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    SECTION C

    PART 2

    PROJECT SPECIFICATION

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    AA-R 11/12 M 025 G C2/Contents December 2011

    Street Lighting Works Doha South

    CONTENTS

    PART 2 PAGE

    CONTENTS C2/Contents

    SECTION 1 GENERAL C2/1

    SECTION 2 Q-TEL WORKS C2/2

    SECTION 3 QGEWC - ELECTRICITY DEPARTMENT WORKS C2/2-9

    SECTION 4 QATAR PETROLEUM C2/9-10

    SECTION 5 STREET LIGHTING WORKS

    PART I GENERAL C2/11-20

    PART II INSTALLATION & MAINTENANCE

    PART III - MATERIAL SPECIFICATION

    C2/21-43

    C2/44-88

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    SECTION 1 - GENERAL

    1.01 A Description of the Site

    The site: primarily in Doha South and anywhere throughout the State of Qatar as directedby the Engineer. The exact sites location shall be determined by the Road Operation andMaintenance Department of Asset Management Affairs during the tenure of the contract

    according to the works programme.

    1.01 B Description of the Works:

    The works consist of Supply, Installation and maintenance of Street Lighting System andDecorative Type Columns. Exact works shall be given to the Contractor through WorkOrder as contained herein (page B3/7). The quantity may be installation of single (column,luminaire, lamp, cut-out, cable joint and small span of cable, applicable for high mast,conventional or decorative column) and extension of M.V. /L.V Networks to energise thestreet lighting feeder pillar including removal of column and feeder pillar.

    1.02 General Responsibilities for Utility Works

    The Contractor shall be responsible for liaison with Public Utility Departments with regardsto the overall co-ordination and programming of utility works including street lighting cablenetwork.

    No trench or chamber excavation will be permitted until: -

    i. The locations and depth of all existing services including street lighting cable networkhave been established by trial holes to the satisfaction of the Engineer.

    ii. The Contractor has provided the Engineer with accurate setting out information forthe line and level of the proposed utility installation.

    iii. The Engineer has confirmed the accurate setting out information for the line andlevels of the proposed utility installation.

    The Contractor shall include for the requirements of this clause in his Programme ofWorks and his Bill of Quantities Rates.

    The Contractor shall be responsible for arranging, providing and maintaining all roadclosures and traffic diversions required by the Works with the Traffic Police Departmentand the Engineer.

    1.03 Terms and Definitions: ESD

    This definition/term shall be deleted and substituted by the following: -

    Within this Specification each and every reference to ESD -The Engineering ServicesDepartment of the Ministry of Public Works and MD - defined as the Roads Operation andMaintenance Department of Public Works Authority.

    Each and every reference to QGEWC Qatar General Electricity & Water Corporationand its Divisions and Sections is substituted by the respective Divisions and Sections of itspresent KAHRAMAA Qatar General Electricity & Water Corporation.

    1.04 Terms and Definitions: The Engineer

    This definition/term shall be amended to read: Director of the Asset Management Affairsof Public Works Authority is the Engineer as described in the Section B Part II Conditionof Particular Application.

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    SECTION 2 Q-TEL WORKS

    This section specifies the requirements for all Q-Tel Works.

    2.01 Special Requirements

    1. All notices to be given by the Contractor shall be in writing and delivered by hand.

    2. The Contractor shall consult the Qatar Public Telecommunications Corp. (hereaftercall Q-Tel) not less than one month before it is proposed to commence work toascertain whether any underground installations will be affected by the proposedworks, in which event the Contractor shall make all necessary arrangements with Q-Tel to safeguard the installations.

    3. The Contractor shall give at least one week's notice in writing to Q-Tel of the datesupon which it is intended to operate plant or equipment or carry out any work for whichpermission has been given in writing by Q-Tel; such operations of work shall only becarried out in the presence of Q-Tel unless notice shall be obtained in writing from Q-Tel that they do not require to be present.

    4. Q-Tel may require work to be executed on their installations during the period of theContract; the Contractor shall afford all facilities to Q-Tel's contractors or workmenuntil their diversion work is complete. The Contractor shall co-ordinate the work of Q-Tel and his own activities and when necessary shall amend his programme of workingto suit all requirements of Q-Tel in connection with their diversion work and shall keepthe Engineer informed in writing of all arrangements made.

    5. The Contractor shall locate and mark with suitable posts all Q-Tel undergroundinstallations that are within the area of the Works and shall ensure that such markersare maintained in their correct positions at all t imes.

    SECTION 3 QGEWC - ELECTRICITY DEPARTMENT WORKS

    This section specifies the requirements for all Electrical Works.

    3.01 General

    All of the works associated with electricity supply shall be carried out in accordance withthe latest Specifications for Materials, Excavation and Backfill, Cable Laying and Jointing,as issued by the Qatar General Electricity & Water Corporation, Electricity Department(QGEWC [EN]). Contractors are deemed to be in possession of the latest Specifications.

    3.02 Approved Contractor

    All QGEWC (EN) M.V, H.V and E.H.V. works shall be carried out by a Contractor or Sub-

    Contractor prequalified and approved by the Qatar General Electricity & WaterCorporation (Electricity Networks Dept.). Proof of such approval shall be required inwriting prior to the Works commencing on site and the name of any Sub-Contractor to beused shall be entered in Appendix D to Section D Tender Technical Deliverables when theTender is submitted. All cable jointers to be used on the Contract shall be required toundertake and pass a trade test conducted by QGEWC (EN) at the Contractors expense.

    3.03 Protection of Excavation

    1. The Contractor shall comply with all requirements of the Traffic Police Department for

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    marking, lighting and protecting excavation. It is the responsibility of the Contractorto ascertain the requirements of the Traffic Police Department and to comply fullywith these requirements. No additional payments will be authorised under anycircumstances for marking, lighting or protecting excavations.

    2. Where carriageway works and road crossings are performed the Contractor shallprovide steel plates of sufficient size and quality to permit the safe passage of trafficand the plates shall be so placed (and if necessary fixed) to permit reasonable traffic

    flow.3. All doorways, gates and entrances shall be kept clear with full access. Where

    excavations impede pedestrian access crossing boards shall be provided. Crossingboards shall be 1250 mm wide with a hand rail on both sides 1 metre height andguard rails on both sides at vehicular access to premises etc. Ducts will not beinstalled at entrances to premises except on the express instruction of the Engineer.

    4. Materials excavated shall be placed so as to prevent nuisance or damage. Wherethis is not possible, the material shall be removed from site and returned forbackfilling on completion of cable laying at the Contractor's expense. In cases wherethe excavated material is not to be used for backfilling trenches it must be removedfrom site on the same day as it is excavated. Surplus material shall only be disposedof at Government approved sites. At the time of contract award the Contractor shallcontact the Ministry of Municipality & Urban Planning to ascertain the approved sites

    and routes to them.

    3.04 Inspection of Excavation and Cable Installation Works

    1. QGEWC (EN) will require to carry out inspections at the following stages:- a) Completion of excavations. b) Completion of bedding of trench prior to cable installation. c) Cable installation. d) Completion of surround over cables and installation of cable tiles etc. e) Upon completion of reinstatement.

    2. The Contractor must not progress from one stage to the next of the above without the

    approval of QGEWC (EN) and the Engineer. The Contractors shall be responsible forarranging inspections by QGEWC (EN) to suit his programme of works.

    3.05 Supply of Materials

    1. Where materials are to be supplied by the Contractor, the following shall apply:-

    a) Materials shall be ordered in accordance with the Specifications issued byQGEWC (EN)

    b) Specifications and the details of the proposed supplier shall be submitted toQGEWC (EN) for approval prior to a firm order being placed.

    c) On delivery of materials to Qatar, QGEWC (EN) inspectors shall be given theopportunity to inspect the materials prior to their use.

    3.06 Record Drawings

    1. The Contractor shall keep accurate record drawings of the arrangement, positionsand details of all works constructed by him. These drawings will be of forms and toscales approved by the Engineer's Representative, and shall be prepared as the workproceeds in ink on transparent linen, or plastic film, or as modifications to QGEWC(EN) existing records as decided by QGEWC (EN) and the Engineer.

    2. As soon as each drawing has been completed, two dye-line prints shall be submittedto the Engineer's Representative for approval.

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    3. If the drawings or documents are not approved, one copy shall be returned to theContractor with marked indications of the alterations required. Upon final approvalone copy of the drawing or document shall be stamped "Approved" by the Engineer'sRepresentative and returned to the Contractor forthwith.

    4. After such approval is given, the Contractor shall supply to the Engineer'sRepresentative two dye-line prints, the original drawing and two negatives of each,one for the use of the Engineer and one for QGEWC (EN).

    5. All record drawings shall be completed within 30 days of the commencement of theMaintenance Period.

    6. Record Drawings will show accurately:-a) The positions and depth of all cables with measurements from kerb lines or

    permanent structures and finished levels.b) Section for multi-cable trenches with each cable identified.c) Joint positions with measurements from kerb lines or permanent structures.

    7. Diary sheets for work completed shall not be authorised until such records have beenpresented to the Engineer and accepted.

    8. The quality of these drawings shall be consistent with the current standard ofQGEWC (EN).

    3.07 Programme of Work

    1. The Contractor is responsible for all liaisons with QGEWC (EN) in respect ofprogramming the installation and commissioning of the complete electrical system.He shall ensure that QGEWC (EN) are at all times kept informed of the currentprogress of the Civil Works on site and that his approved electricity supply Sub-Contractor programs the cable laying works in the specified sequence in accordancewith the approved programme.

    3.08 11 KV Cables

    1. The cables shall be paper insulated cables suitable for use on the QGEWC (EN)11 KV system and shall be of the following type:-

    3 core copper, standard, and sector shaped conductors. Paper insulated, ofthe Mass Impregnated non-draining oil type.

    Belted Insulation, without core screening. Lead sheathed.

    Steel Wire Armoured. PVC Outer Serving.

    2. Conductor sizes shall be as shown on the drawings and shall be plain, annealedshaped standard copper. They shall comply with BS 6360: 1981.

    3. Conductor screening shall be in accordance with BS 6480: 1969.

    3.09 Medium & Low Voltage Cables

    1. The cables shall be 4 core, 2 cores or single core paper insulated suitable for useon the QGEWC (EN) M.V & L.V. System. 4 core and 2 core copper cables shallbe stranded, sector shaped conductors. Single core copper cables shall bestranded, compacted circular conductors.

    2. The general construction of all cable shall be of the following type:-

    Paper Insulated of the Mass Impregnated Non-draining oil type. Belted Insulation.

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    Lead Insulation Double Steel tape armoured (for 4 core and 2 core cables), PVC Outer

    Serving.

    3. Conductor size shall be as shown on the drawings and shall be plain, annealedshaped stranded copper complying with BS 6360: 1981

    3.10 General Requirements for 11 KV, M.V and L.V. Cables

    1. Insulation shall be in accordance with BS 6480: 1969. It shall, in addition becapable of sustaining a constant temperature in the adjoining conductors of 80C,and short excursions under fault conditions to a maximum of 250C. Thesetemperature values shall apply to the insulation. This shall apply to both the coreand the belt papers. Core cables shall not be of the screened type. Laying up ofthe cores shall be in accordance with BS 6480: 1969. The insulation shall be ofpaper and impregnation shall be of the Mass Impregnated Non- Draining oil type.

    2. The sheath shall be of lead alloy E to BS 801: 1953. Minimum thickness inaccordance with BS 6480: 1969.

    3. Bedding over the sheath shall be of either extruded PVC, or compounded paperand fibrous tapes. It shall be in compliance with BS 6480: 1969.

    4. The armour shall comprise a single layer of galvanised steel wire which shallcomply with the requirements of BS 6480 and BS 1442.

    5. The over sheath shall be of extruded black PVC. It shall have a performance atleast equivalent to Type TM 1, of BS 6746, Table 1.

    3.11 Pilot Cables

    1. Pilot cables shall be PVC insulated multi core cables to be used for:a) Standard pilot wires protection schemes.b) Telecommunication purposes.

    2. Conductors shall be stranded copper, plain, annealed and in accordance with

    BS 6360.

    3. Core insulation shall be PVC complying with the requirements of BS 6746. It shallbe applied by and extrusion process and shall form a compact, homogeneousbody of uniform thickness. Insulation thickness shall be in compliance with BS6346.

    4. Core identification shall be by one of the following:-a) Numbers printed on the core insulation.b) Colour, 4 mm cores having colours Red, Yellow, Blue and Black.

    5. Bedding shall be in compliance with BS 6346.

    6. The cables shall have a single layer of galvanised steel wire armour of diameter1.6 mm in accordance with BS 6346.

    7. The over-sheath shall be of black PVC in compliance with BS 6746, Type 1compound. It shall have minimum thickness of 1.7 mm and shall be in generalcompliance with BS 6346.

    3.12 Jointing 11 KV, M.V, L.V. and Pilot Cables

    1. General

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    All jointing shall be carried out to the instructions of QGEWC (EN) and theEngineer and only by approved jointers. All jointing shall be carried out inaccordance with the QGEWC (EN) Safety Rules.All connections to lead sheaths shall be plumbed.

    2. 11kV Terminations: These shall generally be of the heat shrinkable type using

    compression connectors although occasionally compound filled terminations shallbe required. Generally crossed cores shall be avoided.Straight Joints: Intermediate joints shall be joined in the easiest wayavoiding crossed cores.Phasing Joints: Shall be made in accordance with the instructions ofQGEWC (EN) and the Engineer to obtain correct phasing. The joints shall be ofthe bituminous filled type using sweated ferrules.

    3. Pilot Cables:These shall be jointed in accordance with the instructions of QGEWC (EN) and theEngineer. The joints shall be resin filled type using compression connectors forstraight joints and mechanical glands for terminations.

    4. 600/1000 Volt CablesAll jointing shall be on a colour to colour basis such that:

    Core 1 - red phase Core 3 - blue phaseCore 2 - yellow phase Core 4 - neutral

    For terminations Heat Shrinkable techniques and compression connectors shall beused.For straight joints Heat Shrinkable techniques of joints using bituminous compoundor resin shall be used at the discretion of QGEWC (EN) and the Engineer.For tee or branch joints bituminous compound or resin shall be used at thediscretion of QGEWC (EN) and the Engineer. Mechanical or sweated connectors

    shall be used as decided by QGEWC (EN) and the Engineer.

    3.13 Spacing Between Cables

    1. High Voltage11,000 volt cables shall be laid with a horizontal spacing of 0.75 metre betweencentres and a minimum distance of 0.15 metre from the trench wall.Pilot cables shall be laid with a horizontal spacing of 0.14 metre from theassociated main cable. In the case of multiple cable trenches pilot cables will belaid between the power cables.

    2. Medium & Low Voltage1000 volt main cables shall be laid with a horizontal spacing of 0.6 metre between

    centres and with a minimum distance of 0.15 metre from the trench wall.

    1000 volt service cable shall be laid with a horizontal spacing of 0.3 metre betweencentres and minimum distance of 0.15 metre from the trench wall.

    3. High Voltage and Medium Voltage Cables in Same Trench

    Where 11,000 volt and 1,000 volt cables are laid in the same trench the spacingbetween the 11,000 volt and 1,000 volt cables shall be .75 metre.

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    4. Reduction of Spacing

    Any reduction from the above spacing can only be permissible for lengths of 10metres or less.

    3.14 Trench Depth

    1. High Voltage

    For 11,000 volt cables the trench shall be 0.95 metre deep.

    2. Medium Voltage

    For 1,000V main cables the trench shall be 0.85 deep.For 1,000V services cables the trench shall be 0.65 metre deep.

    3. Arrangements for Trenches with High Voltage and Medium Voltage Cable

    Where 11,000 volt and 1,000 volt cables are to be laid along the same route astepped trench shall be dug with the 1,000 volt cables laid inside i.e. away from theroad, the 11,000 volt cables.

    3.15 Cable Tiles

    1. The Contractor shall provide and install:

    a) Concrete cable tiles over all 66 KV cables. The cable tiles shall be of the size andform shown in the drawings.

    Samples must be provided for approval by QGEWC (EN) and the Engineer, andsatisfy a test of impact strength in accordance with B.S/ 2484: 1985.

    b) Cable tiles over all 11,000 volt cables manufactured from recycled polyethylene orsimilar complying with the following requirements:-

    Minimum thickness : 12 mmLength : 1 metreWidth (minimum) : 24 mmTensile strength : 8.40 N/mm2

    (B.S. 2782: 1976 Method 320 C)

    c) The tiles shall be marked as specified. The cable tiles must be supplied completewith any pins, pegs or other devices for jointing tiles together. Samples must besupplied to QGEWC (EN) and the Engineer for approval prior to use.

    3.16 Removal of Existing Cables

    1. The Contractor shall liaise directly with QGEWC (EN) regarding the removal ofexisting cables and shall not, under any circumstance, commence removal ofcables until QGEWC (EN) have verified such apparatus as being redundant.Removal of cable shall only be carried out in the presence of a QGEWC (EN)engineer.

    2. The Contractor shall arrange uplift of empty cable drums from QGEWC (EN)Stores and shall return all recovered cables neatly coiled on the drums provided.

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    3.17 Ducts

    1. Ducts are to be supplied by the Contractor. They shall be of the following type:Material - High impact resistant PVCInternal Diameter - 150 mm or 100mm as specifiedMinimum wall thickness - 3.6 (for 150mm) or 2.4mm (for 100mm)Samples must be provided for approval by the Engineer prior to use.

    3.18 Quarry Scalping

    1. It shall comprise of quarried limestone materials having particle sizes varying from5 mm down to dust. There being a homogeneous mixture of all particle sizes.

    2. The materials shall have specific mechanical and thermal resistive qualities as aredefined below:-

    a) Thermal ResistivityThe material shall be subject to 90% compaction, using the optimumamount of water. After subsequent drying, such that the water content doesnot exceed 2% of the weight of the sample the thermal resistivity of thematerial shall not exceed 2.0C M/Watt.

    b) Mechanical QualitiesThe material shall have mechanical qualities that meet the requirements ofthe QCS2007 Roadworks Section.

    3.19 Special Requirements

    1. All notices to be given by the Contractor shall be in writing and delivered by hand.

    2. The Contractor shall consult the Department's Engineer not less than one monthbefore it is proposed to commence work to ascertain whether any undergroundinstallations will be affected by the proposed work, in which event the Contractorshall make all necessary arrangements with the Department to safeguard theinstallation.

    3. The Contractor shall give at least one week's notice in writing to the Department'sEngineer of the dates upon which it is intended to operate plant or equipment orcarry out any work for which permission has been given in writing by theDepartment's Engineer; such operations of work shall only be carried out in thepresence of the Department's Engineer unless notice shall have been obtained inwriting from the Department's Engineer that they do not require to be present.

    4. The Department may require work to be executed on their installation during theperiod of the Contract; the Contractor shall afford all facilities to the Department'scontractors or workmen until their diversion work is complete. The Contractor shallco-ordinate the work of the Department and his own activities and when necessaryshall amend his programme of working to suit all requirements of the Department

    in connection with their diversion work and shall keep the Engineer informed inwriting of all arrangements made.

    5. The Contractor shall locate and mark with suitable posts all the Department'sunderground installations that are within the area of the Works and shall ensurethat such markers are maintained in their correct positions at all times; theContractor shall advise the Department's Agent of any installation not found whereshown on the Drawings, or found but not shown or found damaged orsubsequently damaged.

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    SECTION 4 - QATAR PETROLEUM

    This section specifies the requirements for all QGPC Works.

    4.01 QP Special Requirements

    1. When working near existing QP Gas/Oil facilities the following conditions shall be

    adhered to.All notices to be given to the Contractor shall be in writing and delivered by hand.

    2. A permit to work must be obtained for all work within fifteen (15) meters distancefrom all boundaries of existing facilities. These permits can be obtained throughEngineering (Mesaieed) and twenty four (24) hour notice should be given to preventdelays.

    3. Mechanical/hydraulic rock breakers shall not be used within two (2) meters of QP(Oil & Gas Operations) live gas/Oil/NGL pipelines.

    4. Should jack hammers be required within two (2) meters of any buried pipelines andbetween any pipelines running in the same easement all round pipe protection mustbe provided before commencement.

    5. Pilot holes to locate existing lines shall be dug by hand tools only before allowingmechanical equipment to operate within five (5) meters of QP (Oil & GasOperations) live gas/oil/NGL pipelines

    6. Prior to exposure of any live pipeline the Contractor shall erect a suitable andsubstantial barrier to prevent any damage to QP (Oil & Gas Operations) pipelines.This is particularly important where there are heavy vehicles in the vicinity and thepossibility that removal of the bund for trenching operations opens up an illegalvehicle crossing.

    When backfilling an exposed section of pipeline, naturally occurring soft dune sandshall be used and the pipeline shall be covered and re-bedded all round with150mm minimum of sand. The remaining height of the bund will be made up ofselected desert fill with particle size not exceeding 150mm free organic material.QP (Oil & Gas Operations) Engineer shall witness the backfill work, particularly thesoft sand bedding operation.

    7. When trenching between pipelines in the same easement, vehicle access betweenthe pipelines must be maintained.

    8. The maximum length of exposed unsupported pipeline must not exceed seven (7)metres. When it exceeds five (5) meters, a central substantial wooden support shallbe installed with a minimum 10 mm thick rubber shoe contacting the pipe.

    9. When the bund is removed from any existing line its buried route shall be clearlyindicated by pegs and warning signs.

    10. Any damage to the pipe external protecting wrapping caused by the Contractor willbe repaired in strict accordance with QP (Oil & Gas Operations) procedure at theContractors cost.

    11. Provision of a permit-to-work by QP (Oil & Gas Operations) does not release theContractor from obligation of obtaining relevant permits to expose or work near

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    utilities/facilities not under QP (Oil & Gas Operations) area of responsibility.Examples - QGEWC, Q-Tel etc.

    12. CONTACT LIST TEL. NO. BLEEP NO.CONTROL

    Head of Maint. (Oil & Gas Export) 92042 (436669)

    Head of Gas Distribution 774243 92057 (343232)

    Gas Distribution Supervision (Doha) 774389

    Gas Distribution Supervision (Mesaieed)774356

    Gas Distribution Control Room-Normal 774274

    Emergency 774888

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    SECTION 5 - STREET LIGHTING WORKS

    PART I

    GENERAL

    5.1 Introduction

    All of the works associated with the street lighting installation shall be carried out inaccordance with the QCS 2007, CIE, latest BSEN, IEC specifications and "Regulations forthe Lighting of Roads for Motorised Traffic" and the latest specifications issued by theRoads operation and Maintenance Department Street Lighting Division. Contractors aredeemed to be in possession of these regulations and the latest specifications.

    5.2 Foreword

    The above Installation Specifications are a broad outline of the nature the variousinstallations to be constructed. They do not provide detailed information on every aspectof the works. Tenderers not already acquainted with the Engineers System may if they

    wish, request in writing for on-site visit to familiarize themselves with any specific details.No variations will be permitted on the nature of any part of the works, arising out of theContractor's misunderstanding of it. For installation works, Contractor should followstandard procedure recommended by the manufacturer & agreed by the EngineersEngineer.

    5.3 Scope

    All the works to be carried out under this Contract shall comply with the followingInstallation and Maintenance specification, attached hereto:

    a) The Specification for Installation of Cables, Joints and Terminations of Street LightingSystems.

    b) The Specification for the Installation of Street Lighting Columns.

    c) The specification for the installation of Street Lighting Feeder Pillar.

    d) The specification for Maintenance of existing street lighting system

    5.4 Scope of Work

    Works related to the Street Lighting provided for in this specification shall include thesupply, installation, testing, commissioning of street lighting system, putting intosatisfactory operation any or all of the following system as required by the projectdrawings and maintenance of the existing street lighting system. The works are to be

    carried out throughout Qatar.

    5.4.1 Installation, testing, commissioning of street lighting system

    a) Street Lighting (L.V./M.V) Cables, cable joints and road crossing ductsb) Street Lighting Feeder Pillar and componentsc) Lighting Installations Conventional type, high mast and decoratived) Columns & components, luminaires and lampse) Earthingf) Installation Testing

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    g) Equipment data

    5.4.2 Maintenance of existing street lighting system

    i. Emergency Maintenanceii. Removal/ shifting /Replacement of columns, decorative columns & high mast

    including components or only luminaries and lamps.

    iii. Removal/ shifting /Replacement feeder pillar and/ or its componentsiv. Testing, detection and rectification of underground cable faults

    5.4.3 Periodic Maintenance

    i. Mass replacement of lampsii. Mass cleaning of Luminaires

    5.4.4 Special Maintenance

    i. Shifting of columns, decorative columns & high mast including componentsii. Shifting of Feeder Pillar and components

    The detailed information of various works involved is as illustrated in the Section G - Bill ofQuantities. The equipment supplied shall include all necessary items for a completeinstallation, which will give satisfactory operation not withstanding errors and omission.The equipment listed in the documents is, therefore, indicative and not limitative.

    5.5 Technical Requirements

    All works carried out shall be in accordance with the requirements of these specificationsso that their true meaning and intent are fulfilled. Minor deviations from the drawings maybe made to accomplish this but no change shall be made without written approval of theRoads Operation and Maintenance Department - Street Lighting Division.

    Regulations and Standards: All electrical works shall comply with the Qatar wiringregulation, QGWEC/ KAHRAMAA regulations & standards, Qatar ConstructionSpecification, relevant standards and specification issued by the appropriate authorities inthe State of Qatar and the requirements of Roads Operation & Maintenance Department -Street Lighting Division.

    All equipment and materials supplied for the project shall be manufactured in compliancewith the latest standard of BSEN, IEC or equivalent and here in after referred to asStandards. Acceptance tests shall conform to the above-mentioned Regulations andStandards.

    5.6 Approved Contractors

    All Street Lighting works shall be carried out by a Contractor or Sub-Contractor approvedby Roads Operation and Maintenance Department, Street Lighting Division, Proof of suchapproval shall be required in writing prior to the works commencing on site and the nameof any Sub-Contractor to be used shall be entered in Appendix D of Section D TenderTechnical Deliverables when the Tender is submitted.

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    5.7 PLANT AND STAFF

    5.7.1 PROJECT MANAGEMENT STAFF

    Tenderers must, at the time of Tender present details of Senior Project Management andSite Supervisory Staff so that their competence can be assessed. It is accepted that thestaff actually employed may not be those originally proposed but the actual staff must be

    of at least the same level of competency. All the staff mentioned in the tender will bephysically examined. Tenders will be rejected where the quality and/or quantity ofSupervisory Staff do not meet the requirements of the Engineer.

    5.7.2 TECHNICAL STAFF

    All Technical staff shall be adequately skilled and experienced in the specific trades forwhich they will be employed in the contract. All such staff that would be required to receiveSafety Documentation from the Engineer must have adequate knowledge of spoken andwritten English.

    5.7.3 APPROVAL OF STAFF

    5.7.3.1 APPROVAL OF PROJECT MANAGEMENT

    All Project Managers and Site Supervisor Staff directly associated with constructionactivities will have to be present for interview with the Engineer after the award of Contractbut before any activities commence. The Engineer reserves the right to insist uponreplacement of any staff not considered competent.The approval of the Engineer to the Contractors staff does not release the contractor fromits responsibilities in accordance with the contract.

    5.7.3.2 APPROVAL OF STREET LIGHTING TECHNICIANS

    All Street Lighting Technicians to be used on the contract will be checked physically

    before the award of the contract and required to undertake and pass a trade testconducted by PWA/Ashghal at no cost to the Engineer.

    5.7.4 AVAILABILITY OF PLANT AND STAFF

    Tenderers must complete the attached Schedule of plant in Appendix B of Section DTender Technical Deliverables indicating the plant which will be made available for theContract. Tenderers must appreciate that some of the excavation will have to be carriedout by hand with the assistance of compressors and jackhammers and adequate numbersmust be available for the contract.

    The tenderers must display the ownership and/or access to the minimum plantrequirements for the exclusive use of this contract.

    a) S/L Column delivery vehicles with 8 metre long trailer = 4b) Wheel Loaders or Sand Shovels = 2c) Compressors each equipped with 2 Jackhammers = 4d) Cable Winches = 2e) Cable Drum Trailers = 2

    f) Sand Delivery Lorries with a Capacity to carry15 Cubic Meters of sand/Quarry Scalping = 2

    g) 40 Ton Crane with 35 metre extension = 1 h) Lorry with 5 Ton Lift Arm = 2

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    i) Tower Wagon reachable up to 16 metre high column = 2

    Tenderers must also display minimum staff availability as follows:-

    j) Excavation and Cable Laying Labourers = 15 k) Electrical Technicians including cable jointers = 35 l) Street Lighting Column Erection Staff = 20

    Tenderers will realize that other items of plant, equipment, transport and supervisors willobviously be required and full listing should be made in the appropriate appendices.

    In addition to the above, contractor should have sufficient number of vehicles fortransportation of labourers/patrolling etc. Details of the same should be provided bycontractor. The quantity mentioned above is the minimum requirement, which may have tobe increased in the event of requirement, as per the recommendation of Engineer.

    5.8 SUPPLY OF MATERIALS

    5.8.1 By the Contractor

    Materials can only be disposed as scrap on the written authority of the Engineer. TheContractor shall be responsible for the safe keeping of all materials acquired by him. TheEngineer will not consider any claim for the time in the event of non-availability of any itemof material. All materials supplied by the Contractor must be in strict accordance with theSpecification of the Engineer.

    A list of the Specifications for all items is included with the Contract. It is the responsibilityof the Contractor to ensure that the list of Specifications is sufficiently complete for thematerials required for the works. The absence of a Specification for a particular item ofmaterial may not permit the Contractor to purchase such materials, unless this has beenagreed with the Engineer. The Contractor may not place orders for materials until theitems concerned, and the quantities have been agreed with the Engineer.

    The Contractor is also required to supply: -

    a) All PVC ducts.b) All tools, dies, instruments and equipment for his own use.c) All sub-grade and sub-base material that the Contractor shall collect from

    approved sites.d) All consumable materials i.e. bonded rag, PVC tape etc.e) All reinstatement materials i.e. tarmac, deserts fill.f) All Marker Tapeg) All concrete as required by relevant Specifications.

    5.8.2 MATERIAL SUPPLIERS

    Certain materials may be purchased only from manufacturers who have pre-qualified bythe Engineer for the supply of such materials, having been tried for reliability in thesystem.

    Certain manufacturers may be excluded from providing materials for use in Qatar either tothe Engineer, or in respect of any Contractor employed by the Engineer, or any otherorganization installing equipment which may be inherited by the Engineer, or connected tothe Employees system, during the tenure of the contract.

    The issue of Pre-qualification is on-going. At any time new pre-qualifications may be

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    issued for materials not previously subject, or manufacturers added to, or deleted fromexisting lists. The current lists of pre-qualified items and the lists of pre-qualifiedmanufacturers are included with this Contract.

    The Engineer reserves the right to amend the lists, or include new lists up to the time ofaward of Contract.

    The Engineer reserves the right to exclude any particular manufacturer or to refuse toaccept materials from any manufacturer throughout the period of the Contract, providedthat there is a clear case of mal-practice by the said manufacturer.

    5.8.3 APPROVAL TO PURCHASE MATERIALS

    No materials shall be purchased without the written agreement of the Engineer.

    The Contractor shall refer to the Engineer the manufacturers technical submission andthe schedule of delivery. This shall apply, in the first instance in respect of themanufacturer whose submission is preferred by the Contractor.

    In the event that the Engineer refuses to approve this submission, further submissionsmay be made.

    The Engineer reserves the right to refuse approval if not satisfied with the technicalsubmission.

    The Engineer may also refuse approval if, in his opinion the manufacturers deliveryschedule is such that it may appreciably delay the Contract.

    5.8.3.1 Approval Procedure

    The Contractor shall not order any equipment before the approval of the Engineer inwriting. Approval procedure shall be as follows: -

    a) Contractor submits his proposal to the Engineer in triplicate. This submission shall becomprehensive and clearly state any manufacturers deviations from the specification.Manufacturers literature with the submission shall be original and not photocopies.

    b) The submission shall be reviewed by the Engineer.

    c) After addressing the Engineer comments, the submission shall be submitted to RoadsOperation and Maintenance Department - PWA/Ashghal to obtain the approval.Approval shall be transmitted to Contractor in writing.

    All submissions shall give clear, detailed characteristics of the equipment proposed,together with calculations where necessary including catalogue identification reference.

    Documents shall be in English and Arabic languages.

    Public Works Authority approving authority reserve the right to direct the contractor toprovide equipment of a make and type which is essential to achieve the designed criteria.

    The Contractor shall at his own expense, present the samples to the Roads Operationand Maintenance Department of Asset Management Affairs each type of equipment to beused, complete with its auxiliaries which shall exactly conform to the specification.Column with auxiliaries will get inspected on the project sites. The samples should onlybe submitted after approval of their technical characteristics.

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    Approval of samples by PWA/Ashghal, does not in any way relieve the Contractor of hiscontractual obligation in respect of the suitability of the equipment or its final performanceonce installed, and the co-ordination of the elements into a fully operational installation.

    After receiving the equipment, the Contractor shall arrange to get examined and approvedall the equipment by PWA/Ashghal before installation.

    5.8.4 INSPECTION OF MATERIALS

    Materials, including capital plant, purchased by the Contractor remain his property untilthey are handed over to the ownership of the Engineer. The Contractor is responsible forcollecting imported material and delivering it to his Stores. This responsibility shall includethe preparation of all documentation and payment of all dues required releasing thematerial into his possession.

    The received material shall be jointly inspected by the Contractor and the Engineer beforebeing released from the Contractors Stores, and handed over to the Engineer. TheEngineer shall direct the Contractor to make delivery of the approved materials either tothe Govt. Stores or to the site as required in each instance.

    The Contractor shall render all reasonable assistance to the Engineer concerning theinspection of the materials.

    The Engineer reserves the right to refuse approval of the materials in the event that:

    a) It originates from a manufacturer not previously approved.b) It originates from a country not previously approvedc) It does not comply with the Engineers Specification.d) It is defective.

    Approval by the Engineer following inspection does not relieve the Contractor of his

    obligations in this Contract to ensure that all materials are satisfactory, are in compliancewith the Engineers Specification, and are free from defects.

    5.8.5 STORAGE OF MATERIALS

    All materials acquired by the Contractor for the works shall be kept in suitable Storesbelonging to him. These shall be defined as:

    5.8.5.1 For Cable drums, a level area free from materials such as stones, this could abrade anddamage the materials. The whole area shall be surrounded by an adequate securityfence with restricted personnel access.

    5.8.5.2 For all other materials, such as 3c Flexible cable, Luminaires, control gear components,

    lamps, Anchor Bolts, Distribution Boards, Feeder Pillars, Joints consumables, MarkerTape, Cable Glands and street lighting Cut-outs, a building with suitable storage facilitiescomprising racks, shelves and bins, where the materials can be protected from directsunlight, wind blown debris and rain shall be provided. The building shall be secure, withrestricted personnel access. Resin materials for joints and other sensitive materials shallbe stored at a humidity and temperature not higher than that recommended by themanufacturer and not such that it may significantly affect the life of the material.

    5.8.5.3 Street Lighting Columns may be stored outside, but in the secure area, by means ofsuitable wooden supports, in such a manner that the column is not in contact with the

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    ground such that no damage occurs. The columns should be covered with plastic or othermaterial.

    5.8.5.4 Cement shall be stored clear of the ground and shall be kept dry at all times duringstorage.

    5.8.5.5 The Contractor shall employ a Storekeeper who will, at all times maintain an up to date

    inventory of all materials belonging to the Engineer and the Contractor, and record detailsof usage.

    The Engineer shall have access to the Stores at all times within normal working hours andreserves the right to reject materials which have been stores in manner likely to result indamage or deterioration of the materials.

    The Contractor shall be wholly liable for replacement of damaged or deteriorated materialand no claims in respect of loss of time due to non-availability of such materials will beconsidered.

    5.8.6 DISPOSAL OF SURPLUS MATERIALS

    All surplus materials shall be cleared from site and disposed of, by and at the expense ofthe Contractor. All formal procedures lay down by the Municipality, Roads Operation andMaintenance Department, Engineer and such other parties as may be involved shall becomplied with in full.

    All surplus materials and spoil shall be removed from the site within seven days of thebackfilling except where spoil impedes vehicular or pedestrian thoroughfares in whichcase surplus spoil shall be removed from site as soon as possible but in no circumstancesin a period longer than 48 hours.

    All surplus materials and spoil from site shall be cleaned from site and used to backfill adesignated area in Abu Hamour, or other sites nominated, by the Public Works Authority.

    In case where ground water is encountered the Contractor shall be wholly responsible forthe removal and disposal of the water including the provision of pumps, tankers and anyother equipment necessary. Water shall not be disposed of into any drains, sewers oronto any land or property without the approval of the owners.

    In the event of Contractors non-compliance with this Clause a penalty of QR. 200/- perday will be imposed. The Engineer is entitled to have such clearance carried out by othersand to deduct such costs from any monies due or which may become due to theContractor. All usable surplus materials to be handed over to MD Store immediatelyafter completion of works or can be transferred to contractors stores as per Engineersinstruction after proper records.

    5.8.7 PROGRAMME OF WORKS

    The Tenderer shall submit his proposed program of works based on the total quantitiesmentioned in the tender .The programme of work should be done through existing projectplanner like PRIMAVERA or equivalent showing successor and predecessor the cost ofsuch provision should be inclusive and part of street lighting works as described in SectionE Part 3 Programme Requirements.

    After the successful award of the contract the contractor has to submit programme ofwork for each Work Order issued specifying clearly start and finish date within threeworking days. The contractor should complete the works as specified in the programme

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    approved by the Engineer. For each Work Order, a penalty will be imposed according tocontract clause 47(1) as per the amount displayed on Appendix A of Form of Tender, ifthe contractor fails to complete the works on time.

    5.8.8 REMOVAL OF EXISTING HIGHMASTS, COLUMNS, LUMINAIRES & COMPONENTS

    5.8.8.1 Existing high masts, columns, luminaire, feeder pillar and components shall be removed

    under supervision of Street Lighting. Existing cables shall be disconnected and insulatedand covered to the satisfaction of Street Lighting prior to removal of the columns.

    5.8.8.2 All lamps, luminaries and fittings shall be removed before excavating around the column.The columns shall be supported by tie ropes at all times.

    5.8.8.3 The Contractor shall carefully excavate existing material from around the column base,including concrete.

    5.8.8.4 The columns shall be lifted from the foundation by means of a crane approved by StreetLighting. The foundation shall be removed/ broken as required and backfilled with suitableapproved material.

    5.8.8.5 All columns, cables, lamps and luminaries to be removed under the Contract shall remainthe property of Street Lighting. Such items are to be delivered to PWA/Ashghal Stores.Proof of delivery should be obtained by a signed receipt from PWA/Ashghal Storeswitnessed by the Engineer. The contractor is responsible to remove and transfer toPWA/Ashghal stores the materials in good condition. The contractor should pay the costfor each item if any damage caused to street lighting materials during removal ortransportation.

    5.9 AS-BUILT DRAWINGS

    5.9.1 Within thirty days from the date of completion of the whole works or within one week forthe each Work Order consist of new installation, maintenance and modification works.

    The Contractor shall provide fully detailed "as-built" Drawings in respect of all sections ofwork completed together with relevant operating and maintenance instructions. TheDrawings shall:-

    a. Fully indicate with accurate dimensions the sizes, types and position of equipment,cables, ducts, joints, feeder pillars etc., with particular regard for the need toaccurately locate buried cables after completion.

    b. Show the circuit arrangements for the Street Lighting.c. Show full details, ratings and duty of each item of equipment.d. Include any other relevant information.

    5.9.2 The Contractor shall submit, within the time stated above, two copies of the RecordDrawings for the approval of the Engineer. Upon and after receipt of such approval the

    Contractor shall provide one set of reproducible transparent negative Drawings, and twosets of prints on paper along with soft copy to the Engineer for his retention.

    5.9.3 In addition to the foregoing, the Contractor shall provide in each distribution unit (StreetLighting Feeder Pillar (SLFP)) a good quality print on paper showing the street lightingdistribution line diagram and street lighting Layout plan for the particular SLFP. Theseprints shall be mounted on the inside of the door of each distribution unit (SLFP) and shallbe laminated to prevent undue deterioration.

    5.9.4 In order to achieve accurate Record Drawings all relevant information relating to the

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    works shall be entered on to Drawings kept for the purpose immediately the work hasbeen carried out. The marked prints shall be available for inspection at the Contractor'ssite office at any reasonable time during the progress of the Works.

    5.9.5 The Contractor shall submit an Asset list showing list of assets added into the system(including removal and replacement) in standard format agreed upon and approved bythe Engineer and PWA/Ashghal.

    5.9.6 The contractor shall update the drawings in soft copy of the existing street lighting systemavailable with the PWA/Ashghal incorporating new installation and modifications(including removal) carried out by the contractor.

    5.10 TESTING AND COMMISSIONING ON SITE

    5.10.1 In addition to the requirements of the Conditions of Contract all testing and commissioningshall be carried out according to the requirements of the relevant BS., CP., IEE., IEC,CIERegulations, or other standards and regulations as may be stated or implied in thisSpecification.

    5.10.2 Each completed system with the installation shall be tested as a whole under operatingconditions to ensure that each component functions correctly in conjunction with the restof the installation.

    5.10.3 The Contractor shall afford access at all times to the Ashghal and Electricity NetworksDepartment to enable them to inspect work during and after erection and to be present atall tests.

    5.10.4 Lighting measurements shall be carried out at site as per CIE standards and regulationsto conform with the lighting level requirement for Expressways, Main roads, service roadsetc. as specified herein of this specification.

    5.11 STORAGE OF PLANT AND EQUIPMENT

    5.11.1 All plant and equipment shall be stored off the ground under weatherproof cover ready forincorporation in the works. All electrical apparatus shall be examined and cleaned beforeinstallation. All open conduit ends shall be fitted with plastic caps or suitable protectivecovering to prevent the ingress of foreign matter. All drums with cables shall be protectedfrom direct sunlight.

    5.12 SPECIAL REQUIREMENTS

    5.12.1 All notices to be given by the Contractor shall be in writing and delivered by hand.

    5.12.2 The Contractor shall consult the Department's Engineer not less than one month before itis proposed to commence work to ascertain whether any underground installations will be

    affected by the proposed work, in which event the Contractor shall make all necessaryarrangements with the Department to safeguard the installation.

    5.12.3 The Contractor shall give at least one week's notice in writing to the Department'sEngineer of the dates upon which it is intended to operate plant or equipment or carry outany work for which permission has been given in writing by the Department's Engineer;such operations of work shall only be carried out in the presence of the Department'sEngineer unless notice shall have been in writing from the Department's Engineer thatthey do not require to be present.

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    5.12.4 The Department may require work to be executed on their installation during the period ofthe Contract; the Contractor shall afford all facilities to the Department's contractors orworkmen until their diversion work is complete. The Contractor shall co-ordinate the workof the Department and his own activities and when necessary shall amend his programmeof working to suit all requirements of the Department in connection with their diversionwork and shall keep the Engineer informed of all arrangements made.

    5.12.5 The Contractor shall locate and mark with suitable posts all the Department'sunderground installations that are within the area of the Works and shall ensure that suchmarkers are maintained in their correct positions at all times; the Contractor shall advisethe Department's Agent of any installation not found where shown on the Drawings, orfound but not shown or found damaged or subsequently damaged.

    Note; The contractor should execute and complete cable faults and other street lighting

    works anywhere in the state of Qatar, as per instruction from the Engineer. The

    cable fault may be single and require 1 meter of cable. PWA/Ashghal have a limited

    number of as built drawing and will be provided in case the fault occurs within the

    area of drawings available and the contractor should make their own copy for their

    reference. In case where the fault has occurred and PWA/Ashghal have no AS

    BUILT drawings, then the contractor has to trace the cable by using cable tracing /testing equipment / make trail holes if required and locate the cable fault. The

    contractor should include all the above in his rate in the Bill Of Quantities.

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    PUBLIC WORKS AUTHORITY- ASSETAFFAIRS

    ROADS OPERATION AND MAINTENANCE DEPARTMENT

    STATE OF QATAR

    Installation of Street Lighting System & Decorative Type Columns

    PART II

    INSTALLATION AND MAINTENANCE SPECIFICATIONS

    LIST OF CONTENTS

    1.THE SPECIFICATION FOR INSTALLATION OF CABLES, JOINTS ANDTERMINATIONS OF STREET LIGHTING SYSTEMS

    2.

    THE SPECIFICATION FOR THE INSTALLATION OF STREET LIGHTING

    COLUMNS

    3.THE SPECIFICATION FOR THE INSTALLATION OF STREET LIGHTING FEEDERPILLAR

    4.THE SPECIFICATION FOR MAINTENANCE OF EXISTING STREET LIGHTINGSYSTEM

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    PUBLIC WORKS AUTHORITY- ASSETAFFAIRS

    ROADS OPERATION AND MAINTENANCE DEPARTMENT

    STATE OF QATAR

    1. SPECIFICATION FOR THE INSTALLATION OF CABLES, JOINTS AND TERMINATIONS

    OF STREET LIGHTING SYSTEMS

    SCOPE

    The scope of this Specification covers the Code of Practice for the Installation of StreetLighting Underground Cables and Associated Joints and Terminations.

    1.1 CABLE INSTALLATION

    The Trench shall be excavated 60 cm deep x 50 cm wide as shown in the Street LightingDrawings enclosed. For street lighting cables hand pulling may be used except in cases oflong lengths where the Engineer may decide a Winch shall be used. Where a Winch isused then a swivel shackle and cable stocking must be used. The winch shall have amaximum pulling tension of 2.0 ton. Cable Rollers, Corner Rollers and Skid Plates oftypes approved by the Engineer shall be used and placed at a maximum spacing of 1.5

    metre and at more frequent intervals if so directed by the Engineer. When installing themain cable the cable drum shall be mounted vertically on a suitable drum trailer or ondrum jacks and spindle. Attendance at the drum to prevent slackening of the turns duringthe pulling of the cable is absolutely essential. A ramp shall be placed in front of thedrum for cable pulling. The ramp shall have a minimum height of 1500 mm and aminimum width of 1000 mm. A slope not greater than 30 degrees to the horizontal isrequired as the cable is paid off the drum on to the ramp. Cable shall be pulled from thetop of the drum. Where Cable Trailers are fitted with a ramp detail shall be supplied tothe Engineer for his approval prior to use.

    1.1.1 Cutting and capping of Cables

    Where part of a drum of cable is installed the cable shall be cut and both cut endscapped with an approved cap (usually Heat Shrinkable).

    1.1.2 Covering of Cables

    All cables shall be covered with quarried limestone or dune sand on the same daythey are laid, similarly for joints on the day they are completed. In addition to cablebedding, the quarried limestone scalping or dune sand may be used as sub gradeand or sub base.

    The Contractor may also be required to supply and install cementation material asa duct surround, sub grade and or sub base. The cementation material shall bean all in aggregate complying with QCS 2007 with an all in aggregate to cementratio of 10:1 and this shall be installed in semi dry manner.

    The engineer will instruct the Contractor in the selection of materials to be usedon each specific project.

    Where quarried limestone is used it must comply with the following specification:

    a) This material is to be used for providing bedding and blinding (Over-cover)for Street Lighting cables in trenches excavated in the natural ground. It isto be used in substitution for dune sand as it appears in other Specificationsfor Cable Installation.

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    b) It shall comprise of quarried limestone materials having particle sizes thatvary from 5 mm down to dust. There being a homogeneous mixture of allparticle sizes.

    c) The materials shall have specific mechanical and thermal resistive qualitiesare as defined below: -

    i. Thermal Resistivity

    The material shall be subject to 90% compaction, using the optimumamount of water. After subsequent drying, such that the water contentdoes not exceed 2% of the weight of the sample the thermal resistivity ofthe material shall not exceed 2.0 C M/Watt

    ii. Mechanical Qualities

    The material shall have mechanical qualities that meet therequirements of the Qatar National Construction Standards QCS 2007,Road Works Section, current edition as published by the QGOSM.

    iii. Tests:

    Tests will be made by the Material Testing Laboratory of the Public

    Works Authority, situated at Abu Hamour or a RD. approved Laboratory.The tests will be made on samples submitted during the course of thecontract, the samples being supplied by the Contractor at thecontractor's expense.

    1.1.3 SPACING BETWEEN CABLES

    Street Lighting cables shall be laid with a horizontal spacing of 0.3 metre betweencentres and with a minimum distance of 0.15 metre from the trench wall.

    a) High Voltage and Medium Voltage/ Low voltage Cables in same Trench

    Where Street lighting cables are to be laid adjacent to 11000 volt and 1000 voltcables the spacing between the Street lighting cables and 11000 volt and 1000volt cables shall be 0.75 metre.

    b) Reduction of Spacing

    Any reduction from the above spacing can only be permissible for lengths of 10

    metres or less.

    1.1.4 PROTECTION OF UNDER GROUND CABLES

    Before the street lighting cable is installed a bed of 150 mm depth after compaction ofdune sand or quarried limestone is placed in the trench.

    After the cable is installed 150 mm depth after compaction of dune sand quarriedlimestone is placed in the trench, over which the Marker Tape will be installed.

    1.1.5 BACKFILLING AND REINSTATEMENT

    All trenches shall be back-filled, compacted and reinstated in accordance with therequirements of the Roads Department. This is illustrated in the enclosed drawings.

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    Typical case illustrations are shown with the tender documents. Tenderers must beaware that excavated material may only be used as desert fill, backfill where stonesand rocks larger than 50 mm across have been removed from the proposed backfillmaterial.

    Where the engineer condemns the excavated material as being unsuitable for backfillthen the contractor shall import desert fill from a Roads Department approved

    location, and install as required.

    All reinstatement shall be carried out in accordance with the appropriate S. L drawings. In the case of marble floor tiles the contractor shall proceed as follows:

    a) Excavate any back-filled material and remove from site to tip. b) Trim, water and compact formation of sub-base to finished profile of sub grade

    already installed. c) Prepare and lay 100 mm thick layer of blinding concrete i.e. 1:5:3 of sulphate

    resisting concrete 350 Kg/m3, washed sand and 12 mm aggregates.d) Prepare and lay 20 mm screed i.e. 1:3 of sulphate resistant cement and washed

    sand. e) Lay approved quality CARRARA marble floor tiles 20mm thick in size and

    colour as found on site. f) Point edges with white cement in line and level to the existing.

    1.1.6 COMPACTION

    Where the trench is to be completed with reinstatement of either tarmac or pavingslabs then no excavated spoil may be used as part of the sub-grade or sub base.

    Where the trench is excavated within a highway reservation, which includes thecentral reservation and also the unmade verge, then the full requirements forcompaction and material quality as specified in the Code of Practice andSpecification for Road Openings issued in January 2011 shall apply.

    This states a compaction requirement of 95% maximum dry density at the top of thecable bedding and surround through to the top of sub-grade. Through the sub base,a 100% maximum dry density is necessary.

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    1.1.8 PROTECTION OF EXCAVATIONS

    The Contractor shall comply with all requirements of the "Traffic Control at Roadwork"as issued by the Roads Department for marking, lighting and protection ofexcavations.

    It is the responsibility of the Contractor to ascertain the requirements of the TrafficPolice Department and to comply fully with these requirements. No additionalpayments will be authorized under any circumstances for the marking, lighting orprotecting of excavations.

    Where carriageway works and road crossings are performed the Contractor shallprovide steel plates of sufficient size and quality to permit the safe passage of Trafficand the plates shall be so placed (and if necessary fixed) to permit reasonable trafficflow.

    All doorways, gates and entrances shall be kept clear with full access. Whereexcavations impede pedestrian access crossing boards shall be provided. Crossingboards shall be 1250 mm wide with a handrail on both sides at 1 metre height andguard rails on both sides at 0.5 metre height. Steel plates shall be used to allowvehicular access to premises etc. Ducts will not be installed at entrances to premises

    except on the express instructions of the Engineer.

    Materials excavated shall be placed so as to prevent nuisance or damage. Wherethis is not possible, the material shall be removed from site and returned for backfillingon completion of cable laying at the Contractor's expense. In cases where theexcavated material is not to be used for backfilling trenches it must be removed fromsite on the same day as it is excavated. Surplus materials shall only be disposed of atGovernment approved sites e.g. Ministry Of Municipality & Urban Planning site at AbuHamour. At the time of contract award the Contractor shall contact the Ministry ofMunicipality & Urban Planning and the Public Works Authority to ascertain otherapproved sites from them.

    1.1.9 SITE CLEANLINESS

    a. Empty cable drums shall be either

    i) Scrapped by the Contractor, or

    ii) Returned to the Contractors stores. In either case all drums shall beremoved from site immediately on completion of cable laying.

    b. On completion of jointing works all surplus materials shall be removed fromsite by the Contractor and either

    i) In the case of Capital equipment is returned to the Contractors Stores.

    ii) In the case of insulation, armouring, compound tins etc., be scrappedby the Contractor.

    1.1.10 ROAD CROSSING

    Road crossings shall be installed as per street lighting divisions requirement exceptwhere specific instructions are given by the Engineer.

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    1.1.11 SPECIFICATION OF STREET LIGHTING CABLES

    a) 10/16/25/35 sq.mm x 4 core XLPE/SWA/PVC Cable of stranded copper conductor

    600/1000V A.C.

    Cable must be low-tension 600/1000V multi core stranded copper conductors. Insulatedwith XLPE, core laid-up, extruded PVC bedded, steel wire armoured and PVC sheathed

    overall - underground cable to BS 5467:2008 or equivalent.

    The cable must be able to withstand vigorous climatic conditions of ambient temperatureup to 50

    oC. (The temperature can be accompanied by a relative humidity of up to 100% at

    30oC).

    The cable will buried in sand and laid partly in duct at a depth of 600mm. Groundtemperature varies from 35/40

    oC in summer to 8/12

    oC in winter. Cable drums may be

    stored in the open for up to 1 year and will be exposed to direct sunlight. Therefore,cables must be so designed as to withstand these conditions without deterioration of theelectrical and mechanical properties.

    Conductors: High conductivity stranded copper - shaped conductors complying with BS:6360:1981 (or equivalent) with XLPE Insulation.

    Bedding: Extruded layer of PVC compound. Colour of core identification: Red, Yellow, Blue & Black

    Armouring: Single layer of galvanized steel wireFinish (over sheath): Extruded black PVC over sheath which conform to BS: 6746 (type9). The external surface to be embossed with the voltage designation, cable type & size,year of manufacture, manufacturers name and property of PWA/Ashghal

    Packing:

    Sealed wooden cable drums with name plate stating Manufacturers name, country oforigin, Manufactures serial number, Cable type and size and Length of cable per drum.

    b) Specification for 6sq.mm x 3 core XLPE SWA PVC Cable of stranded copper

    conductor 600/1000V A.C.

    Cable must be low-tension 600/1000V multi core stranded copper conductors. Insulatedwith XLPE, core laid-up, extruded PVC bedded, steel wire armoured and PVC sheathedoverall - underground cable to BS 5467:1977 or equivalent.

    The cable must be able to withstand vigorous climatic conditions of ambient temperatureup to 50

    oC. (The temperature can be accompanied by a relative humidity of up to 100% at

    30oC).

    The cable will buried in sand and laid partly in duct at a depth of 600mm. Groundtemperature varies from 35/40

    oC in summer to 8/12

    oC in winter. Cable drums may be

    stored in the open for up to 1 year and will be exposed to direct sunlight. Therefore,cables must be so designed as to withstand these conditions without deterioration of theelectrical and mechanical properties.

    Conductors: High conductivity stranded copper - shaped conductors complying with BS:6360:1981 (or equivalent) with XLPE Insulation.

    Bedding: Extruded layer of PVC compound.

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    Colour of core identification: Red, Yellow, and Blue

    Armouring: Single layer of galvanized steel wire

    Finish (over sheath): Extruded black PVC over sheath which conform to BS: 6746 (type9).The external surface to be embossed with the voltage designation, cable size and

    manufacturers name.

    Packing:

    Sealed wooden cable drums with name plate stating Manufacturers name, and country oforigin, Cable type and size and Length of cable per drum.

    c) Specification for PVC Insulated PVC Sheathed Circular flexible Cable of Copper

    Conductor 2.5 sq.mm x 3 core 300/500V a.c. Heat Resistant type 85C

    Cable should be of conductors of high conductivity copper stranded wires, insulated withPVC compound, three cores, green/yellow, blue and brown, twisted together filled andsheathed with PVC compound, heat resistant type according to BS 6141:1991 Table 15,300/500V a.c.

    Packing:

    Sealed wooden cable drums with name plate stating Manufacturers name, country oforigin, Manufactures serial number, Cable type and size and Length of cable per drum.

    1.1.12 JOINTING

    All jointing shall be carried out to the Jointing Manual and/or to the instructions of theEngineer and only by approved Jointers. All jointing shall be carried out in accordance

    with the Dept. of Electricity Networks Safety Rules.

    1.1.13 INSPECTION OF EXCAVATION & CABLE INSTALLATION WORKS

    The Engineer requires carrying out inspections at the following stages:

    i) Completion of Excavations.

    ii) Completion of bedding with quarried limestone prior to cable installation.

    iii) Cable Installation.

    iv) Completion of over bedding with dune sand or quarried limestone over cables andtape etc.

    The Contractor must not progress from one stage to the next of the above without theapproval of the Engineer. It shall be the responsibility of the Contractor to arrange for theinspections with the Street Lighting Engineers.

    1.1.14 RECORDS

    The Contractor shall at his own expense supply to the Engineer, as built records of allcables shown accurately on 1:500 or 1:1000 scale drawings, as decided by the Engineer.

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    i) The position and depth of all cables with measurements from kerb lines or permanentstructures and finished level.

    ii) Section for multi-cable trenches with each cable identified.

    iii) Joint positions with measurements from kerb lines or permanent structures.

    The records shall take the form of either permanent transparent sheets or modifications tothe Engineers existing records as decided by the Engineer. Also, the records in softcopies either in the form of separate compact disc shall be submitted or Engineersexisting soft copy records are to be updated as decided by the Engineer.

    Diary Sheets for work completed will not be authorized until such records have beenpresented to the Engineer and accepted.

    The quality and format of these drawings will be consistent with the current standards ofthe Engineer.

    The Surveyors and Draughtsmen to work on the contract shall have a minimum of 8 years

    general working experience with at least 4 years experience in plotting, surveying andrecording of urban and rural Electricity Distribution Networks or similar works.

    Tenderers shall submit Curriculum Vitae and authenticated copies of qualifications andexperience certificates for the Surveyors and Draughtsmen they propose to use.

    1.1.15 CABLE MARKER TAPE

    Marker Tapes shall be used where required for compliance with standard drawings.

    The type shall comply with Specification ED/03-160, and shall be purchased only frompre-qualified manufacturers.

    Samples must be supplied to the Engineer for approval prior to use.

    1.1.16 NON-WOVEN FILTER MEMBRANE

    Where the existing water table is apparent in the completed trench a non-woven filtermembrane is to be installed in a manner that completely encloses the installed cable andthe surrounding sand.

    This filter membrane shall be produced entirely from circular section, continuous filamentsynthetic fibres and shall be thermally bonded and non-woven, complying with thefollowing requirements: -

    Grab Strength 9ASTM 1682 MOD) -- Min. 700NTrapezoidal Tear Strength (ASTM D 1117) -- Min. 300NPuncture Resistance (CBR Test) -- Min 1600N1M Plate Strain Tensile Test:Maximum Load -- 8.0 Kn/MExtension at Maximum Load -- 25%Extension at Break -- 30%Water Flow (1000mm head) -- 501 m2 SEC

    Mean Pre Size (i.e. 50%) -- 70 micronsNominal Weight -- 140 g/m2

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    The filter membrane shall be supplied in 5.3M or 4.5M wide rolls and laid with 0.5Moverlaps. This overlap shall be held together by a thin gauge wire approved by theengineer, so that there is no displacement of the membrane, during the backfill operation.Samples of the membrane must be supplied for the approval of the Engineer prior to use.Tenderers must supply test certificates, not less than 6 months old, from an independenttest laboratory.

    1.1.17 DUCTS

    Where ducts are to be supplied they shall be of the following type, and in accordance withBS 3505 / 3506 or DIN 8062/63Specification.

    Material -- High Impact Resistance PVC

    Internal Diameter -- 150 mm

    Minimum Wall Thickness -- 3.6 mm

    Samples must be provided for approval by the Engineer prior to use.

    1.1.18 ACCEPTANCE TESTS

    Before the Engineer accepts responsibilities for the cable system the Engineer shall carryout the following tests: -

    Street Lighting Cables

    Continuity test and Insulation test by 1000 Volt Megger test for 1 minute.In the case of equipment, which fails the tests all costs for location of the fault, repairand/or replacement shall be borne by the Contractor.

    1.1.19 OIL AND GAS PIPE LINE CROSSINGS

    Where the proposed excavation and cable laying are to cross oil or gas pipe certainprecautions as stipulated by QGPC will be undertaken by the Contractor.

    The cables will always be made to pass under the pipelines such that there is at least 600mm between the cable and the pipe. The cable will be installed in standard DENapproved duct such that the cable may be removed or changed at a later date withoutfurther excavation adjacent to the pipe. Spare ducts shall be installed for future use.

    The Contractor will co-ordinate with QGPC staff and arrange to receive the QGPCexcavation permit. The Contractor will be obliged to hand dig in the area of the pipe tocarefully expose it. The pipe will then be wrapped by the Contractor with 12" thickpolyurethane foam sheeting, which shall be enclosed by the Contractor with wooden

    crating. The QGPC Engineer shall be invited to approve the foam and crating protectionbefore further excavation may continue.

    1.1.20 EXCAVATION REQUIREMENTS

    1.1.20.1 General

    Excavation items whether in the open or in trench have been billed so that all such itemsshall cover excavation in any material including rock.

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    In measuring all excavations the quantities are the net quantities of the voids formed bythe removal of the material excavated in accordance with the Specification, no allowancebeing made for building or shrinkage. The rates for dealing with all excavated materialsshall cover the execution of all specified operations on them in any condition in which theymay be found including this following operations not itemized in the Bills of Quantities.

    a) Loosening of unexcavated material before or in the process of excavation including

    blasting in rock.b) Separating suitable from unsuitable material.c) Incorporating the excavated material as fill in the Works as specified.

    d) Handling all materials and carting to place of deposition.

    e) All double handling.

    f) Protecting the excavations from the weather and ground water including any temporarydrainage.

    g) Excavation of trial holes as directed by the Engineer.

    1.1.20.2 Excavation - Trenches

    In all case depths of trenches, where stated, have been measured from finished ground orcover level to trench invert. Trenches widths are given in the Specification.

    Items for excavation shall include:

    i. All items under Paragraph 1.1.20.1 above.

    ii. Trimming the bottom of the trench.

    iii. Disposal of surplus.

    iv. Timbering, sheeting, strutting and otherwise the sides of the excavation where

    required.

    v. Keeping the excavation free from water including ground water.

    vi. All excavation and backfilling carried out in trenches and pits by the Contractorin excess of the net measurements described in the Contract.

    vii. Maintenance of trenches and pits during testing or because of delaysoccasioned by Public Utilities or their contractors.

    1.1.20.3 Surfacing

    The Contractor shall include in his rate for surfacing the cost of purchasing, transporting,placing and compacting the material in accordance with the Specification and Code ofPractice of Public Works Authority, Highway Maintenance Division.

    1.1.20.4 Ducts Laying and Jointing

    The rates shall include for;

    a) Provision of all ducts including end caps including installation of duct marking tiles.

    b) Laying and jointing of ducts to the correct line and level.

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    c) Provision and installation in each duct of a rat-proof draw wire, at the contractor'sexpense.

    Nature of Works

    Tenderer may expect to be instructed to undertake works in any part of Qatar.

    Consequently the tenderer should anticipated being required to work on any type ofground and in both urban and rural situations and equip himself accordingly to meet allsituations.

    2 -SPECIFICATION FOR THE INSTALLATION OF STREET LIGHTING COLUMNS

    2.1 General

    The scope of this specification covers the code of practices for the installation of streetlighting columns and associated brackets, luminaires, lamps, wiring, cut-outs andterminations. Tenderers must have experience of Erection of High Masts, StreetLighting Columns and Installation of Street Lighting Cables and shall have been Pre-qualified by the Engineer for the contract.

    2.1.1 The contractor shall submit shop drawings including Street Lighting layout drawings,Load Schedule ,Voltage drop calculations , Feeder Pillar schematic diagram, Standarddetails of columns & components, feeder pillar & components etc. along with lightingcalculations as per CIE standards & regulations for approval of the Engineer.

    2.1.2 The Contractor shall install all lighting columns complete as indicated on the Drawings,specified in the Specifications and as described in the Bills of Quantities. Undergroundcables shall be glanded and terminated at electrical cutouts as indicated on the Drawings

    2.1.3 All cabling to and between street lighting column will be 4core x 16 / 4C x 25 /4C x 35mm

    2Cu/.XLPE/SWA/PVC sheathed (Note: - Steel tape armouring will not be permitted).

    No joints in the cable shall be permitted. Damage cable shall be replaced. Cable shallnot be pulled-out to straighten them after laying and cable stockings shall be used for allcable hauling.

    2.1.4 Street lighting cutouts shall be installed within the base termination compartment of eachcolumn and shall be of TPN&E type. Cutout shall have facilities for looping in and outcables and shall accept 4 core cable up to 35 sq.mm. and capacity of 40 Amps (accordingto specification). The cutout shall be of 2 way or 3 way as per the cable networkrequirements.

    2.1.5 Cable connection in the cut-out shall be carried out in a cycle by dividing the load equallyon RY&B to achieve the balanced load on the main.

    2.1.6 Street lighting cable shall be bedded in and surrounded by either dune sand or quarryscalping. A first layer of 15 cm dune sand shall be installed in the trench and then thestreet lighting cable laid. Subsequently, the second 15 cm. layer of dune sand shall beinstalled & compacted and the cable marker tape shall be laid over the dune sand. Finallythe trench may be back-filled with the material suitable from the excavated soil andcompacted.

    2.1.7 All lighting columns shall be earthed through armouring of underground cables terminatedat each column. In addition to the earthing through cable armouring, the lighting column atthe end of each individual underground cable circuit shall be earthed through separate

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    2.2.5 All tools, equipment, vehicles etc. for the Contractor's use.

    2.2.6 Foundation detailed design to suit site conditions incorporating manufacturesrecommendations.

    2.3 Provision of a secure compound centrally located on the site for storage of street lightingmaterials.

    2.4 Establishing and maintain an agreed program and ensuring compliance withPWA/Ashghal procedure during the excavation of the works.

    2.5 Disposal of Surplus Materials.

    All surplus materials shall be cleared from site and disposed off at approved sites. Allformal procedures laid down by the Municipality, Civil Engineering Department, Employerand such other parties who may be involved shall be complied with in full.

    2.6 Other Services and Utilities

    The Contractor shall be responsible for ascertaining the location of any existing orproposed service in the vicinity of the required excavations. The Contractor must notcommence work until he has in his possession (1) Letters from all other utilities statingthat they have no objection to the proposals (2) All relevant drawings and records ofexisting services. The Contractor must comply with all restrictions and conditions laiddown by the service/utility Department. The Contractor will be totally responsible for anycost arising from damages to existing service, plant and property occasioned by hisoperation.

    2.7 Backfilling and Reinstatement

    The Contractor shall carry out all reinstatement immediately on completion of backfillingincluding disposal of excavated surplus materials to an approved off-site in accordancewith QCS 2007 . All excavation, pits including pole pits and trail holes shall be backfilled,

    compacted and reinstated in accordance with QCS 2007 .

    2.8 Protection of Excavation

    The Contractor shall comply with all requirement of Traffic Police Department for marking,lighting and protecting excavations. It is the responsibility of the Contractor to ascertainthe requirement of the Traffic Police Department and to comply with the requirements. Noadditional payment will be authorised under any circumstances for making lighting orprotecting excavation.

    The rates quoted for excavation shall apply to all ground conditions.

    2.9 Setting Out

    The Contractor will mark the centre of poles' pit and obtain approval from the Engineer.

    2.10 Erection of Street Lighting Column and Concreting of Base of Columns

    Columns should be erected exactly vertical at 90