SPECIFICATION FOR CIVIL WORKS Contents Page C3.1... · SPECIFICATION FOR CIVIL WORKS 1 PROJECT SPECIFICATION The Project Specification, ... the pump house and water tanks PS …

Transnet PipelinesContract number: PYP/W1/6/21/1646Description of the Works: Tarlton Fire System Upgrade

NEC3 CONTRACT Page 1 of 22 Part C3: Scope of WorkANNEXURE C3.1: Civil Technical Specification

SPECIFICATION FOR CIVIL WORKS

Contents Page

1. PROJECT SPECIFICATION 2

2. STANDARD SPECIFICATION 2

3. DRAWINGS 28



SPECIFICATION FOR CIVIL WORKS

1 PROJECT SPECIFICATION

The Project Specification, consisting of two parts, forms an integral part of the Contractand supplements the Standard Specifications.

Part A contains a general description of the works, the site and the requirements to bemet.

Part B contains variations, amendments and additions to the Standardized Specificationsand, if applicable, the Particular Specifications.

In the event of any discrepancy between a part or parts of the Standardized or ParticularSpecifications and the Project Specification, the Project Specification shall takeprecedence. In the event of a discrepancy between the Specifications, (including theProject Specifications) and the drawings and / or the Bill of Quantities, the discrepancyshall be resolved by the Engineer before the execution of the work under the relevantitem.

2 STANDARD SPECIFICATIONS

The standard technical specifications are the following members of SABS 1200 series:

SABS 1200 C : Site Clearance

SABS1200 D : Earthworks

SABS1200 DB : Earthworks (Pipe trenches)

SABS1200 DM : Earthworks (Roads; Subgrade)

SABS1200 GA : Concrete (Small Works)

SABS 1200 L : Medium Pressure Pipelines

SABS1200 LB : Bedding (Pipes)

SABS1200 LC : Cable Ducts

SABS1200 LD : Sewers

SABS1200 LE : Stormwater Drainage

SABS1200 M : Roads (General)

SABS1200 ME : Sub-base

SABS1200 MF : Base

SABS1200 MG : Bituminous Surface Treatment

SABS1200 MH : Asphalt Base and Surfacing

SABS1200 MK : Kerbing and Channelling

SABS1200 MM : Ancillary Roadworks



A : GENERAL

PS-1 PROJECT DESCRIPTION

This project involves the upgrading of the fire protection system at TransnetPipeline’s Tarlton facility which includes protection for 26 potential fire zones,consisting of 17 fuel storage tanks, rail loading, tanker loading, truck staging areas,a refractionator plant, a spill basin and numerous manifolds.

The civil portion of the project comprises:

trenching throughout the site, including through existing roads and undercabling/pipelines for the installation of new piping and cablingminor additions to the road network on sitebackfilling of the excavations and trenches and re-instatementremedial work to the existing earth dame in preparation for the construction ofthe pump house and water tanks

PS-2 DESCRIPTION OF SITE AND ACCESS

The site is located at the corner of Rustenburg (R400) and Ventersdorp Road (N14).

The GPS coordinates are 26° 4'42.89"S, 27°38'24.30"E.

The site is split into six operational areas; these are the rail loading area, tank farm,IRP area, offices and workshop, road tanker loading and road tanker staging areas.There are in most cases fences separating these areas.

The primary entrance to the site is on the N14. This entrance passes directly to thetruck staging area then through the security check point and into the site.

The first building within the site is the office area, further northwest is the workshopthen northwest of that is the tanker loading station then the additive dosing stationthen the spill basin.

Adjacent to the offices to the southwest is the existing fire pump house andreservoir; this is within the tank farm area. Further southwest is the manifold whichis adjoined to the tank farm then the control room in the southwest corner.

The whole southwest edge of the site is the rail loading area, there is extensivestaging with a loading gantry and associated pumping manifold approximately southwest of the spill basin.

The primary tank farm is roughly central on the site and is all contained in a singlebund. There is a pump manifold to the north east of the bund area.

Finally there is the IRP area which falls between the rail loading, spill basin andprimary tank farm towards the north of the site. This area includes a fuel processingfacility as well as four storage tanks and a control room to the north west of the areaadjacent to the spill basin.



PS-3 NATURE OF GROUND AND SUBSOIL CONDITIONS

There is extensive trenching required throughout the site as well as earthworks forfoundations for the temporary and permanent tanks as well as the pump house andvalve banks.

There is an existing Geotechnical Report completed on the site and this ispresented in Annexure E.

PS-4 CONSTRUCTION AND MANAGEMENT REQUIREMENTS

PS-4.1 General

The Contractor shall comply with all requirements relevant to the project, withparticular attention to the aspects described hereafter.

PS-4.2 Quality assurance (QA)

The Contractor will be solely responsible for the production of work that complieswith the Specifications to the satisfaction of the Engineer. To this end it will be thefull responsibility of the Contractor to institute an appropriate Quality Assurance(QA) system on site. The Engineer will audit the Contractor's QA system on aregular basis to verify that adequate independent checks and tests are being carriedout and to ensure that the Contractor's own control is sufficient to identify anypossible quality problems which could cause a delay or failure.

The Contractor shall ensure that efficient supervisory staff, the required transport,instruments, equipment and tools are available to control the quality of his ownworkmanship in accordance with his QA system. His attention is drawn to the factthat it is not the duty of the Engineer or the Engineer’s Representative to act asforeman or surveyor.

PS-4.3 Management and disposal of water

The Contractor shall pay special attention to the management and disposal ofground water and surface stormwater on the site. The Contractor is required tomake every attempt to construct the Works in such a manner as to avoid damagedue to the uncontrolled flow of stormwater. It is essential that all completed works orparts thereof are kept dry and properly drained.

His responsibility will be held to include provision of adequate protection against anddamage by stormwater, flow from springs, and seepage, and to include provision forthe repair, at his expense of any damage to the Works that may arise as a result ofthe inadequacy of the protection provided by him.

Claims for delay and for repair of damage caused to the works as a result of theContractor’s failure to properly manage surface and ground water, will not beconsidered.

PS-4.4 Disposal of spoil or surplus material

The Contractor shall dispose all surplus and unsuitable material in legal spoil areasof his own choice. He shall be responsible for all arrangements necessary to obtain



such spoil sites. Note that no overhaul is payable under this contract and the ratestendered are to be fully inclusive of all direct and indirect costs.

PS-4.5 Testing

PS-4.5.1 Process control

The Contractor shall arrange for all tests required for process control to be done bya laboratory acceptable to and approved by the Engineer.

The Contractor may establish his own laboratory on site or he may employ theservices of an independent commercial laboratory. Whatever method is used, theContractor must submit the results of tests carried out on materials andworkmanship when submitting work for acceptance by the Engineer. The costs forthese tests shall be deemed to be included in the relevant rates and no additionalpayment will be made for testing as required.

The contractor shall carry out process control testing in accordance with the SABS1200 Specification and shall furnish copies of all results to the Engineer. Theresults shall include a plan layout clearly identifying where the test was taken, andits approximate elevation.

Notwithstanding the relevant “Testing” clauses of the SABS 1200 Specifications, thetesting frequency for process control shall not be less than that set out below:

Bulk Fill:

1 CBR, 1 Mod AASHTO and 4 density tests per lot (a lot is one day’s production or500 cubic m whichever is the lesser)

Selected layers and Gravel Wearing Course

1 Mod AASHTO, 4 density tests and 1 indicator per lot (a lot is one day’s productionor 1500 sq m, whichever is the lesser)

Trench Bedding and Backfill’

1 Mod AASHTO and 3 density tests per lot (a lot is one day’s production or 200cubic m, whichever is the lesser)

One set of densities must be taken on every fourth layer of backfill.

The trench bottom is to be tested for compliance with 90% Mod AASHTOcompaction.

Grading’s and indicator tests are required for compliance checking on all beddingcradle and selected fill blanket material.

Concrete

1 Set of 3 cubes per lot (a lot is one day’s production or 5 cubic m whichever is thelesser)



All Other Materials

The minimum testing frequency for all other materials shall be as set out in therelevant SABS 1200 specification.

General

Sampling is to comply with TMH5 and testing with TMH1.

The Engineer may reduce the Mod AASHTO testing frequency if materials areshown to be homogeneous.

PS-4.5.2 Acceptance control

The process control test results submitted by the Contractor for approval ofmaterials and workmanship may be used by the Engineer for acceptance control.However, before accepting any work, the Engineer may have further control testscarried out by a laboratory of his choice. The cost of such additional tests will becovered by a provisional sum provided in the bill of quantities, but tests that fail toconfirm compliance with the specifications, will be for the account of the Contractor.

Such tests may involve slight damage to the Works (e.g. holes in earthworks andfoundation layers).

After the tests have been completed the Contractor shall reinstate the Works andthe costs of such re-instatement are deemed to be allowed for in the Contractor’srates.

PS-4.6 Survey beacons

The Contractor shall take special precautions to protect all permanent surveybeacons or pegs such as bench-marks, stand boundary pegs and trigonometricalbeacons, regardless whether such beacons or pegs were placed before or duringthe execution of the Contract. If any such beacons or pegs have been disturbed bythe Contractor or his employees, the Contractor shall have them replaced by aregistered land surveyor at his own cost.

PS-4.7 Existing services

PS-4.7.1 Care & protection of services

The provision by the Engineer of any drawings or other information indicating theposition of any existing services shall in no way relieve the Contractor of hisobligations hereunder to acquaint himself with the position of all existing servicesnor of his liability for injury to such service.

The Contractor shall make himself acquainted with the position of all existingservices such as sewers, stormwater drains, culverts, water mains, manholes, valveboxes, conduits, cables for electricity and telephone lines, electricity, lighting andtelegraph poles or other service before any excavation or other work likely to affectthe existing services is commenced.

The Contractor will be held responsible for damage to existing services and anydamage caused by or arising out of the Contractor's operations, and shall makegood any damage at his own expense.



Whenever a service is found which is requiring to be repaired, the Contractor shallrequest permission from the owner thereof to undertake the necessary work inrepairing such service after having advised the Engineer of the existence of theservice.

The Contractor shall adequately support in position and protect from damage anywork that may become exposed by his excavation, or rendered liable to damage byreason of the work in hand. Where the Contractor anticipates or finds that it will beimpossible for him to carry out the work without causing damage to existing servicesor works, or where the Engineer in his discretion considers such damage likely tooccur, the Contractor shall make arrangements with the owner concerned, as theEngineer may approve, to temporarily remove, deviate, protect or suspend the workor service concerned.

The Contractor must advise the Engineer if any excavation near existing buildingfoundations or existing services are too close, and may cause damage to thatparticular service. The Engineer will then consider possible measures to be taken,discuss them with the Contractor and give a written instruction to the Contractor toinform him what to do.

The Contractor shall not cover up any existing service without the Engineer's priorapproval and he shall advise the owner thereof verbally and confirm such advice inwriting at least three days in advance of his intention to cover up the exposedworks.

Copies of all such confirmatory letters shall be submitted to the Engineer.

PS-4.7.2 Damage to services

After the site has been handed over, the Contractor shall ascertain the telephonenumbers and persons to be contacted at each of the service authorities in the caseof damage to services. These numbers shall be prominently displayed in theContractor's site office, preferably near the telephone or radio, before the firstpayment certificate is issued.

If damage to an existing service occurs, the Contractor shall immediately contactthe relevant service authority, after which he shall notify the Engineer or hisrepresentative.

PS-4.8 Management of the environment

The Contractor shall pay special attention to the following:

(a) Natural vegetation

The Contractor shall confine his operation to as small an area of the site as may bepractical for the purpose of constructing the works.Only those trees and shrubs directly affected by the works and such others as theEngineer may direct in writing shall be cut down and stumped. The naturalvegetation, grassing and other plants shall not be disturbed other than in areaswhere it is essential for the execution of the work or where directed by the Engineer.

(b) Fires

The Contractor shall comply with the statutory and local fire regulations. He shallalso take all necessary precautions to prevent any fires. In the event of fire the



Contractor shall take active steps to limit and extinguish the fire and shall accept fullresponsibility for damages and claims resulting from such fires which may havebeen caused by him or his employees.

PS-4.9 Overhaul

No payment will be made for overhaul on this contract.

PS-4.10 Site facilities available

PS-4.10.1 Contractor's camp site and depot

The Contractor is responsible to provide a suitable site for his camp and toprovide accommodation for his personnel and labourers. If the Employer canmake any specific site available to the Contractor, such site will be pointed outto the Contractor.

PS-4.10.2 Accommodation of employees

No housing is available for the Contractor's employees and the Contractorshall make his own arrangements to house his employees and to transportthem to site.

No informal housing or squatting will be allowed.

The Contractor shall provide the necessary ablution facilities at his camp siteand the site of the works for the use of his employees. Chemical toilets onlywill be allowed where temporary facilities have to be provided.

PS -4.10.3 Power supply, water and other services

The Contractor shall make his own arrangements concerning the supply ofelectrical power and all other services. No direct payment will be made for theprovision of electricity and other services. The cost thereof shall be deemed tobe included in the rates and amounts tendered for the various items of workfor which these services are required, or in the Contractor's preliminary andgeneral items as the case may be.

The Employer shall supply water for the purpose of constructing the works atno cost to the Contractor. The Contractor is responsible for all reticulation ofwater that they require and the available water supply is indicated in the C4Site Information document.

PS-4.11 Site facilities required

PS-4.11.1 Temporary offices

The Contractor is to allow the Engineer use of his offices for occasional visitsand regular site meetings (facilities for a minimum of 10 seated people).

PS-4.11.2 Laboratory facilities

The Contractor shall make his own arrangement for process control testingand the cost of such shall be deemed to be included in his rates and prices.



Acceptance control testing shall be arranged by the Engineer when and ifrequired and paid for by the Employer in terms of the relevant item in theSchedule of Quantities.

Any supervisory testing which may be instituted by the Engineer will notnecessarily be co-ordinated with the construction programme, nor shall theEngineers testing facilities be at the disposal of the Contractor.The Engineer will not authorise the covering up of any work until he issatisfied. Any authority so given shall not be held to diminish the Contractor’sobligation to uncover and make good all work which the Engineer maysubsequently deem to be defective on the basis of his supervisory checktesting.

PS-4.11.3 Sanitary facilities

The Contractor shall provide at his own expense suitable latrines and washingfacilities for his employees, in such manner and in such areas as shall beapproved by the Environmental Manager and in accordance with the EMP,and he shall strictly enforce their use.

The Contractor shall provide at his own expense suitable latrines and washingfacilities for the Engineer and his staff.

PS-4.11.4 Telephone facilities

The Contractor shall ensure that there is adequate means of communicationon site at all times.

PS-4.11.5 Housing for the Engineer and his staff

Not required.

PS-4.12 Requirements for accommodation of traffic

PS-4.12.1 Basic requirements

The travelling public shall have the right of way on public roads, and theContractor shall make use of approved methods to control the movement ofhis equipment and vehicles so as not to constitute a hazard on the road.

The Contractor shall ensure that all road signs, barricades, delineators,flagmen and speed controls are effective and that courtesy is extended to thepublic at all times.

Failure to maintain road signs, warning signs or flicker lights, etc, in a goodcondition shall constitute ample reason for the Engineer to suspend the workuntil the road signs, etc, have been repaired to his satisfaction.



The Contractor shall construct and maintain all temporary drainage worksnecessary for temporary deviations.

The Contractor shall provide and grant access to persons whose propertiesfall within or adjoin the area in which he is working.

No separate payment will be made for the provision and maintenance of suchaccesses and facilities.

Upon completion of the works the Contractor shall level off such bypasses anddetours to the original ground surface, scarify the detours to a depth of at least150mm to promote the growth of vegetation and leave same in neat andpresentable condition to the satisfaction of the Engineer.

PS-4.12.2 Traffic safety officer

Where warranted by traffic conditions on or near the site, the Contractor shallnominate a suitable member of his staff as traffic safety officer to beresponsible for the arrangement and maintenance of all the measures for theaccommodation of traffic for the duration of the project.

PS-4.12.3 Payment

The Contractor’s tendered rates for the relevant items in the Bill of Quantitiesshall include full compensation for all possible additional costs which mayarise from this, and no claims for extra payment due to inconvenience as aresult of the modus operandi will be considered.

PS-4.13 Finishing and tidying

Progressive and systematic finishing and tidying will form an essential part of thisContract. On no account must spoil, rubble, materials, equipment or unfinishedoperations be allowed to accumulate in such a manner as to unnecessarily impedethe activities or others, and in the event of this occurring, the Employer shall havethe right to withhold payment for as long as may be necessary in respect of therelevant Works in the area(s) concerned without thereby prejudicing the rights ofothers to institute claims against the Contractor on the ground of unnecessaryobstruction.

Finishing and tidying must not be deferred to the end of the Contract. TheContractor will be entitled, subject to reaching prior agreement with the Engineer, torequest that work in specific areas being inspected and certified as complete, priorto certification of completion of the whole of the works included in the Contract,provided always that the works in any such specific area will not be certified ascomplete, until the whole of the works within the specific area concerned, includingall finishing and tidying, has been fully completed to the satisfaction of the Engineer.

All finishing and tidying shall be carried out to the best advantage of the project as awhole and in the closest co-operation with other contractors.

Unless otherwise permitted in writing by the Engineer, not more than 500m of trenchin any one place shall be opened in advance of the laying operation.



PS-4.14 Barricading and lighting

In terms of the Occupation Health and Safety Act, 1993 (Act 85 of 1993), everyexcavation that is accessible to the public or that is adjacent to a public road orthoroughfare, or by which the safety of persons may be endangered, shall be:

For excavations other than trenches

o adequately protected by a barrier or fence at least one metre high and as closeto the excavation as is practicable; and

o provided with red warning lights or any other visible boundary indicators atnight or when visibility conditions are poor;

o inspected by watchmen employed by the Contractor to ensure that barricadesand lights are effective at all times.

For trench excavations

o adequately protected by means of at least two horizontal double sided‘red/white’ chevron tapes as approved by the Engineer. The tapes shall bestretched tightly between suitable supports along both sides and end of theexcavation at approximately 0.45m and 1.25m above the ground. The supportsshall consists of poles or iron standards securely planted in solid ground so asto enclose the spoil and the excavations and shall be at not more than 10mcentres;

o provided with red warning lights or any other visible boundary indicators atnight or when visibility conditions are poor;

o provided with a sufficient number of steel plates at least 2m x 1.20m x 8mmthick which may be laid across open excavated trenches to provide bridges forvehicles along the route of the work as and where may be considerednecessary by the Engineer. Such plates shall be made available on Site at alltimes by the Contactor;

o provided with protection for a private vehicular or a pedestrian crossing over anopen trench. Such crossings shall be protected on each side by a stout two railtimber fence, at least 1m high, consisting of 150mm x 75mm deal verticals set0.50m into the ground, with 75mm x 50m rails securely nailed to them. Wheredeals or boards are used as bridges, they must be battened underneath toprevent tipping. At least 4 lamps must be provided at each crossing. Thespacing between lamps along an open trench shall be not greater than 10metres. All lamps shall be kept in good order and continuously lit from dusk todawn and the Contractor shall employ a night watchman to ensure that thelamps remain lit;

o provided with warning barriers in addition to the barricading and lightrequirements set out above, where construction is in, or across, public roads.The barriers shall comprise 225mm x 40mm timbers firmly fixed to heavysupports. The barriers shall be located at least 20m distance from theobstruction in the direction of traffic approaching from all sides.

o The requisite ROAD CLOSED, DEVIATION, and other signs shall beprominently displayed well in advance of the work.

o All such signs and the positioning thereof shall comply with the requirementsset out in the National Institute for Transport & Road Research’s TechnicalManual K56. Where only a portion of the roadway is closed suitable emptydrums or pipes painted white shall be placed along the traffic side at distancesnot more than 20m apart. Lamps in good order shall be provided one to eachdrum or pipe and at least five to each barricade, in addition all poles andwarning notices shall be marked by means of approved reflecting material.



o regularly inspected by watchmen employed by the Contractor to ensure thatbarricades, bridges, warning barriers and lights are effective at all times.

The cost of the above is deemed to be included for in the tendered rates and therewill be no separate payment due.

PS-4.15 Progress photographs

The Contractor shall allow for the taking of photographs showing progress of theworks at weekly intervals as determined by the Engineer, and also of existingbuildings, fences, tress, crops, etc., prior to the start of the work.

The photographs shall be taken in the presence of the Engineer of hisrepresentative. Three colour prints each not less than 125mm by 90mm of eachphotograph taken shall be made, 2 of which are to be supplied to the Engineer andthe other to be retained for record purposes by the Contractor. Electronic copiesshall also be provided.

All critical stages shall be so recorded.

The Contractor shall be reimbursed through item 1.2.1.20 of the Schedule ofQuantities and the amount tendered shall be payable pro rata per month during theconstruction period.

PS-4.16 Environmental officers

The Contractor shall appoint an Environmental Liaison Officer (ELO) for the durationof the construction period. The ELO shall be a senior member of the constructionteam and have overall environmental management responsibilities on the site.

The ELO is to monitor the activities of the Contractor and all sub-contractors, and isto ensure that mitigation measures contained in this document are adhered to. Anynew, or amendments to existing, mitigation measures to address areas of concernare to be acted on as necessary by the Contractor.

The costs of the above are deemed to be included under item 1.1.1.18 & 1.2.1.18 ofthe Bill of Quantities.

PS-4.17 Stripping of top and sub-soils

The Contractor shall, prior to the commencement of earthworks determine theaverage depth of topsoil, and agree this with the Engineer, and strip the full depthtopsoil from areas affected by construction and related activities prior to thecommencement of earthworks.

This shall include access routes, working areas and storage / camp areas. Careshall be taken not to mix topsoil and subsoil during excavation.

No soil stripping shall take place on areas within the site that the Contractor doesnot require for construction works or areas of retained vegetation.

PS-4.18 Rehabilitation of compacted soils

Soils compacted by construction activity shall be deep ripped to loosen compactedlayers and re-graded to evenly running levels. Topsoil shall be re-spread overareas to be rehabilitated according to project specification.



PS-4.19 Stockpiles

Subsoil and topsoil stockpiles will be moved to areas of final utilisation as soon aspossible to avoid unnecessary erosion.

Topsoil stockpiles will be kept separate from other stockpiles, shall not becompacted, and shall not exceed 2 metres in height.

Subsoil stockpiles shall not exceed 3 metres in height.

Stockpiles shall be kept free of any contaminants whatsoever, including paints,building rubble, cement, chemicals, oil, etc.

PS-5 PROVISION OF AS BUILT INFORMATION

Provision for the supply of as built information, as stipulated below, has been madein the schedules.

The Contractor is to provide a list of co-ordinates indicating the ends of cable ductsand erf connection markers and water mains. This information must be certified asa true and correct reflection of the finished works and must be provided in a hardcopy format and in Model Maker format and shall include CAD details. TheContractor is to mark up the record details on a set of engineering layouts providedby the Engineer for this purpose as well as in electronic format.

The price tendered for carrying out such work shall be inclusive of all costs, albeitindirect or direct, to the Contractor. An independent surveyor must carry out thesurvey but he need not be a registered Land Surveyor.

All structures must be surveyed on completion. Further, no Certificate ofCompletion of Works shall be issued until such time as the Contractor provides theEngineer with this information.



B : AMENDMENTS TO THE STANDARD SPECIFICATIONS

INTRODUCTION

In certain clauses the standard, standardized and particular specifications allow a choice to bespecified in the project specifications between alternative materials or methods of constructionand for additional requirements to be specified to suit a particular contract. Details of suchalternative or additional requirements applicable to this contract are contained in this part ofthe project specifications. It also contains additional specifications required for this particularcontract.

The number of each clause and each payment item in this part of the project specificationsconsists of the prefix PS followed by a number corresponding to the number of the relevantclause or payment item in the standard specifications. The number of a new clause orpayment item, which does not form part of a clause or a payment item in the standardspecifications and which is included here, is also prefixed by PS, but followed by a newnumber which follows on the last clause or item number used in the relevant section of thestandard specifications.

PSA GENERAL

PSA-3 MATERIALSPSA-3.1 Quality

Where there is a standardization mark programme for any material, all suchmaterial supplied shall bear the official standardization mark.

Alternative materials or equipment proposed by the Contractor shall be tested. Thetest, as well as the materials or equipment, shall be approved by the Engineerprior to any such materials or equipment being built into the works and all costsinvolved in testing shall be deemed to be included in the rates tendered.

PSA-3.3 Ordering of materials (Additional sub-clause)

The liability shall rest with the Contractor to determine before ordering, therequired types and quantities of the various materials required for the completionof the Works in accordance with the Specifications and the Drawings issued to theContractor for construction purposes.

Any reliance placed by the Contractor on the estimated quantities stated in theSchedule of Quantities shall be entirely at the Contractor’s risk, and the Employeraccepts no liability whatever in respect of materials ordered by the Contractor onthe basis of the tender Document.

PSA-4. PLANTPSA-4.2 Contractor's office, stores and services

The Contractor's camp shall be kept neat and clean at all times and all surplus orrejected material shall be removed from the site.



PSA-5 CONSTRUCTIONPSA-5.1 Survey

PSA-5.1.1 Setting out of the Works

For any new work the Contractor shall establish his own reference lines fromwhich the work can be set out.

PSA-5.8 Ground and access to works

Add the following:

”On completion of operations the Contractor shall restore the ground surface,wherever it may have been disturbed, to its original condition by filling in all rutswith material similar to the material within the rut and levelling the ground and,where necessary, planting grass and shrubs as may be required. Any boundaryfences which have been removed or damaged by his operations and activitiesshall be repaired and/or reinstated at the Contractor’s expense”.

PSA-5.9 Accommodation of traffic (additional sub-clause)

The Contractor is also referred to Project Specification PS-4.12.

PSC SITE CLEARING

PSC-3 MATERIALS

PSC-3.1 Disposal of materials

Add the following:

“Unless otherwise ordered by the Engineer, the Contractor shall dispose ofmaterial resulting from trees and debris cleared and roots grubbed up (or anyother material including old rubble not required on site) at an off-site tip to belocated by the Contractor. Such a disposal site shall have the approval of theengineer, the relevant Local Authority and the landowner upon whose land the tipsite is located. No additional payment will be made for the transportation of suchmaterial or for royalties charged”

PSC-5 CONSTRUCTION

PSC-5.1 Areas to be cleared and grubbed

Add the following:

“The Contractor is to take cognisance of the fact that he will be working on privatelands. Under no circumstances is the Contractor to indiscriminately clear lands etcwithout the prior approval of both the Environmental Control Officer and theEngineer.”



PSD EARTHWORKS

PSD-3 MATERIALS

PSD-3.1 Classification for excavation purposes

Notwithstanding the provisions of this clause, the materials excavated shall not beclassified as to their nature except for hard rock requiring blasting. The ratestendered shall be through rates for the various items in the schedule.

PSD-3.2 Classification for placing purposes

PSD-3.2.4 Add the following sub-clause:

“Bulk earthworks for roads and platforms shall be carried out in accordance withthe provisions of SABS 1200DM-1981 in addition to SABS 1200D. All fill materialto roads and platforms shall comply with the material classification provisions ofTRH 14. Local fill over sewer and stormwater pipes, shall be carried out inaccordance with the provisions of SABS 1200D - 1990.”

PSD-5 CONSTRUCTION

PSD-5.1 Precautions

PSD-5.1.1 Safety

PSD-5.1.1.2 Safeguarding of excavations

Add the following sub-paragraph:

“(g) The Contractor or his agent or his representative shall not require orallow any person to work under unsupported overhanging material or inan excavation which is more than 1,5 m deep, and any excavation whichhas not been adequately supported or braced if there is a danger of theoverhanging material or the sides of the excavation collapsing. Thesupport, shoring or bracing to be designed and constructed by theContractor, shall be strong and sturdy enough to support the sides of theexcavation in question.”

The rates tendered under the relevant items in the Bill of Quantities shallinclude for battering or shoring (if required) and no additional paymentwill be made for making the excavations safe.

PSD-5.1.4 Nuisance

PSD-5.1.4.1 Dust nuisance

Add the following additional subparagraph:

“The Contractor is responsible for dust control and is liable for all claimswhich may result from dust nuisance on all parts of the site and at all timesfrom the date of handing over of the site to the completion date of the



contract. No payment regarding the above-mentioned will be made and allcosts shall be deemed to be covered by the tendered rates.”

PSD-5.2 Methods and procedures

PSD-5.2.2.1 Excavations for general earthworks and for structures

Add the following additional subparagraph:

“(f) The Contractor shall so plan his cut-to-fill operations that all excavatedmaterial is used in the manner that is most appropriate.

The Contractor shall conserve all suitable surplus material and he shall notborrow, spoil or waste any material unnecessarily. If excavated materialdesignated for a particular purpose become contaminated, is incorrectlyused or becomes unavailable through injudicious planning of excavationoperations, the Contractor shall replace the contaminated material and makegood any shortfall with material of quality at least equal to that of the saidselected material.

Where selection of excavated material is required, the method of excavationshall be so arranged as to avoid double handling. Wherever possibleexcavated material shall be placed in its final position without beingstockpiled. If stockpiling is unavoidable, materials intended for different usesshall be stockpiled separately

PSD-5.2.3 Placing and compaction

PSD-5.2.3.3 Compaction (additional sub-clause)

Notwithstanding the provisions of Clause 5.2.3, all general fill material andtrench backfill will be compacted to a minimum of 95% Mod AASHTO forcohesive material and 100% Mod AASHTO for non-plastic sand. In the case ofmaterial exhibiting “collapse potential”, the material shall be brought to 2%above OMC, as directed by the Engineer.

Excavated material found to be very moist will be required to be spread insuccessive layers over the site and processed to achieve the required moisturecontent prior to final leveling and compacting. The cost of such operations areto be included for in the rates tendered.

PSD-5.2.3.4 Benching (additional sub-clause)

All fills on ground of slope greater than one in six (1:6) are to be benched intothe in-situ material. Benches are to be a minimum of 2,5m wide. Payment willbe made per cubic meter as an extra over item to the cut fill rate, measured infill.

PSD-5.2.3.5 Cut/fill line undercut (additional sub-clause)

It is a requirement that the area along the cut/fill (excluding along the newlyformed platform) is to be undercut by 500mm after topsoil stripping to a width of



5.0m meters in plan (see typical detail). The excavated material, if suitable, isto be incorporated into the general fill and compacted as per the specifications.The unit of measurement is the cubic meter, and will be measured in cut.Should the material be unsuitable for use in the fill, it is to be spoiled at thecontractors off site dump.

The excavation created by the undercut will be backfilled with suitable materialsourced from excavations within the site and compacted as per thespecifications. The unit of measurement is the cubic meter, and will bemeasured in fill.

PSD-5.2.3.6 Undercut (additional sub-clause)Where so instructed by the Engineer, the Contractor is to undercut areas to aspecified depth, after topsoil stripping, and spoil the excavated material at thecontractors off site dump. The unit of measurement is the cubic meter, and willbe measured in cut.

The excavation created by the undercut will be backfilled with suitable materialsourced from excavations within the site or material imported from commercialsources and compacted as per the specifications. The unit of measurement isthe cubic meter, and will be measured in fill.

PSD-5.2.3.7 Shaping and sealing of fill (additional sub-clause)

The surface areas of fill zones shall be shaped so as to shed rain water andsealed with a flat steel drum or pneumatic roller at the end of each working day.All holes, ruts and laminations are to be filled. The cost of this sealing operationis deemed to be included in the tendered rates.

PSD-5.2.4 Finishing

PSD-5.2.4.3 Grass or other vegetation

Add the following:

The full responsibility of maintaining the planted areas shall rest with theContractor until the end of the Contract. The maintenance shall includewatering, re-fertilization when necessary, re-planting of dead areas, weedingand any other work which the Engineer may consider necessary for theestablishment of a satisfactory stand of living vegetation. The rate tendered isto include for maintenance.

Planting grass runners

Grass planting shall be carried out where directed by the Engineer usingCynodon Dactylon or other approved grass. The grass runners shall be plantedin moist soil prepared by thoroughly loosening to a minimum depth of 75mmand at a maximum spacing of 150mm in both directions. 3.2.1 granular (32)fertiliser shall be applied at a rate of 20kg per 1,000 m².

Grass sodding



Grass sods shall be planted where directed by the Engineer using CynodonDactylon or other approved grass. The sodding shall comprise a completecover of grass sods. (it may be a requirement to plant 500mm wide strips ofsods) 3.2.1 granular (32) fertiliser shall be applied at the rate of 20kg per1,000m2. Sods shall be planted in moist soil prepared by thoroughly looseningto a minimum depth of 75mm and held in position by wooden stakes on slopessteeper than 1 in 5. The cost of the stakes is deemed to be included in thetendered rate.

Hydroseeding

a) SeedThe composition of seed types for a 5,000 litre hydro seeding mixture (sufficientto cover 1,000 m²) shall be as follows:

i) Eragrostis tef 150 gii) Eragrostis curvula 500 giii) Cynodon dactylon 500 giv) Paspalum notatum 2 500 gv) Alta Fescue 31 500 g

The seed type and composition may be varied by the Engineer.

b) Soil Soil shall be prepared by thoroughly loosening to a depth of 75mm.

c) FertilizerFertilizer shall be “3.2.1 Granular (32)” which is to be included in each tank load(9500 litres) at the rate of 20kg per tank added.

d) CompostThe Contractor shall incorporate in each 5 000 litre tank load, 0,5m³ of relativelyfresh chicken manure. The manure shall not contain more than 10% othermaterials such as wood shavings, soil, feathers etc.

e) MulchThe mulching agent shall consist of either wood cellose fibre mulch or freshthreshed hay or straw and shall be free of contaminants. The mulch shall besuitably prepared, so that when mixed it will become uniformly suspended andform a homogenous slurry.

The mulching agent shall be applied at a rate of 120kg per 5 000 litre tank.

f) EquipmentThe seed mixture shall be applied by a “Hydro seeder” type distributorapproved by the Engineer.

The distributor shall incorporate a built-in system and be capable of even andregulated distributions with a spray range of 25 metres.

g) Application of hydro seeding mixtureThe seed, fertilizer, compost and mulch shall be added and mixed beforeapplication.

The mixture shall be applied before applied at a rate of 5,000 I/1,000m²uniformly over the area to be hydro seeded. No hydro seeding shall take placebetween 1st May and 31st August in any year, without the approval of theEngineer.



PSD-5.2.5 Transport for earthworks

Notwithstanding the provisions of this clause, no overhaul will be payable underthis Contract.

PSDB EARTHWORKS (pipe trenches)

PSDB-3 MATERIALS

PSDB-3.1 Classes of excavation

Notwithstanding the provisions of this clause, the materials excavated shall not beclassified as to their nature except for hard rock requiring blasting. The ratestendered shall be through rates for the various items in the schedule.

PSDB-4 PLANT

PSDB- 4.2 Control of water

Add the following:

“The Contractor shall control all surface and sub-surface water duringconstruction, and the costs of such shall be deemed to be included in the ratestendered for excavation”

PSDB-5 CONSTRUCTION

PSDB- 5.1 Precautions

PSDB-5.1.5 Trench Excavations (additional sub-clause)

The precautions for excavations as specified in Clause 5.1.1 of Section 1200 D,1200 DA, and the relevant clauses in PSD, shall also apply to all trenchexcavations.

The Contractor shall take all the steps necessary to ensure that no person isrequired or allowed to work in a trench or any other unsupported overhangingexcavation which is more than 1,5 m deep, and any excavation which has notbeen adequately supported, shored or braced if there is any danger whatsoever ofthe sides of the excavation collapsing. The support, shoring or bracing to bedesigned and constructed by the Contractor, shall be strong and sturdy enough tosupport the sides of the excavation in question.

The rates tendered under the relevant items in the Bill of Quantities shall includefor battering or shoring and no additional payment will be made for making theexcavations safe. The contractor is to note that there are deep excavations andthese will require shoring.

PSDB- 5.7 Compaction

Notwithstanding the compaction provisions of this clause, backfill for all trenchesshall be compacted to not less than 95 percent Modified AASHTO for cohesivematerial. Non-plastic sand shall be compacted to 100% Mod AASHTO



PSDM EARTHWORKS (ROADS, SUB-GRADE)

PSDM-2 INTERPRETATIONS

PSDM-2.1 Supporting specifications

Add the following:

The requirements of PSD – EARTHWORKS shall also apply to all roadworks.

PSL MEDIUM PRESSURE PIPELINES

PSL-7 TESTING

PSL-7.3 Standard hydraulic pipe test

Add the following:

“The Contractor shall be responsible for the transfer of all water used in the testingof pipelines from the Employers point of supply to the point of use. The Contractorshall, at his own cost, provide a suitable connection on the new pipeline in orderthat it may be filled. This connection shall be capped or removed to the satisfactionof the Engineer upon completion of the hydraulic test. The costs for the hydraulictesting of the pipeline are deemed to be included in the tendered rates.”

PSMH ASPHALT BASE AND SURFACING

PSMH-3 MATERIALS

PSMH-3.5 Aggregates

PSMH-3.5.8 Grading

The asphalt surfacing shall comprise a continuously medium graded mix asper Table 2 SABS 1200 – MH.

PSMH-4 PLANT AND EQUIPMENT

PSMH-4.4 Paver

The asphalt shall be laid by Mechanical Paver.

PSMH-5 CONSTRUCTION

PSMH-5.8 Compaction

The asphalt surfacing shall be compacted to not less than 95 percent of Marshalldensity.

3 DRAWINGS

Refer to Annexure C3.17 of Part C3: Scope of Work for all civil drawings.

Documents

SPECIFICATION FOR CIVIL WORKS Contents Page C3.1... · SPECIFICATION FOR CIVIL WORKS 1 PROJECT SPECIFICATION The Project Specification, ... the pump house and water tanks PS …