmen to the following:

"The unit of measurement shall be a full day and night worked by flagmen. A man-day shall be deemed to comprise of three eight hour shifts in a twenty four hour period. Three shifts of eight hours per flagman equates to one man-day. Shorter normal day or night shifts (6 to 12 hours) shall be measured as a half man-day. The tendered rate shall include full compensation for flagman who is required to control traffic by way of flags, portable STOP and GO-RY signs or signalised traffic control points and shall include the provision of flags, visible strobe, torch and safety jacket as specified.” Add the following to the measurement and payment paragraph (h):

“The tendered rate shall also include full compensation for the sign stand, for the provision of two UV-resistant sandbags per delineator to hold it in position and for their replacement when necessary due to whatever reason. In addition the tendered rates shall also include for the cost of providing in each base two pre-drilled holes so that the blade can be secured to the base by means of two fixing plugs. Only the plastic type road sign TW 401/402 complying with clause B1503(c) will be allowed on this contract. Delineators which in the opinion of the engineer, have become unserviceable or were lost for reasons considered by the engineer to be beyond the control of the contractor and are replaced, will be paid for at the ratio of one for every two replaced.” Add the following sub-items:

“(n) Other traffic control measures ordered by the engineer: (i) Provision of other traffic control measures ................................................... provisional sum (ii) Handling costs and profit in respect of sub-item B15.03(n)(i) ......................... percentage (%) Expenditure under this payment item, (e.g. media releases or other signs to deliver information to the public) shall be made in accordance with sub-clause 13.5 of FIDIC Conditions of Contract for the supply and installation of any additional signs or other traffic control measure ordered by the engineer in accordance with clause B1503(g).

C3-59

The tendered percentage is a percentage of the actual amount spent under subitem B15.03(n)(i), which shall include full compensation for the handling costs of the contractor, and the profit in connection with providing other signs and traffic control measures ordered by the engineer. o) Covering of permanent signs (with non-transparent material) ...................... square meter (m²) The unit of measurement shall be the square metre of sign face covered outside the limits of construction not paid for under item B15.01 and the tendered rate shall include full compensation for the cost of the supply on site of a cover as specified, the covering of the sign, the maintenance of the cover at all times during all weather conditions, its replacement should the cover be irreparably damaged, stolen, blown away or otherwise removed and the subsequent removal of the cover when no longer required. For covering with retro-reflective material, the rate shall include full compensation for all material, plant and labour to stick the material over the existing lettering, and the final removal thereof.” Amend the description of item 15.04 as follows:

Item Unit “B15.04 Relocation of traffic control facilities (a) All facilities except moveable concrete barriers ................................................ lump sum” (b) Concrete New Jersey type movable interlocking barriers................................. metre (m)” Add the following to the measurement and payment paragraph: “For subitem (b) the unit of measurement shall be the metre of concrete barrier relocated. The tendered rate shall include full compensation for dismantling, storing if necessary, transporting, re-erecting and inspecting the concrete barriers, and for all labour, equipment, plant and incidentals necessary to re-locate the concrete barriers. Delete payment items 15.08 and 15.09 as maintenance of the road and/or bypasses are paid under B15/39.02 and 15/39.03. Delete payment item 15.10 as all additional traffic accommodation cost with half-width construction shall be included under item B15.01. Amend item 15.11 to read as follows:

“B15.11 Traffic control devices

(a) Providing signalised traffic control devices ......................................................... number (No)

The unit of measurement shall be the number of signal sets provided where a set is deemed to be 2 (two) signalised facilities, one at each end of a closure. The tendered rate shall include full compensation for the provision of complete sets of signalised traffic control devices as specified.

75% of the rate offered will be payable when the sets have been provided on site ready for use and 25% when finally removed from the site.

(b) Operating signalised traffic control devices ........................................................... month sets

The unit of measurement shall be the month set or part thereof that the signalised traffic control device is operated. The tendered rate shall include full compensation for all costs necessary to operate and maintain the signalised traffic control devices in full working order for 24 hours per day in compliance with the specification and shall include for 2 (two) operators per shift. Also included in the tendered rate shall be the cost of operation of the communication system between the traffic control devices.”

C3-60

Add the following payitems:

“Item Unit

B15.14 Amber flashing lights mounted on signs ...................................................... number (No)

The unit of measurement shall be the number of sets provided. The tendered rate shall include full compensation to provide, erect, operate for 24 hours per day and maintain a set of 2 (two) amber flashing lights per sign at each end of the traffic accommodation sections. It shall also include the provision of power to operate the lights, replacing bulbs as required and keeping the lenses clean and visible.

Item Unit

B15.15 Provision of traffic safety equipment for the engineer’s additional personnel and visitors

(a) Safety jackets ................................................................................................... number (No) (b) Hard hats .......................................................................................................... number (No) (c) Rotating amber flashing lights ........................................................................... number (No) (d) Magnetic strips .................................................................................................. number (No) The unit of measurement shall be the number of each item provided as specified, and approved by the engineer. The tendered rates for the various safety items shall include full compensation for provision thereof and maintenance in good working order.

Item Unit

B15.16 Provision of traffic safety officer

(a) Traffic safety officer(s) ................................................................................................ month The unit of measurement shall be the month (or part thereof) that the specified duties of the traffic safety officer are performed, irrespective of the number of traffic safety officers employed in any 24 hour day. The tendered rate shall include full compensation for the cost of the traffic safety officer(s) to conduct the duties as specified in sub-clause B1502(i) and includes the provision of his own vehicle, fuel, vehicle maintenance and insurance and the cost of the cellular telephone and all other incidentals related to the performance of his duties. (b) Traffic safety vehicle(s)..................................................................................... vehicle-month The unit of measurement shall be the month (or part thereof) that the safety vehicle is on site and in continuous use in the performance of traffic safety. The rate tendered shall include the provision of the traffic safety vehicle, fuel, vehicle maintenance and insurance costs, drivers, labourers and all other incidentals related to the performance of the traffic safety duties.

Item Unit

B15.17 Flashing illuminated arrow board .................................................................. number (No)

The unit of measurement shall be the number of flashing arrow boards provided and completely erected. The tendered rate shall include will compensation for providing, erecting, maintaining, relocating and re-erecting the flashing illuminated arrow board around the boundaries of the site, including the power

C3-61

supply for functioning of the lights. The lights shall be of the new LED type lights and shall be available for the entire period of the contract.

Item Unit

B15.18 Variable message signs mounted on trailers ............................................. month (month)

The unit of measurement shall be the number of signs provided for the time in months that the variable message sign (VMS) is operative on site. The tendered rate shall include full compensation for the provision of the VMS mounted on the trailer, the operation and maintenance thereof including frequent day and night inspections, protection against and repairs due to vandalism. Item Unit

B15.19 Provision of sandbags .....................................................................................Number (No)

The unit of measurement shall be the number of sandbags placed as shown on the drawings or as instructed by the engineer. The tendered rate shall include full compensation for all labour, plant, materials, transport and incidentals required to supply and place the sandbags filled with sand in accordance with the details shown on the relevant drawing or as per the instruction of the engineer. The tendered rate shall also include for all costs to relocate the sandbags whenever required, and the eventual removal of the sandbags from site. Sandbags used as ballast for portable stands of road signs and delineators shall be paid for under item B15.03 and not under this item. Add the following: "B1518 ACCOMMODATION OF PEDESTRIAN TRAFFIC The contractor shall pay specific attention to the accommodation of pedestrian traffic along the cross roads where the safety of pedestrians could be compromised as a result of the works. Where pedestrians have to cross the site, the contractor shall ensure that the pedestrians are safeguarded and shall be able to cross the site without being endangered. The pedestrians should not be able to enter areas where works are taking place. Should a walkway be required, it shall have a clear opening of at least 1,2 m wide and 2,1 m high and shall be uniformly illuminated at all times. The surface of the walkway shall be free from obstructions and shall be clearly signposted to guide the pedestrians towards the walkway. If steps are required to reach the level of the walkway, these shall comply with the OHS act and have proper handrails. No ramps shall be steeper than 1 in 8. Payment for compliance to this requirement shall be deemed to be included in the rates tendered for accommodation of traffic."

C3-62

SECTION B1600: OVERHAUL

B1601 SCOPE Insert in the second line between ‘’excavation” and “or stockpile” the following: “ …, crushing and screening,” B1602 DEFINITIONS (a) Overhaul material In paragraph (iv) insert “selected layers, ” before “subbase” in the first line. In paragraph (v) insert “ or layerworks” between “fill” and “elsewhere”. Insert the following as a final paragraph “Material procured from commercial sources shall not be regarded as overhaul material.” (b) Overhaul

Replace the sub-clause with:

“Regardless that the standard specification makes allowance for payment of restricted overhaul payment shall only be made for material hauled in excess of 1 kilometre. Overhaul shall be measured as the product of the volume of material hauled and the overhauled distance. (c) Haul distance

Add the following paragraph:

“Where material from one carriageway of a road is to be used on the opposite carriageway, the haul route shall be on the national route and crossing over at the nearest interchange. For this situation, the haul distance shall be measured from the position of obtaining the material, along the carriageway until centre point of the next interchange, and then back along the other carriageway. Only the distance on the national road will be measured and additional distances for travelling on the ramps, loops and cross roads will not be considered. Return travel may have to be along other roads but will not be measured separately. Existing municipal streets can be used for haul of material. (d) Free-haul distance

Replace the last sentence with:

“This distance shall be 1 kilometre in the case of all overhaul materials and this specification shall be deemed to have replaced the ‘free-haul’ distance in all other sections of the standard specifications.”

B1603 MEASUREMENT AND PAYMENT

Amend item 16.02 as follows:

“Item Unit

B16.02 Overhaul on material hauled in excess of 1 km ................. cubic metre-kilometre (m3km)”

Delete the first paragraph of the first set of notes and replace it with the following:

“Only ordinary overhaul for haul in excess of 1,0 km will apply to all overhaul materials. No restricted overhaul will be applicable on this contract.”

C3-63

Notes:

Add the following note:

“(5) Fill material supplied from commercial sources

Free-haul shall apply from the location of the commercial source up to the point of use on site.

C3-64

SECTION B1700: CLEARING AND GRUBBING B1701 SCOPE Add the following as a final paragraph: “Clearing and grubbing for the construction of site offices shall not be measured separately and shall be deemed to be included in the rates tendered for item B13.01.” B1702 DESCRIPTION OF WORK (c) Conservation of topsoil Delete the last sentence of the 1st paragraph and add the following: “The depth of topsoil removed shall be reliant on the terrain, suitability of material and topsoil requirements of the work. Generally the contractor will not be required to remove topsoil to more than an average depth of 150 mm unless approved by the engineer before commencing with topsoil removal from any particular area. B1703 EXECUTION OF THE WORK (a) Areas to be cleared and grubbed Add the following to the first paragraph: Areas to be cleared and grubbed may also include existing watercourses outside the limits of the road prism and the inlets and outlets of existing culverts, but excluding the inside of pipe and box culverts. The contractor shall note that the presence of a high water table or surface water may prohibit the use of conventional machines for this work." B1704 MEASUREMENT AND PAYMENT Item Unit B17.01: Clearing and grubbing ....................................................................................... Hectare (ha)

Add the following to the measurement and payment paragraphs: “All trees with girth not exceeding 1 m shall not be measured separately and payment for the removal

and grubbing of these trees shall be included under this item.

Clearing and grubbing for the construction of camp sites shall not be measured separately. Payment

shall be deemed as included in the rates tendered for item B13.01.” Add the following payment item: “Item Unit B17.07 Removal of topsoil and temporary stockpiling thereof in: (a) Topsoil In windrows alongside the work area ......................................... cubic metre (m3) (b) Topsoil in temporary stockpiles after loading material into trucks including 1.0km freehaul ....................................................... cubic metre (m

3)

(c) Topsoil in windrows on the edges of borrowpits or spoil areas……………………………………………………………………….cubic metre (m3) The unit of measurement for items (a) to (c) shall be the cubic metre of topsoil removed to windrow or temporary stockpile. The volume of topsoil removed shall be measured in cut, calculated from the

C3-65

difference in cross-sections of the natural ground level before the commencement of clearing to cross-sections taken after the removal of the topsoil. The contractor shall constantly liaise and agree with the engineer as to the depth of topsoil to be removed. Where, in the opinion of the engineer, material that would normally be classed as topsoil has also been excavated, the excavation shall be backfilled and compacted with selected material at the contractor’ expense. Should material that is deemed by the engineer not to be topsoil, be removed and stockpiled together with material classed as topsoil, the contractor shall be responsible for the removal of this unsuitable soil from the stockpile and the replacement of the quantity of topsoil contaminated by the unsuitable material at his cost. The quantity of topsoil to be replaced shall be determined by the engineer. The rates tendered shall include for the excavation of the topsoil and where required, the loading and hauling thereof to temporary stockpile as well as the maintenance of the stockpile until re-use of the material. The rates tendered shall also include for all supervision required to ensure that only topsoil is removed.

C3-66

SECTION B1800: DAYWORKS

B1801 SCOPE

This section covers the listing of daywork items in accordance with sub-clause 13.6 of the FIDIC Conditions of Contract, for the use in determining payment for work which cannot be quantified in specific units in the Pricing Schedule, or work ordered by the engineer during the construction period which was not foreseen at tender stage and for which no applicable rate exists in the Pricing Schedule.

B1802 ORDERING OF DAYWORK

No daywork shall be undertaken unless written authorisation has been obtained from the engineer.

B1803 MEASUREMENT AND PAYMENT

Item Unit

B18.01 Personnel

(a) Personnel during normal working hours

(i) Unskilled labour ....................................................................................................... hour (h) (ii) Semi-skilled labour .................................................................................................. hour (h) (iii) Skilled labour ........................................................................................................... hour (h) (iv) Ganger .................................................................................................................... hour (h) (v) Foreman ................................................................................................................. hour (h) (b) Personnel outside normal working hours

(i) Unskilled labour ....................................................................................................... hour (h) (ii) Semi-skilled labour .................................................................................................. hour (h) (iii) Skilled labour ........................................................................................................... hour (h) (iv) Ganger .................................................................................................................... hour (h) (v) Foreman ................................................................................................................. hour (h) (c) Sundays and public holidays

(i) Unskilled labour ....................................................................................................... hour (h) (ii) Semi-skilled labour .................................................................................................. hour (h) (iii) Skilled labour ........................................................................................................... hour (h) (iv) Ganger .................................................................................................................... hour (h) (v) Foreman ................................................................................................................. hour (h)

Item Unit

B18.02 Equipment

(1) Bulldozer (170 kW) .................................................................................................. hour (h) (2) Wheel loader (82 kW) .............................................................................................. hour (h) (3) Crawler excavator (96 kW) ....................................................................................... hour (h) (4) Backhoe loader (52 kW) .......................................................................................... hour (h) (5) Grader 140G (or equivalent) ..................................................................................... hour (h) (6) 10 000 – 14 000 ℓ water cart .................................................................................... hour (h) (7) Articulated dump truck (130 kW) .............................................................................. hour (h) (8) Tip truck 10m

3 ......................................................................................................... hour (h)

(9) Tip truck 6m3 ............................................................................................................ hour (h)

(10) Flatbed truck with 7 ton hydraulic crane ................................................................... hour (h) (11) Vibrating plate compactor (5 kW, 124 kg) ................................................................ hour (h) (12) Tandem vibrating roller (23 kW, 1.8 ton) ................................................................... hour (h) (13) Single drum self-propelled vibrating roller (17 ton) ................................................... hour (h)

C3-67

(14) Pneumatic tyre roller (27 ton) ................................................................................... hour (h) (15) Portable diesel compressor 175 cfm with 1 jackhammer and 30 m hose .................. hour (h) (16) Portable diesel compressor 450 cfm with 3 jackhammers and 90 m hose ................. hour (h) (17) Flat truck (2 – 3 ton) ................................................................................................ hour (h) (18) Wirtgen deep in-situ recycler ................................................................................... hour (h) (19) 1 m wide milling machine.......................................................................................... hour (h) (20) 2 m wide milling machine.......................................................................................... hour (h) (21) 4” water pump .......................................................................................................... hour (h) (22) 6” water pump .......................................................................................................... hour (h) (23) Wacker rammer (jumping jack) .................................................................................. hour (h) (24) Pedestrian double drum roller (650 mm wide) ............................................................ hour (h) (25) Pad foot roller (10 ton, 97 kW) ................................................................................... hour (h)

Item Unit

B18.03 Materials

(a) Procurement of materials ................................................................... provisional (prov) sum (b) Contractor's handling costs, profit and all other charges in respect of

sub-item B1803(a) ........................................................................................ percentage (%)

Item Unit

B18.04 Transport

(a) Mini bus (16 seater) ........................................................................................ kilometre (km) (b) Bus (60 seater)................................................................................................ kilometre (km) (c) LDV – 1 ton load capacity with lockable canopy ................................................kilometre (km) The unit of measurement for items B18.01 and B18.02 shall be the hour for the item of equipment or personnel. Non-working hours for transport breakdown, lack of operator of any other reason shall not be measured. The time shall be taken from the time that the personnel and/or equipment depart until return. Measurement shall only be for work instructed and directed by the engineer, where the engineer considers no other appropriate rate is applicable in the Pricing Schedule. Prior to the commencement of any work by the personnel described under item B18.01 the contractor must obtain written consent from the engineer regarding their classification in terms of "unskilled", semi-skilled" and "skilled" personnel. The tendered rates for labour under B18.01 shall include full compensation to cover overhead charges and profit, leave pay, bonuses, subsistence, allowances, employer's contributions, additional payment for overtime where applicable, insurances, housing, site supervision, use of small hand tools and appliances, non-mechanical plant and equipment and consumable stores, for all administrative, supervisory, operative and contingent costs, relating to the supply of personnel. The tendered rates for plant for item B18.02 shall be an all-inclusive hire charge for the use of the vehicle and driver or plant/equipment and operator and shall apply only to vehicles plant and equipment nominated in writing by the engineer, for all administrative, supervisory, operative and contingent cost, and profit relating to the running of the plant. The unit of measurement for subitem B18.03(a) shall be the amounts actually paid for the procurement of materials to be purchased and shall be made in accordance with the provision of the FIDIC Conditions of Contract. Only the actual quantities of materials used, as verified by the engineer, shall be paid for. The percentage tendered for subitem B18.03(b) shall be the percentage of the amounts actually paid for the procurement of materials as ordered under subitem B18.03(a) and shall be in full and final compensation in respect of the contractor's handling costs, profit and all other charges in connection with the procurement and supply of the materials to the point of usage.

C3-68

The unit of measurement for item B18.04 shall be the kilometre distance that the vehicle travelled for transporting personnel. All travelling shall be approved by the engineer. The tendered rate for item B18.04 shall include full compensation for the cost of the vehicle including fuel, maintenance depreciation and running costs. The above mentioned tendered rates shall be full compensation for the various items as specified and no further profit shall be paid.

C3-69

COLTO SERIES 2000: DRAINAGE SECTION B2100: DRAINS B2101 SCOPE Amend the first paragraph to read: “This section covers all work both rehabilitative and new work in connection with the excavation and construction of open drains, subsoil drainage and banks and dykes at the locations and to the sizes, shapes, grades and dimensions as shown on the drawings or as directed by the engineers, and the test flushing of subsoil drains.” Add the following: "This section also covers the cleaning of waterways and unless inconsistent with the context, the provisions of this section with regard to open drains shall also apply mutatis mutandis to waterways."

Delete the last paragraph. The cleaning of hydraulic structures shall be done in accordance with the requirements of section 2200.

B2102 OPEN DRAINS

Add the following to subclause (b):

"In cuttings any excavation of newly constructed pavement layers, or the removal of surplus material stemming from the construction of the pavement layers, required to form and shape side drains which are to be concrete-lined, shall not be measured and paid for under item B21.01 but shall be deemed to be included in the rate tendered for item 23.07: Trimming of excavations for concrete-lined open drains." In the first paragraph of subclause (c) replace "constructed" with "excavated and trimmed."

Add the following at the end of the first paragraph in subclause (c):

"Opening and clearing of open side drains must be completed at least prior to the construction of the subbase, and the contractor will submit proof to the engineer that the open drains are formed to the correct measurements as indicated on the drawings or as specified. Note that this requirement is also applicable to the trimming of the cut and fill slopes as indicated in subclause B3308(d), and no construction of subbase will be allowed prior to the approval of the engineer.” Delete subclause (g) which is covered under Section 2200.

B2103 BANKS AND DYKES

Add the following:

"Catchwater berms along the top of cuttings shall be constructed to the dimensions shown on the drawings. Berms shall, where possible, be formed by heaping material from the cut side to form the required shape of the catchwater berm without disturbing the in situ soil and growth on the upper side of the berm so as to minimize the potential for erosion taking place."

B2104 SUBSOIL DRAINAGE

(a) Materials

(i) Pipes

Amend this sub-clause by adding the following to the end of the third paragraph:

“(category-heavy duty) or SABS 1601 (stiffness class 350) The pipes to be used shall be either slotted u PVC pipes or perforated HDP pressure pipes, 150 mm ID.”

C3-70

Pipes must be stored in a shaded area without exposure to direct sunlight. (ii) Natural permeable material

Add the following to the 3rd paragraph:

“The crushed stone shall be coarse (20mm nominal) and shall be washed clean of all fines”. (iii) Synthetic-fibre filter fabric

Under item (4) Selection, of this sub-clause, replace the 1st paragraph with the following:

“The filter-fabric used for subsoil drains shall be grade 2 and shall satisfy the criteria for a grade 2 geotextile as given in table 2104/2.” Add the following item:

“(5) Testing

General:

The tests to be carried out on geo-textiles relate to the material and the method of manufacture and are mainly to ascertain that the correct grade of geo-textile is supplied, and that the material is equivalent in quality to that selected and specified for use in the works. The contractor will be required, on the request of the engineer, to submit a certificate by an approved laboratory to prove compliance with specified tests as stated in B8114 without additional cost to the employer. (b) Construction of subsoil drainage systems

(i) With natural permeable material

Add the following to the fifth paragraph:

“Perforated pipes shall be laid with the perforations in the 4 to 8 o’clock position.” Add the following sub-clause:

“(v) Proving of pipes in subsoil drainage systems

On completion of the pipe laying and prior to backfilling, all pipe joints shall be surveyed as proof of their installation to line and level. After backfilling the pipes shall be proved by pulling through a cylindrical cleaning brush followed by a wooden mandrill ± 400 mm long and 5 mm in diameter less than the bore of the pipe. Proving of pipes shall not be paid for separately and the cost thereof shall be deemed to be included in the rate tendered for laying the pipe.”

B2106 MANHOLES, OUTLET STRUCTURES AND CLEANING EYES

Insert the following paragraph after the last paragraph:

"The end of each subsoil outlet shall be marked with a 300 mm x 300 mm perspex plate fixed to the top portion of the fence line opposite each subsoil outlet structure in accordance with the details on the drawings.”

B2107 MEASUREMENT AND PAYMENT

Item Unit

B21.01 Excavation for open drains

Amend the third paragraph to read as follows:

"The tendered rates shall include full compensation for the excavation, trimming and finishing-off of the open drain to the required lines, levels and grades and the disposal of the material as directed.”

C3-71

Item Unit

B21.04 Impermeable backfilling to subsoil drainage systems

Add the following sub-items:

“(a) Crushed G5 quality material stabilised with 4% stabilising agent ................ cubic metre (m3)” Amend pay items B21.06 to read as follows:

“B21.06 Natural permeable material in subsoil drainage systems (washed crushed stone)”.

Add the following sub-item:

“(b) Crushed stone obtained from commercial sources (20 mm nominal size) Grade II ............................................................................................. cubic metre (m3)”

Item Unit

B21.08 Pipes in subsoil drainage systems:

Add the following subitem:

“(e) uPVC pipes complying with SABS 1601 or HDPE pipes complying with DIN 4262 as specified in subclause B2104(a)(i) complete with couplings

(i) 150mm internal diameter perforated .................................................................metre (m) (ii) 150mm internal diameter unperforated .......................................................... metre (m)”

Amend pay item B21.12 to read as follows:

“Item Unit

B21.12 Concrete outlet structures, junction boxes, and cleaning eyes for subsoil drainage systems (including formwork): ......................................... number (No)

Add the following:

“The tendered rate shall also include full compensation for procuring and finishing the galvanised woven wire mesh, cutting, waste, installing the wire mesh at outlets and keeping the wire mesh in the pipe openings clean for the duration of the contract period.”

Item Unit

B21.17 Test flushing of pipe subsoil drains ................................................................ number (No)

Add the following to the measurement paragraph:

“A test section shall be defined to be from the start to the outlet end of a subsoil drain irrespective of its

length.”

Item Unit

B21.19 Selected backfill material under concrete-lined side drain

compacted to 93% of modified AASHTO density ................................... cubic metre (m3)”

Change density to “95%”

C3-72

Add the following payment items:

“Item Unit

B21.20 Subsoil outlet marker board

(a) Galvanised supports and plates (drawing reference).......................................... number (No)

The unit of measurement is the number of 300 mm x 300 mm galvanised plate subsoil outlet marker boards at each subsoil outlet structure in accordance with the details on the drawings. The tendered rate shall include full compensation for all labour and material, painting, lettering, posts, excavation, backfilling with soilcrete, etc. as may be necessary for completing the work in accordance with the details shown on the drawings.

Item Unit

B21.21 Constructing 150 mm internal diameter perforated subsoil drainage pipe into stormwater structure ......................................................... number (No)

The unit of measurement shall be the number of connections to be made. The tendered rate shall include full compensation for the installation of the subsoil drain into any stormwater structure complete."

C3-73

SECTION B2200: PREFABRICATED CULVERTS

B2201 SCOPE

Add the following:

“All work in connection with the cleaning of existing culverts and other closed conduits such as stormwater ducts, tremies and service ducts, together with inlet and outlet structures, manholes and other appurtenant structures, are also covered under this section. The attention of the contractor is drawn to the fact that information given on the drawings, long sections and drainage schedules may be altered to suit actual site conditions. Culverts shall only be constructed once the information on the drawings has been confirmed or altered by the engineer. Prefabricated units shall thus only be ordered once actual measurements of length have been determined on site and confirmed by the engineer."

B2203 MATERIALS

(b) Portal and rectangular prefabricated concrete culvert units

Replace this sub-clause with the following:

"Precast concrete units shall comply with the requirements of the latest SANS 986:2006 specification. Prior to the manufacture of any units the manufacturer shall submit his quality plan to be approved by the engineer before delivery of any units to site. As part of the quality plan submitted for approval copies of calibration certificates of both gauges used for proof loads and cover meters used at the factory shall be supplied to the engineer. The originals of these certificates shall at all stages also be available for inspection at the factory premises. The manufacturer shall check each precast unit for cover compliance, and random checking of units shall not be permitted. The engineer's representative may visit the factory at any stage to ascertain adherence to the quality plan as well as to check covers before delivery to site. Any substandard cover shall result in the batch being rejected. Should the manufacturer not be adhering to their quality plan the engineer may exercise the right to reject the use of products from the manufacturer concerned. The employer shall also be informed in all such cases. For durability requirements due to the reduced cover provided for pre-cast culverts all durability testing shall be done in accordance to clause B6404(h) shall fall within the severe category. For units within the 5 km zone from the coast the very severe category shall be used and increased cover shall be as specified by the engineer." Add the following subclause:

"(j) Steel reinforcement

Steel reinforcement shall comply with the requirements of section 6300 of the standard specifications."

B2204 CONSTRUCTION METHODS

Replace the 2nd paragraph with the following:

"Culverts shall generally be lengthened according to the "embankment method". The contractor shall at all times ensure that the existing drainage is at all times maintained and any damage caused as a result of blocked culverts during construction shall be repaired at the contractor's expense. When culverts are constructed by the embankment method the embankment shall be constructed as shown on the drawings using material of at least upper selected subgrade quality. All material in this embankment fill which is within the 1:1 fill slope as shown on the drawings and within 200 mm over the top of the culvert, shall be classified as backfilling of prefabricated culverts as specified in clause B2211 and shall be paid for under item 22.02." New culverts shall generally be constructed according to the “trench method” unless otherwise indicated on the drawings.

C3-74

The bottom of the excavation for culverts that are to be replaced or lengthened shall be inspected by the engineer prior to the placing of the bedding material. If the material is found to be suitable, it shall be ripped to a depth of 150 mm below the bottom of bedding level and re-compacted to at least 93% Mod. AASHTO density or 100% of Mod. AASHTO density in case of sand. Where the material is found to be unsuitable, it shall be removed to a depth specified by the engineer and then replaced with selected material compacted to at least 93% Mod. AASHTO density in layers not exceeding 150 mm thickness."

B2207 UNSUITABLE FOUNDING CONDITIONS

Add the following to the first paragraph:

"Such material shall be classed as backfill for purposes of payment." Add the following:

"Unsuitable material excavated by the contractor on the engineer's instructions shall be measured under item B22.01. The backfilling of the excavated material below the bottom of the culvert shall be termed "foundation fill" as specified in clause 6109 and shall be measured under item 61.08."

B2211 BACKFILLING OF PREFABRICATED CULVERTS

Amend second paragraph to read as follows:

"The material used for the backfilling alongside the culvert shall be a stiff mixture of soil cement containing 3% cement mixed with selected material of at least G7 quality. Where the excavated material is not of adequate quality, selected material shall be imported for this purpose from elsewhere on site. The material placed over the top of the culvert shall be of the same quality as that of the road pavement at a similar depth but in any event of at least G7 quality."

B2212 INLET AND OUTLET STRUCTURES, CATCHPITS AND MANHOLES

Add the following clauses:

"(j) Building-in pipework

Pipework shall be built into concrete as shown on the drawings. The pipework shall be set into exact position in the shutters before the concrete is placed and the concrete thoroughly compacted and worked around the pipework. Where prefabricated elements are used, due provision must be made for the various pipes at a specific junction. The joint between the old and fresh concrete shall be made in accordance with clause 6408 Construction joints. Where pipes enter brickwork they shall be caulked into the wall and rendered with mortar.”

B2215 SERVICE DUCTS

Replace all paragraphs with the following:

“Provision for service ducts is made under sections F and G”

Add the following sub-items

"B2219 EXCAVATIONS IN CLOSE PROXIMITY OF EXISTING SERVICES

The contractor shall take the necessary precautions as specified in clause 1202 when excavating in close proximity to existing services. Payment for accommodating existing services shall be made as allowed for in the schedule of quantities according to the relative location and type of service encountered during trench excavations. Once a new service has been installed and approved it will be regarded as an existing service. An existing service shall be regarded as intersecting a trench where the angle between the centerline of the service and that of the trench (measured in plan) is between 45° and 90°.

C3-75

An existing service shall be regarded as adjoining a trench where:

(i) the angle between the centerline of the service and that of the trench (measured in plan) is between 0° (parallel) and 45°, and

(ii) the nearer side of the bottom of the specified trench lies at least partially between a vertical

plane passing through the axis of the service and a plane lying at an angle of 45° below the horizontal and passing through the axis of the service.

B2220 CLEANING HYDRAULIC STRUCTURES

All existing culverts indicated by the engineer shall be cleaned. The contractor shall remove all undesirable materials, such as amongst others all silt, sediment, driftwood, debris and rubble that have accumulated in and around the culvert inlet and outlet structures and in the culvert barrels. The cleaning shall preferably be done by means of hand tools in order to prevent damage to the structure or existing services crossing the road reserve through hydraulic structures. Any damage to a structure or service caused by the contractor shall be repaired at his expense to the satisfaction of the engineer. Sections of the existing stormwater system may be completely blocked and will have to be cleaned using high pressure jetting equipment (The pressure jetting equipment must be able to deliver 240 litre/minute at 14 000 kPa) and suitable mud pumps to thoroughly clean the pipe of all rubbish, sand, silt and other matter. Such sections will be determined on site by the engineer.” Amend item “B2218 MEASUREMENT AND PAYMENT” as follows:

“B2221 MEASUREMENT AND PAYMENT”

Item Unit

B22.01 Excavation:

Add the following sub-items:

(c) Extra over subitem 22.01(a) for additional excavation required by the engineer after the excavation has been completed ....................................... cubic metre (m

3)

(d) Extra over subitem 22.01(a) for excavating material by hand irrespective of depth (when agreed previously with the engineer) .................. cubic metre (m3)

If, after a trench excavation has been completed, cleaned and trimmed ready for culvert laying to commence, the engineer orders further excavations to be made on account of changed dimensions and/or unsuitable founding conditions, an extra over payment (subitem B22.01(c)) on the additional excavation measured for payment shall be payable in full compensation for any incidentals to the contractor over and above the normal excavation costs.

The tendered rate for subitem (d) shall include full compensation for excavation by hand ordered by the engineer, in accordance with the method described in clause B2219, and shall include all the requirements as for payment item 22.26 except for backfilling and compaction which will be measured and paid for under item 22.02. Note that this item will not be applicable for normal cleaning of the bottom of excavations which is part of the normal excavations for structures and done by hand held equipment."

Item Unit

B22.02 Backfilling:

Add the following sub-item:

“(d) Using material from commercial source ........................................................ cubic metre (m3)

C3-76

Amend the payitem to read as follows:

“B22.12 Removing existing concrete or brickwork”

Add the following subitem:

“(c) Brickwork .................................................................................................... cubic metre (m³)” In the first paragraph add “or brickwork” after “concrete”.

Insert the following after the word “demolition” in the 2nd paragraph of the payment description:

“... to a specified maximum size of 300 mm x 300 mm”

Item Unit

B22.17 Manholes, catchpits, inlet and outlet structures complete:

Add “, shuttering and reinforcement” in the first payment paragraph after “grids …”.

"Item Unit

B22.23 Service ducts (state type) ......................................................................................metre (m) The unit of measurement shall be the metre of individual service duct laid. The tendered rates shall include for procuring and providing and laying the pipes, including bedding material, end stoppers, draw wires and complete installation, but shall exclude encasing with concrete, excavation and backfilling which shall be measured for payment under the appropriate items of payment of this section.” The tendered rates shall include for procuring, providing and laying the pipes, including bedding material, end stoppers, draw wires and complete installation, but shall exclude encasing with concrete, excavation and backfilling which shall be measured for payment under the appropriate items of payment of this section." Add the following new payment items

“Item Unit

B22.29 Breaking into existing drainage structures and building in pipes or culverts of the following size (pipe diameter and/or culvert size to be stated) .................................................................................................... number (No)

The unit of measurement is the number of each type and size of existing drainage structure that is being modified as shown on the drawings or as instructed by the engineer. The tendered rates shall include full compensation for providing all labour, constructional plant and materials required, for all excavation, breaking into existing drainage structures, building into the newly formed accesses, sealing around the edges and making the joints watertight, breaking out existing benching and channelling where required and reconstructing them complete with granolithic rendering to suit the new drainage arrangement, backfilling and compacting to at least 93% of modified AASHTO density and dealing with the flows in the existing structures.

Item Unit

B22.30 Accommodating existing services

(a) Existing services intersecting a trench (state type and size) ................................ number (No) (b) Existing services adjoining a trench (state type and size) .........................................metre (m) For subitem (a) the unit of measurement shall be the number of each type of service that intersects a trench and for subitem (b) the unit of measurement shall be the metre length of service within the minimum base width of the trench as defined in clause B2219. Where services are grouped so that

C3-77

they can be contained within a horizontal dimension of 200 mm measured at right angles to the axis of the services, they will be measured as one unit. The tendered rates shall include full compensation for the additional costs of:

(i) the additional care required during excavation and backfilling in the presence of the service including excavation by hand where necessary;

(ii) protecting and maintaining such service in operation by means of temporary supports or

shoring, as necessary; (iii) delays and disruptions to the progress of the work as a result of the presence of the service. (iv) any repairs to the service due to damage caused by the contractor.

Separate payment for shoring will be made where, in the opinion of the engineer, the side of the trench is likely to collapse because of the existence of the service.

Item Unit

B22.31 Cleaning of the stormwater system by high pressure jetting equipment (diameter indicated) ..............................................................................metre (m) The unit of measurement shall be the metre of stormwater pipe cleaned as measured between the centres of manholes and/or catchpits. The tendered rate shall include full compensation for providing the required plant, equipment and tools and for all work required to clean the existing stormwater pipes, manholes and catchpits and for disposing of the resultant materials including transport for a free-haul distance of 1,0 km, all as specified.

Item Unit

B22.32 Cleaning hydraulic structures:

(a) Pipes with internal diameter not exceeding 900 mm...................................... cubic metre (m3) (b) Manholes, inlet and outlet structures............................................................. cubic metre (m3) The unit of measurement shall be the cubic metre of material removed from hydraulic structures (culverts) or median inlets, where so instructed by the engineer. The tendered rates shall include full compensation for all work and incidentals necessary for removing all undesirable materials from hydraulic structures, for transporting an unlimited free-haul distance and disposing of the material as directed.”

C3-78

SECTION B2300: CONCRETE KERBING, CONCRETE CHANNELLING, CHUTES AND DOWNPIPES AND CONCRETE LINING FOR OPEN DRAINS

B2301 SCOPE

Add the following to this clause:

“This section also covers the replacement of damaged concrete kerbing, channelling and lining.”

B2302 MATERIALS

(d) Bedding material

Add the following:

"The material on which concrete kerbs and channels are to be bedded shall consist of a class 15/13 semi-dry porous concrete mix whilst a low slump nominal 1:4:4 concrete mix complying with the requirements of section 6400 shall be used for support (haunching) behind the kerbs." (b) Prefabricated concrete kerbing and channelling

Add the following:

"A 10 mm wide joint formed in inert filler shall be provided every 20 metres through the kerbing and channelling. The colour of the filler shall match the colour of the kerbing. (j) Protection

Add the following to the first paragraph:

"Units which are found to be chipped on completion of the work shall either be removed and replaced with unchipped units if badly chipped or, if lightly chipped, repaired using epoxy resin mortar patching all as agreed with the engineer."

B2304 CONSTRUCTION

(b) Prefabricated concrete kerbing and channelling

Amend the end of the 2nd paragraph to read as follows:

“... road junctions, where the kerb units shall be 0,5 m in length for curve radii between 5,0 m and 20,0 m and 0,3 m in length for curve radii between 1,0 m and 5,0 m. For curves with a radius less than one metre the kerbs shall be cast in situ. Any associated prefabricated concrete channelling units shall also comply with the above requirements." Add the following:

"A 10 mm wide joint formed in inert filler shall be provided every 20 metres through the kerbing and channelling. The colour of the filler shall match the colour of the kerbing. (j) Protection

Add the following to the first paragraph:

"Units which are found to be chipped on completion of the work shall either be removed and replaced with unchipped units if badly chipped or, if lightly chipped, repaired using epoxy resin patching all as agreed with the engineer." Add the following sub-clause:

“(l) Demolition of existing kerb and channel and concrete lined drains

Where shown on the drawings and/or indicated by the engineer, the existing kerb and channel and concrete lined drains shall be demolished to a specified maximum size, removed and transported to an approved spoil site as provided by the contractor.”

C3-79

B2307 MEASUREMENT AND PAYMENT

"Item Unit

B23.12 Steel reinforcement

Add the following paragraph:

“Where hot-dip galvanized steel reinforcement is indicated, the additional costs associated with the hot-dip galvanizing shall be included in the rate”.

Amend item B23.14 as follows:

"Item Unit

B23.14 Cutting bituminous surfacing and pavement layers for concrete kerbing, channelling or concrete-lined drains (specify type and depth)”

Delete in line 3 of the 1st paragraph of the payment item description:

“irrespective of the depth cut”. Add the following payment items:

“Item Unit

B23.16 Demolition and removal of existing kerbs and/or channel (specify maximum size) ........................................................................................... cubic metre (m

3)

The unit of measurement shall be the cubic metre (m3) of material measured in situ before demolition

or excavation. The tendered rate shall include full compensation for breaking up the existing kerbs and/or channel to a specified maximum size, of 300 mm x 300 mm removal from site to an approved spoil site, clearing the excavation of all loose debris and to backfill the excavation where new concrete is not required. Overhaul will be paid under item B16.02.

Item Unit

B23.17 Extra over items 23.01 and 23.02 for concrete kerbing or concrete kerbing and channelling on curves

(a) on curves of radii more than or equal to 5,0 m but less than 20,0 m ....................... metre (m) (b) on curves with radii more than or equal to 1,0 m but less than 5,0 m ...................... metre (m) (c) on curves with radii less than 1,0 m ....................................................................... metre (m) The unit of measurement shall be the metre of concrete kerbing or kerbing and channelling combination complete as constructed, measured along the front face of the kerb. The tendered rate shall include full compensation for the additional costs involved in setting out, preparing and constructing as specified on curves with radii less than 20 m. Item Unit

B23.18 Extra over item 23.02 for drop kerbs at pedestrian crossings and driveways...............................................................................................................metre (m)

The unit of measurement shall be the meter of drop kerb installed measured from the starting point where the first kerb is tapering down to the end where the kerb is at its correct level.

The tendered rate is and extra over for the extra work involved in having to excavate deeper, and shall include full compensation for all the labour, excavation, materials and backfill to complete the drawings as specified.

C3-80

COLTO SERIES 3000: EARTHWORKS AND PAVEMENT LAYERS OF GRAVEL OR CRUSHED STONE

SECTION B3200: SELECTION, STOCKPILING AND BREAKING DOWN THE MATERIALS FROM BORROW PITS, CUTTINGS AND EXISTING PAVEMENT LAYERS AND PLACING AND COMPACTING THE GRAVEL LAYERS

B3201 SCOPE

In the 3rd paragraph insert the following before the word “respectively”:

“, or procured from commercial sources,”

B3203 STOCKPILING THE MATERIAL

In the third paragraph, replace the second and third sentences with:

“Before any stockpiling may be done the area shall be cleared of topsoil to a sufficient depth that will subsequently allow for the complete rehabilitation of the site with a cover of topsoil that does not exceed 100 mm in depth and is not less than 75 mm in depth. If there is insufficient topsoil; the contractor shall acquire whatever balance is needed to rehabilitate the area at his own cost. No make-up topsoil shall be taken from the road reserve. The topsoil shall be stored in an area that shall not be affected by construction activities nor impede the natural flow of water. The topsoil so windrowed or stockpiled and its surrounds shall be kept free of all undesirable vegetation (refer B5808(f)). The contractor shall not commence his stockpiling activities without prior written approval from the engineer that the site has been adequately prepared. Stockpile sites shall be graded smooth with an adequate slope to ensure proper drainage. The surface shall be watered and compacted to a depth of at least 150 mm and to a density of 90% of modified AASHTO density. The compacted surface shall be firm. Upon completion, the surface shall be swept clean. Stockpile sites shall be large enough to allow the different types of material to be stockpiled without overlapping or exceeding the limits of the prepared site. Enlargement of the stockpile sites after the stockpiles have been placed will not be permitted without the engineer's approval. After the stockpiled material has been removed, the site shall be reinstated as closely as possible to its original condition by ripping of the affected areas, re-landscaping if necessary, re-instatement of the topsoil and re-vegetation.” Insert the following paragraph before the last paragraph:

“All stockpiles shall be tested and the material approved for use by the engineer before the material is hauled to the road.”

B3204 BREAKING-DOWN THE MATERIAL

(a) Initial breaking-down of the material in cuttings, borrow pits and existing pavement layers

Insert the following subheading before the first paragraph:

“(i) Cuttings and borrow pits” Add the following to the first paragraph as a continuation of the sentence:

“or bladed in place in a side cut to fill operation.” Amend the table of maximum sizes (second paragraph) to read as follows:

“Rock fills 750 mm maximum dimension Normal fills 500 mm maximum dimension

C3-81

Widening of fills 250 mm maximum dimension Pavement layers 150 mm maximum dimension” Add the following after the third paragraph:

“Rock fills will not be permitted for the widening of existing fills. and” Add the following at the end of the clause:

“(ii) Existing pavement layers

The breaking down of existing pavement layers shall be subject to the provisions of clause B3805(a).” (b) Further breaking-down of pavement material

Add the following before the first paragraph:

“In view of the restricted working space in half-width construction, the contractor shall be well advised to ensure that all fill and layer material brought onto the road complies with the maximum aggregate sizes specified in subclause B3204(a) and B3402(a) respectively and that no further breaking down is thus required. ” Add the following at the end of the 1st paragraph:

“This shall apply mutates mutandis for in situ recycling of pavement layers.”

B3206 CONTROLLING THE MOISTURE CONTENT OF MATERIALS

Add the following:

“The time required for doing work to accelerate the drying out of wet material or for dealing with wet material as described in subclauses (a) to (c) above, shall not be regarded as part of a delay caused by inclement weather in terms of clause B1215. ”

B3207 LAYER THICKNESSES AND SPREADING THE MATERIALS

(a) Fills

Replace the last sentence of the first paragraph with the following:

“The maximum layer thickness (after compaction) permitted shall be 300 mm and the minimum layer thickness shall be 100 mm.”

B3208 PLACING AND COMPACTING THE MATERIALS IN LAYER THICKNESSES 0F 200MM AND LESS AFTER COMPACTION

Add the following before the 1st paragraph:

“In the case of in situ reconstruction of existing pavement layers, the contents of this clause shall apply regardless of the layer thickness after compaction.” (c) In place reworking of pavement layers

Add the following paragraphs:

“Where the new layer is to be constructed by in situ recycling one or more existing pavement layers, with or without the addition of extra material, the preparation procedures of subclause B3403 shall apply so as to achieve a uniform layer. The recycled layer shall not contain more than 40% of recycled asphalt or bituminous layers (RAP) measured as after compaction thickness of the designed layer. ”

C3-82

Add the following before the last sentence:

“When one or more of the underlying layers requires reconstruction, the upper layers shall first be scarified and windrowed or removed to temporary stockpile. The reprocessing of a layer may, if instructed by the engineer, also include the addition of chemical stabilizers. ” Add the following new sub-clauses:

“(d) Construction joints in new layers

Where construction joints are formed between adjacent portions of the same layer the following conditions shall apply:

(i) Joints shall be either at right angles or parallel to the road centreline. (ii) Joints in successive layers shall not correspond with those of the layers below and shall be offset at a minimum of 150 mm or as indicated on the drawings. (iii) The need for and positions of all proposed joints shall be approved by the engineer prior to the commencement of work. (iv) The material in and adjacent to the joint shall be evenly graded and compacted to the density required for the layer. (v) The completed base layer when tested along and across the joint shall comply with the construction tolerances as specified in clause B3405. (vi) Construction considerations:

(1) First half construction

The contractor shall ensure that for each layer the specified density is achieved as near as possible to the inner edge of the half-width layer. The sequence and method of spreading and shaping the layer material shall be such that excessive material is not bladed over the inner edge. Where, in the opinion of the engineer, excessive loose material has accumulated, for whatever reason, in the limited working space in between the working area and traffic deviation, and which may constitute a traffic hazard or interfere with drainage, the contractor shall remove and dispose of such material and no additional payment shall be made for such work. (2) Second half construction

Before processing the first layer, the contractor shall remove all loose material and trim the joint face to the dimensions shown on the drawing or directed by the engineer. The trimmed joint face shall be fully compacted and free from loose material and throughout phase 2 it shall be protected and maintained to this standard. Mixing of the layer material shall be done away from the joint so as to keep the joint clean and not to damage it with the grader blade. When the mixed layer material is ready for spreading and compaction, water shall be applied to the joint face until the in situ material is at or just above optimum moisture content and this shall be repeated as often as may be necessary in order to keep it in that condition. When spreading the material the contractor shall take care not to deposit segregated material against the joint face. When shaping the base layer the contractor shall ensure that the cross-fall and level of the layer tie in with that of the adjacent previously completed layer every step of the way. (e) Joints with existing roads

Where a joint must be formed between a new road pavement and an existing road i.e. at tie-ins the following conditions shall apply: (i) The existing pavement layers shall be excavated and stepped back as shown on the drawings or instructed by the engineer. The engineer may instruct that an exposed layer be skimmed to provide for the required thickness of the new layer that will overlay it.

C3-83

(ii) The existing bituminous surfacing layer shall be saw-cutted in a neat straight line. The contractor shall take care not to damage the edge of the surfacing and if so, shall re-cut the surfacing at own cost just prior to laying the new surfacing up to it. It is therefore advisable that the surfacing initially be cut with paving breakers allowing for a further cutback by saw.

(iii) Preparation and treatment of the existing layer joint face shall be as described in subclause (d)(vi)(2) above.”

B3212 MEASUREMENT AND PAYMENT

In the introductory paragraph replace the comma after “below” in the penultimate line with a full stop and delete the remainder of the paragraph.

Add the following as a 2nd paragraph:

“Separate payment for work applicable to these payment items shall be made under the relevant sections in these specifications pertaining to the construction material required. For example, material procured from borrow that is crushed and screened for use in selected and sub-base layers shall be measured for payment under Section 3400: PAVEMENT LAYERS OF GRAVEL MATERIAL as: 34/32.01(d) and 34/32.03(d) etc., whichever is the relevant pairing of pay items under sections 3200/3400.”

Item Unit

B32.06 Stockpiling of material ............................................................................... cubic metre (m3)

Add the following to the first paragraph as a continuation of the sentence:

“and finally used in construction, measured in place after compaction.” Replace the second paragraph with the following:

“The tendered rate shall include full compensation for off-loading and, if necessary, for spreading the material, and for loading when required for use. It shall also include for any wastage in the stockpile. Payment for preparing stockpile sites shall be made under section 3800.”

C3-84

SECTION B3300: MASS EARTHWORKS

B3301 SCOPE

Add the following:

“It also covers the construction and compaction of fills with materials obtained from existing pavement layers and commercial sources. The scope includes the work and constraints as described in Part C4: Site Information”B3302

B3302 MATERIALS

(a) Roadbed and cut

Substitute “are shown on the drawings” in the third line with “are contained in Volume 6: Materials Investigation and Utilization.”

(b) Fill

(iii) Compaction requirements, minimum in situ dry density

Add the following after the second paragraph:

“Notwithstanding the above criteria, the compactibility of the material shall be assessed by means of trials and if it is found that it compacts readily to a density of 100% of modified AASHTO, it shall henceforth be classified as sand for the purposes of the density specification and be compacted to 100% of modified AASHTO.” Add the following under item (iv):

“The maximum swell at 100% Mod AASHTO compaction shall not be more than 2%.”

B3303 CLASSIFICATION OF CUT AND BORROW EXCAVATION

Classification of cut and borrow excavation shall be revised as follows:

“(a) Classes of excavation

(ii) Intermediate excavation

No distinction shall be made between soft and intermediate excavation, and all intermediate excavation shall be classified and measured as soft excavation.”

B3305 TREATING THE ROADBED

(a) Removing unsuitable material

Replace “or” in the eight line of the third paragraph with “and”

(d) In situ treatment of roadbed

Add the following to the first paragraph:

“In the case of medium to hard rock formations no in situ treatment as described in this subclause is required. Blasting and excavation shall be carried out so as to finish up as near to the design level as possible with minimal over break. ” Add the following after the second paragraph:

“Shales and mudstone shall be treated as directed by the engineer.”

C3-85

Add the following to the end of the sub-clause:

“Where the existing surfacing layer falls within 1.2 m depth from the surface of the new pavement, it shall be removed or broken down and mixed with the underlying material as instructed by the engineer.” Add the following subclause:

“ (g) Draining of roadbed in cuts

The excavation depth in cuttings through hard formations shall normally be to the top level of the lower selected layer in the pavement structure. The first imported layer to be constructed will thus be the upper selected subgrade layer. To facilitate drainage of the roadbed and if so instructed by the engineer, this upper selected subgrade layer will be constructed as a drainage layer in the following manner: The “as excavated” floor of the hard cutting shall be prepared by removing all loose non-durable and decomposed materials by hand. Isolated high spots shall be broken down and major depressions, hollows and crevices in the floor shall then be backfilled with rock spalls consisting of suitably graded clean hard rock fragments not exceeding 100 mm in size and which conform to the durability requirements for a drainage material. The drainage layer shall then be constructed on top of this prepared floor with material which conforms to the requirements for a drainage layer as specified in clause B3402 and shall be compacted to 95% of modified AASHTO density. It shall have a nominal thickness of 150 mm with a minimum compacted thickness of not less than 100 mm in any one place, and shall comply with the level tolerances for the upper selected subgrade layer which it replaces. Measurement and payment will be based on the actual average layer thickness placed (excluding rock spalls) up to a maximum of 200 mm.”

B3306 CUT AND BORROW

(a) Dimensions of cuts

Insert the following after the second paragraph:

“The contractor shall take note of the fact that the excavation of hardrock or mudrock (shale) formations require special attention to minimize over break and that on account of its poor durability qualities, the mudrock material from the excavation may not be suitable for backfilling the over break and hence its use for this purpose may not be permitted. Where the amount of over break will result in an excessively thick drainage layer having to be placed as specified in subclause B3305(g), the contractor may be permitted to place the drainage layer at a lower level in the pavement and to make up the difference in the required level with one or more additional gravel layers on top of the drainage layer using material which conforms in all respects with the requirements of upper selected subgrade layers. Payment for such level correction layers shall be limited to one layer of maximum 150 mm thick and the cost of any additional layers shall be deemed to be included in the rate tendered for item B33.05. ” (g) General

Add the following after the first sentence of the second paragraph:

“The final cut surface in hard excavation shall not be more than 0,5 m below the specified slope face, measured at right angles to the strike and dip directions of the slope face. ”

C3-86

B3307 FILLS

(a) General

Add the following:

“Where existing embankments are to be widened, or where new embankments are to be constructed adjacent to existing embankments, the existing side slopes shall be benched as specified in subclause 3307(d) and in accordance with the details on the drawings. (c) Constructing a pioneer layer

Add the following:

“In circumstances where the top of the pioneer falls within the pavement depth and in order to fill the voids in the pioneer material and provide a suitable platform for the pavement layers to follow, a crusher run material shall be imported and placed true to line and level as directed by the engineer.” (d) Benching

Add the following to the first paragraph:

“Also where existing fills are to be widened, or where fills are to be constructed adjacent to existing fills or already constructed fills (e.g. half-width construction) the existing side slopes shall be benched in accordance with the details shown on the drawings or the directions of the engineer. Different material types on the bench or joint shall be well mixed to provide a uniform layer. ” Replace the first sentence of the sixth paragraph with the following::

“The dimensions of benches as well as the extent to which existing fills have to be cut back to form benches shall be as indicated on the drawings or indicated by the engineer. ” Add the following after the second paragraph:

“In order to obtain sufficient working width for road-building equipment when the existing road fill is widened, it may be necessary to form benches that extend beyond the normal road prism or to cut back into the existing road fill or both. The contractor shall submit his proposals in this regard to the engineer for approval before proceeding with such work. The contractor will be paid in accordance with the relevant payment items for work required to obtain a working width of up to 4 m. Additional work required to provide a working width in excess of 4 m shall be at the contractor's expense. ” (i) Widening fills

Replace the first sentence of the sixth paragraph with the following:

“Material from benches used in fill will be paid for as “cut to fill” or “side-cut to fill” as the case may be; refer to the general directions under clause B3312.” In the 8

th paragraph delete the first sentence which starts with “An extra over payment …..”

Add the following subclause:

“(k) Widening existing shoulder

Where the road is to be constructed in half widths, the existing shoulder may have to be widened or built up so as to provide adequate width for the accommodation of traffic. The construction procedure to be followed will depend on the relevant circumstances and the contractor shall liaise constantly with the engineer with a view of receiving continuous instructions in this regard. In general the construction procedure to be followed will entail widening of the existing embankment by way of bench construction as described in subclause B3307(d) using equipment suited to the working width.”

C3-87

B3308 FINISHING THE SLOPES

Add the following as a first paragraph:

“The contractor shall take care not to disturb the slopes of cuts and fills of the existing road prism unless such cuts or fills are required to be widened or flattened. Any material deposited on such slopes from overspill or whatever reason, shall be removed and any damage caused shall be reinstated, including the re-establishment of vegetation, to the satisfaction of the engineer and the cost thereof shall be deemed to be included for in the rate tendered under item 59.01. Only where the engineer has agreed beforehand that the disturbance of an existing cut or fill slope cannot reasonably be avoided, shall the trimming and finishing of such slopes be measured and paid for under item 33.13. Where, on account of circumstances prevailing prior to the commencement of work, the engineer orders that existing slopes be trimmed, it shall be measured and paid for under section 5800. Where the new road has been widened temporarily to accommodate traffic and the widening is no longer required, it shall be trimmed back to the standard cross-section at the instruction of the engineer. The surfacing shall be cut with a trimming wheel or other suitable equipment, to form a neat line along the new shoulder breakpoint and the surplus material shall then be bladed off to the required slope and disposed of. Care must be exercised not to damage the road surface. Cut and fill slopes shall be trimmed such that the groves on the slope is in a horizontal line, and not vertical. ” (d) General

Replace the second last paragraph with the following:

“The final trimming of cut slopes, profiling and cleaning of unpaved open drains in cuts and the initial bulk trimming of over built material on fill slopes shall be completed before any pavement layer work is commenced with, that is before the pavement layer profile pegs are erected. Also where the installation of subsoil drains will require blasting, the construction of the subsoil drains shall be completed before commencing with the layerworks.

No payment for pavement layer work will be made on a section until such time as the contractor has complied entirely with this requirement to the satisfaction of the engineer. ”

B3312 MEASUREMENT AND PAYMENT

General Directions (3) Work in Restricted areas Add the following: “Widening of existing fills as specified in sub-clause 3307(i) shall not be classified as restricted in terms of this sub-clause and no additional payment over and above payment under item 33.16 shall be considered in this regard.”

Add the following:

“(4) Definition of side-cut to fill

Material which is excavated from cuttings, including excavations to form benches in the roadbed and cut-back into the side slopes of existing fills, that is bladed or placed by excavator, grader or dozer into the position where it is to be re-used in fill without it having to be loaded and hauled to such places of use, shall be termed "side-cut to fill" and shall be measured and paid for as such. ”

C3-88

Replace the entire item 33.01 with the following item:

“Item Unit

B33.01 Fills constructed with materials obtained from various sources as scheduled under item B33.02:

(a) Material in compacted layer thicknesses of 200 mm and less: (i) Compacted to 90% of modified AASHTO density .......................................... cubic metre (m

3)

(ii) Compacted to 93% of modified AASHTO density .......................................... cubic metre (m3)

(iii) Eight roller passes compaction ..................................................................... cubic metre (m3) (b) Material in compacted layer thicknesses exceeding 200 mm: (i) Compacted to 90% of modified AASHTO density .......................................... cubic metre (m3) (ii) Compacted to 93% of modified AASHTO density .......................................... cubic metre (m

3)

(iii) Eight roller passes compaction ..................................................................... cubic metre (m3)

(c) Sand fills (as described in clause 3302(b): (i) Non-plastic sand with up to 20% passing through the 0,075 mm sieve, compacted to 100% of modified AASHTO density ........................................ cubic metre (m

3)

(ii) Non-plastic sand with more than 20% passing through the 0,075 mm sieve, compacted to 95% of modified AASHTO density ................................ cubic metre (m

3)

(d) Rock fill (as specified in subclause 3209(c)).................................................. cubic metre (m

3)

(e) Toes for rock fill embankments (as specified in subclause 3307(h)) .............. cubic metre (m3) (f) Pioneer layer (as specified in subclause 3307(c)) ......................................... cubic metre (m3) (g) Sand filter blanket (as specified in subclause 3307(f)) .................................. cubic metre (m

3)

(h) Fill material of G7 quality in sidewalk compacted to 93% of modified

AASHTO density .......................................................................................... cubic metre (m3)

(i) Fill material in shoulder widening compacted to 93% of modified AASHTO density............................................................................................ cubic metre (m3)

(j) Gravel material (G5) for steep slopes and between geosynthetic reinforcement layers compacted in up to 200 mm thick layers to 95% of modified AASHTO density.......................................................................... cubic metre (m

3)

(k) Gravel material (G7) between geosynthetic reinforcement layers

compacted in up to 200 mm thick layers to 98% of modified AASHTO density........................................................................................................... cubic metre (m3)

(l) Gravel material (G7) compacted in up to 200 mm thick layers to 98% of modified AASHTO density.......................................................................... cubic metre (m

3)

The unit of measurement shall be the cubic metre of material measured in the compacted fill. For subitems (a), (b), (c) and (d) the quantity measured shall be computed by the method of average end areas from levelled cross-sections prepared from the ground line after clearing and grubbing and the removal of topsoil and the completion of any preparatory roadbed treatment which may have been ordered by the engineer, but prior to the construction of the fill, and the final specified or authorized fill cross-section inclusive of the dimensions of authorised benches, superimposed thereon at 20 m intervals along the centre line of the road.

C3-89

All measurement shall be neat, and that part of the fill placed in excess of the authorized cross-section shown on the drawings or directed by the engineer, will not be paid for irrespective of the tolerances in workmanship allowed under the contract. Where the roadbed has subsided under the fills, the quantities shall be adjusted to make allowance for such subsidence, as set out in the note at the commencement of this clause. Measurement of fill shall distinguish between the alternative methods of processing and compacting. The quantities for subitems (e), (g), (j), (k) and (l) shall be calculated from the authorized dimensions. For subitem (f) the compacted volume of the material in the pioneer layer may be taken as equal to 70% of the loose volume of the material in the trucks as an alternative to taking cross-sections before and after construction. The tendered rates shall include full compensation for preparing, mixing, watering, placing, shaping and compacting the material supplied under item B33.02, to the densities or in the manner specified herein and for the protection and maintenance of the fill and the conducting of control tests, all as specified. The tendered rates for subitems (j), (k) and (l) shall also include for placing and compacting the material in accordance with the specifications of the suppliers of the geosynthetic reinforcement material. The tendered rate for subitem (h) shall also include full compensation for building up or reinstating fill in sidewalks. Subitem (i) shall apply to the temporary widening of existing shoulders in restricted widths as described in subclause B3307(k). The quantity measured shall be calculated as for subitems (a) to (d) and the tendered rate shall include for having to bench into the existing road prism and for having to work in restricted areas.” Replace the entire item 33.02 with the following item:

“Item Unit

B33.02 Supply of materials for the construction of fills:

(a) Gravel material from cut and borrow including free-haul up to 1,0 km............ cubic metre (m3) (b) Sand material from cut and borrow including free-haul up to 1,0 km .............. cubic metre (m3) (c) Materials from existing pavements including free-haul up to 1,0 km: (ii) Bituminous material (state surfacing type and nominal thickness) ................. cubic metre (m

3)

(iii) Cemented material ....................................................................................... cubic metre (m3)

(iii) Non-cemented material ................................................................................ cubic metre (m3)

(d) Side-cut to fill ............................................................................................... cubic metre (m3) (e) Materials from commercial sources including free-haul as stated below: (i) Gravel material of minimum G9 quality ........................................................ cubic metre (m

3)

(ii) Sand of minimum G9 quality (as described in clause 3302(b)) ..................... cubic metre (m3)

(iii) Pioneer layer material to subclause 3307(c) ............................................... cubic metre (m3) (iv) G5 quality material ...................................................................................... cubic metre (m3) (v) G7 quality material ..................................................................................... cubic metre (m3) (vi) Rockfill material (as specified in subclause 3209(c)) .................................... cubic metre (m3) In general the unit of measurement shall be the cubic metre of compacted fill constructed and the quantity shall be calculated from the authorised dimensions of the completed fill as for item B33.01. For subitem (a) the tendered rate shall include full compensation for procuring, as if from soft excavation or pits, loading and transporting the material for a free-haul distance of 1,0 km, for off-

C3-90

loading and spreading, breaking down, and for the removal, disposal and transporting for a distance of 1,0 km, of up to 5% by volume of oversize material, all as specified. For subitem (b) the tendered rate shall include full compensation for procuring from soft excavation or pits, loading and transporting the material for a free-haul distance of 1,0 km, for off-loading and spreading all as specified. For subitem (c)(i) the tendered rate shall include full compensation for breaking up existing bituminous surfacing by whatever means to the maximum fragment size permitted for fills, for excavating and loading the bituminous material separately from the underlying existing pavement as specified in subclause B3805(a), transporting the material for a free-haul distance of 1,0 km, and for off-loading and spreading. If the engineer should instruct that the bituminous surfacing be excavated together with the underlying pavement material, payment under this item shall nevertheless be made. For subitems (c)(ii) and (c)(iii) the tendered rates shall include full compensation for excavating, breaking up if required, cemented or non-cemented material from the existing pavement in any layer thickness and for controlling the depth of excavation as specified in subclause B3805(a), for loading and transporting the material for a free-haul distance of 1,0 km, and for off-loading and spreading. In circumstances where the depth of excavation need not be controlled as specified in subclause B3805(a), these subitems shall not apply and the existing pavement materials shall be classified in accordance with subclauses 3303 (a) and (b). Subitem (d) shall apply to fill constructed with material bladed directly from cut to fill including benches excavated in the roadbed and the side slopes of existing fills, using e.g. a grader or bulldozer without having to load and haul it to its place of use. The unit of measurement shall be the cubic metre of material computed from the cross-sections described under subitems (a) to (d), and the specified profile of the road cutting or authorised dimensions of the benches to be cut, superimposed thereon. The tendered rate shall include full compensation for excavating as if from soft excavation, and for blading the material to the place of use and spreading it. For subitem (e) the tendered rate(s) shall include full compensation for procuring the stated type and quality of material from commercial sources, for transporting the material over an unlimited free-haul distance up to the point of use on site, for off-loading and for spreading. No overhaul will be payable on material from commercial sources. General:

(1) The tendered rates for the respective subitems when combined with that of item B33.01, shall include full compensation for all the work involved in fill constructed from materials taken from various and any combination of sources as specified. (2) Where materials supplied to a particular part of a fill, are to be measured and paid for under two or more of the relevant subitems and cannot readily be measured separately in the compacted fill, the individual compacted quantities may be calculated from the ratio of material imported as measured loose in the hauling vehicles.”

Item Unit

Amend item 33.03 to read:

“B33.03 Extra over item 33.02 for excavating and breaking down material in:”

In the 3rd paragraph replace “item 33.01” with “item 33.02”.

C3-91

Item Unit Amend the heading of item 33.04 to read: “B33.04 Cut to spoil, including free-haul up to 1,0 km. Material obtained

from:” Add the following subitems: “(f) Existing bituminous material excavation ………………………………………….cubic metre (m3) (g) Non-cemented material excavation ……………………………………………..cubic metre (m3)” Add the following to the measurement and payment paragraphs: “For subitem (f) the unit of measurement shall be the cubic metre of surfacing removed from existing pavements separately from the underlying material on the instruction of the engineer and the quantity shall be determined from the demarcated area and actual thickness of surfacing removed. In addition the tendered rate for subitem (f) shall include full compensation for excavating bituminous material separately from the underlying existing pavement as specified in subclause B3805(a). Where the engineer instructs that the bituminous material be removed together with the underlying layer(s) to spoil, no separate payment will be made under this subitem and full payment shall be deemed to be included under subitem (a) or (g), as the case may be. In addition the tendered rate for subitem (g) shall include full compensation for excavating non-cemented material, with or without bituminous material, from the existing pavement in any layer thickness and for controlling the depth of excavation as specified in subclause B3805(a).”

Item Unit

B33.21 Trim temporary widened pavement layers ................................................ cubic metre (m3)

This item is applicable to the trimming and removal of pavement material including the surfacing, where the road had been widened temporarily to accommodate traffic. The unit of measurement shall be the cubic metre of pavement material trimmed as instructed by the engineer and shall be calculated from the specified cross sections. The tendered rate shall include full compensation for shaping and trimming the cross section of the road prism to its final line and level, for loading and transporting the material for a free-haul distance of 1,0 km and for disposing thereof as spoil. It shall also include for working in restricted areas.”