civil delhi24 7

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CONTENTS

TABLE OF CONTENTS

GENERAL TECHNICAL SPECIFICATIONS................................................................................................1

PARAGRAPH 1 - GENERAL......................................................................................................................1 1.1 Definitions ..............................................................................................................................1 1.2 Sequence of Documents ........................................................................................................1 1.3 Abbreviations .........................................................................................................................2 1.3.1 Dimensions and Units ............................................................................................................2 1.3.2 Standards and Organisations..................................................................................................2 1.3.3 Mechanical Abbreviations.......................................................................................................2 1.3.4 Electrical Abbreviations ..........................................................................................................3 1.4 The Site ..................................................................................................................................3 1.4.1 Site .......................................................................................................................................3 1.4.2 Condition of Site ....................................................................................................................4 1.4.3 Access to Site........................................................................................................................4 1.4.4 Clearance of Site ...................................................................................................................4 1.4.5 Prevention of Surface Erosion.................................................................................................5 1.4.6 Care of Water ........................................................................................................................5 1.4.7 Unauthorized Persons............................................................................................................5 1.4.8 Advertising ............................................................................................................................5 1.5 Accommodation and Facilities on Site ...................................................................................5 1.5.1 General .................................................................................................................................5 1.5.2 Accommodation for the Contractor ..........................................................................................6 1.5.3 Offices for the Engineer's and Employer's Representatives .......................................................6 1.5.4 Site Laboratory ......................................................................................................................6 1 5 5 P W t S D i S it P i i 6


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1.10 Datum and Benchmarks .......................................................................................................8 1.11 Setting Out............................................................................................................................9 1.12 Joint Measurement of Works ................................................................................................9 1.13 Documentation to be Provided .............................................................................................9 1.14 Returns of Labour and Plant ...............................................................................................10 1.15 Works Diary ........................................................................................................................10 1.16 Drawings and Documents ..................................................................................................10 1.17 Photographs.......................................................................................................................12 1.18 Contractor's Responsibility for Design ...............................................................................12 1.19 Temporary Works ...............................................................................................................12 1.20 Approval of Contractor's Proposals....................................................................................13 1.21 Contractor's Staff................................................................................................................13 1.22 Assistance to the Engineer .................................................................................................13 1.22.1 General .............................................................................................................................13 1.22.2 Labour ..............................................................................................................................13 1.22.3 Surveying Equipment .........................................................................................................13 1.22.4 Protective Items .................................................................................................................13 1.22.5 Transport...........................................................................................................................14 1.23 Care of Public Utility Services.............................................................................................14 1.24 Testing and Inspection .......................................................................................................15 1.25 Tests on Completion...........................................................................................................16 1.26 Record Drawings ................................................................................................................17 1.27 Operation and Maintenance Manuals..................................................................................17 1.27.1 General .............................................................................................................................17 1.27.2 Operating Instructions ........................................................................................................18 1.27.3 Maintenance Instructions ....................................................................................................18 1.27.4 Minimum Inclusions............................................................................................................18


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1.28.7 Programme of Formal Three Week Instruction Period...........................................................21 1.28.8 Video Tapes of Instruction Sessions ....................................................................................23 1.28.9 Operation of Installed Plant during the Period of Instruction...................................................23

PARAGRAPH 2 - MATERIALS AND WORKMANSHIP - GENERAL ..........................................................24 2.1 General Requirements for Materials .....................................................................................24 2.2 Published Standards ............................................................................................................24 2.3 Proprietary Products ............................................................................................................24 2.4 Approval of Equivalent Materials ..........................................................................................24 2.5 Samples................................................................................................................................25 2.6 Purchase of Materials ...........................................................................................................25 2.7 Works Off-Site ......................................................................................................................25 2.8 Certificates ...........................................................................................................................25 2.9 Transport and Storage, Care of Works .................................................................................25 2.10 Design for Maintenance......................................................................................................26 2.11 Means for Lifting.................................................................................................................26 2.12 Suitability for Duty ..............................................................................................................26 2.13 Wearing Parts .....................................................................................................................26 2.14 Spare Parts .........................................................................................................................26 2.15 Keys....................................................................................................................................27 2.16 Access and Safety Protection .............................................................................................27 2.17 Fixings................................................................................................................................27 2.18 Special Tools ......................................................................................................................27 2.19 Resistance to Vermin..........................................................................................................27 2.20 Identification Labels ...........................................................................................................27 2.21 Resistance to Corrosion and Abrasion ...............................................................................28 2.22 Welding...............................................................................................................................28


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PARAGRAPH 3 - PIPELINE AND SEWERAGE WORKS ..........................................................................30 3.1 General .................................................................................................................................30 3.2 Materials...............................................................................................................................30 3.2.1 Vitrified Clay Pipes and Fittings .............................................................................................30 3.2.2 Concrete Pipes and Fittings ..................................................................................................30 3.2.3 Prestressed Concrete Pipes and Fittings ...............................................................................31 3.2.4 Internal Coating of Concrete Pipes and Fittings ......................................................................31 3.2.5 Asbestos-Cement Pipes and Fittings .....................................................................................31 3.2.6 Ductile Iron Pipes and Fittings...............................................................................................31 3.2.7 Steel Pipes and Fittings ........................................................................................................31 3.2.8 Unplasticized PVC Pipes and Fittings ....................................................................................32 3.2.9 Polyethylene Pipes and Fittings ............................................................................................32 3.2.10

Pipe Bedding Material ........................................................................................................32

3.2.11 Manhole Covers and Frames ..............................................................................................32 3.2.12 Gullies, Gully Gratings and Frames .....................................................................................33 3.2.13 Manhole Step Irons ............................................................................................................33 3.2.14 Manhole Ladders ...............................................................................................................33 3.2.15 Manhole Safety Chains ......................................................................................................33 3.2.16 Manhole Grab Rails ...........................................................................................................33 3.2.17 Marker and Indicator Posts .................................................................................................33 3.3 Excavation of Trenches for Pipelines and Cables.................................................................34 3.3.1 Excavation ..........................................................................................................................34 3.3.2 Support System ...................................................................................................................34 3.3.3 Dewatering..........................................................................................................................35 3.4 Pipelines...............................................................................................................................36 3.4.1 Installation...........................................................................................................................36 3.4.2 Foundation ..........................................................................................................................36


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3.5.2 Precast Concrete Units ........................................................................................................39 3.5.3 Inverts and Benching ...........................................................................................................39 3.5.4 Setting Covers and Frames ..................................................................................................39 3.5.5 Pipes into Structures ............................................................................................................39 3.6 Testing..................................................................................................................................40 3.6.1 General ...............................................................................................................................40 3.6.2 Testing of Pressure Pipelines ...............................................................................................40 3.6.3 Testing of Gravity Pipelines ..................................................................................................40 3.7 Restoration of Surfaces ........................................................................................................41 3.7.1 Classification .......................................................................................................................41 3.7.2 Contractors Damage ............................................................................................................41 3.7.3 Settlement during Temporary Restoration..............................................................................41 3.7.4

Temporary Restoration.........................................................................................................41

3.7.5 Permanent Restoration - Concrete Roads .............................................................................42 3.7.6 Permanent Restoration - Other Roads...................................................................................42 3.8 Disinfection ..........................................................................................................................42

PARAGRAPH 4 - CIVIL WORKS..............................................................................................................44 4.1 Materials...............................................................................................................................44 4.1.1 Fill Material General .............................................................................................................44 4.1.2 Fill Material to be placed below Water ...................................................................................44 4.1.3 Steel Sheet Piles .................................................................................................................44 4.1.4 Cement ...............................................................................................................................45 4.1.5 Aggregates for Concrete ......................................................................................................45 4.1.5.1 General Requirements......................................................................................................45 4.1.5.2 Potential Aggregate - Cement Reactivity ............................................................................45 4.1.5.3 Fine Aggregate ................................................................................................................46


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4.1.10.2 Characteristics of Geo-synthetics .....................................................................................47 4.1.11 Stone ................................................................................................................................48 4.1.12 Concrete Blocks/Bricks for Slope Protection Works ..............................................................48 4.1.13 Clay ..................................................................................................................................48 4.1.14 Geotextile Filter Fabric........................................................................................................48 4.1.15 Sand and Gravel for Underdrain Filters................................................................................49 4.1.16 Gabions ............................................................................................................................49 4.1.17 Structural Mild Steel ...........................................................................................................50 4.1.17.1 Steel...............................................................................................................................50 4.1.17.2 Sections .........................................................................................................................50 4.1.18 Nuts, Bolts and Welding Electrodes.....................................................................................50 4.1.19 Steel Water Storage Tanks .................................................................................................50 4.1.20

Glass Reinforced Plastic Water Storage Tanks ....................................................................50

4.1.21 Aggregates for Roads and Pavement Structures ..................................................................51 4.1.22 Road Base Course.............................................................................................................51 4.1.23 Asphaltic Surface Treatment...............................................................................................51 4.1.24 Aggregates for Asphaltic Surface Treatment ........................................................................51 4.1.25 Bituminous Prime Coat.......................................................................................................52 4.1.26 Bituminous Tack Coat ........................................................................................................52 4.1.27 Asphaltic Concrete .............................................................................................................52 4.1.27.1 Asphaltic Material ............................................................................................................52 4.1.27.2 Mineral Aggregates .........................................................................................................52 4.1.27.3 Coarse Aggregate ...........................................................................................................52 4.1.27.4 Fine Aggregate ...............................................................................................................52 4.1.27.5 Filler...............................................................................................................................53 4.1.27.6 Combined Mineral Aggregate ...........................................................................................53 4.1.28 Concrete Tile Pavement .....................................................................................................53


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4.2.6 Relocation of Utilities............................................................................................................55 4.2.7 Excavation General..............................................................................................................56 4.2.8 Extent of Excavations...........................................................................................................56 4.2.9 Slips, Falls and Excess Excavation .......................................................................................57 4.2.10 Support System .................................................................................................................57 4.2.11 Dewatering........................................................................................................................58 4.2.12 Excavations to be Kept Dry.................................................................................................58 4.2.13 Excavation of Berms and Slopes .........................................................................................58 4.2.14 Excavation of Drains ..........................................................................................................58 4.2.15 Excavation of Roads ..........................................................................................................58 4.2.16 Excavation for Structures....................................................................................................59 4.2.17 Tolerances for Excavation ..................................................................................................59 4.2.18

Preparation of Formation ....................................................................................................59

4.3 Piling ....................................................................................................................................60 4.3.1 General ...............................................................................................................................60 4.3.2 Steel Sheet Piling.................................................................................................................60 4.3.3 Concrete Piling ....................................................................................................................60 4.4 Backfill and Fill .....................................................................................................................62 4.4.1 Fill Material General .............................................................................................................62 4.4.2 Fill Material under Structures ................................................................................................62 4.4.3 Placing and Compaction of Fill and Backfill ............................................................................62 4.4.4 Fill placed below Water ........................................................................................................63 4.4.5 Embankments .....................................................................................................................63 4.4.5.1 General ...........................................................................................................................63 4.4.5.2 Excavation.......................................................................................................................63 4.4.5.3 Embankment Placing........................................................................................................63 4.4.6 Tolerances for Fill ................................................................................................................64


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4.5.1 General ...............................................................................................................................66 4.5.2 Mortar .................................................................................................................................66 4.5.3 Stone Pitching .....................................................................................................................66 4.5.4 Rip Rap...............................................................................................................................67 4.5.5 Gabions ..............................................................................................................................67 4.5.6 Clay Lining ..........................................................................................................................68 4.5.7 Geo-synthetic Fabric Layers .................................................................................................68 4.6 Concrete Work......................................................................................................................70 4.6.1 Storage of Cement...............................................................................................................70 4.6.2 Testing of Cement................................................................................................................70 4.6.3 Records and Returns of Cement...........................................................................................70 4.6.4 Storage of Aggregates .........................................................................................................70 4.6.5

Additives .............................................................................................................................70

4.6.6 Concrete Mixes....................................................................................................................70 4.6.6.1 Quality of Concrete...........................................................................................................70 4.6.6.2 Concrete Mix Design ........................................................................................................71 4.6.6.3 Concrete Mix Design - Underwater Concrete......................................................................72 4.6.6.4 Trial Mixes .......................................................................................................................72 4.6.7 Mixing Concrete...................................................................................................................73 4.6.8 Transporting Concrete..........................................................................................................73 4.6.9 Placing and Compacting Concrete ........................................................................................74 4.6.10 Concrete Placed on Set Concrete .......................................................................................74 4.6.11 Concrete Placed Underwater ..............................................................................................75 4.6.12 Concreting in Unfavourable Weather ...................................................................................75 4.6.13 Curing Concrete.................................................................................................................75 4.6.14 Precast Concrete ...............................................................................................................76 4.6.14.2 Precast Prestressed Reinforced Concrete Piles.................................................................77


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4.8 Formwork .............................................................................................................................81 4.8.1 General Requirements .........................................................................................................81 4.8.2 Removal of Formwork ..........................................................................................................82 4.8.3 Surface Finishes ..................................................................................................................82 4.8.3.1 Ordinary Finish.................................................................................................................82 4.8.3.2 Smooth Finish..................................................................................................................83 4.8.3.4 Broomed Finish................................................................................................................83 4.8.3.4 Floor Finish......................................................................................................................83 4.9 Joints....................................................................................................................................83 4.9.1 Polythene Sheeting..............................................................................................................83 4.9.2 Construction Joints ..............................................................................................................83 4.9.3 Movement Joints..................................................................................................................84 4.9.3.1

Movement Joint Filler........................................................................................................84

4.9.3.2 Joint Sealer......................................................................................................................84 4.9.3.3 Waterstops ......................................................................................................................84 4.9.3.4 Dowel Bars ......................................................................................................................85 4.10 Repair of Concrete..............................................................................................................85 4.11 Testing of Concrete Water Retaining Structures.................................................................85 4.12 Tolerances ..........................................................................................................................86 4.13 Repair of Existing Concrete ................................................................................................86 4.13.1 Dewatering and Cleaning ...................................................................................................86 4.13.2 Identification of Repairs ......................................................................................................86 4.13.3 Materials ...........................................................................................................................86 4.13.4 Types of Defects ................................................................................................................87 4.13.4.1 Repair of Cracks 1 up to 3mm wide ..................................................................................87 4.13.4.2 Repair of Leaking Cracks 1 up to 3 mm wide.....................................................................87 4.13.4.3 Repair of Cracks 3 up to 20mm wide ................................................................................88


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4.14.4 Samples and Test Certificates.............................................................................................90 4.14.5 Working Drawings and Method Statement ...........................................................................91 4.14.6 Fabrication ........................................................................................................................91 4.14.6.1 Welding ..........................................................................................................................91 4.14.6.2 Bending..........................................................................................................................91 4.14.6.3 Cutting............................................................................................................................91 4.14.6.4 Holing.............................................................................................................................91 4.14.6.5 Bolting............................................................................................................................92 4.14.6.6 Marking of Parts ..............................................................................................................92 4.14.7 Works Erection ..................................................................................................................92 4.14.8 Site Erection ......................................................................................................................92 4.15 Water Storage Tanks ..........................................................................................................93 4.15.1

General .............................................................................................................................93

4.15.2 Steel Water Storage Tanks .................................................................................................93 4.15.2.1 General ..........................................................................................................................93 4.15.2.2 Supervision of Erection of Steel Tanks ..............................................................................93 4.15.2.3 Design of Supporting Tower for Steel Water Reservoirs .....................................................93 4.15.3 Glass Reinforced Plastic Water Storage Tanks ....................................................................94 4.15.3.1 General ..........................................................................................................................94 4.15.3.2 Supervision of Erection of GRP Tanks ..............................................................................94 4.15.3.3 Design of Supporting Tower for GRP Water Storage Tanks................................................94 4.15.4 Reinforced Concrete Tanks ................................................................................................94 4.15.5 Disinfection of Tanks ..........................................................................................................95 4.16 Protection and Painting of Metal.........................................................................................95 4.16.1 Painting.............................................................................................................................95 4.16.2 Galvanising .......................................................................................................................96 4.17 Roads and Pavements ........................................................................................................96


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4.17.8 Asphaltic Surface Treatment.............................................................................................100 4.17.9 Bituminous Prime Coat.....................................................................................................103 4.17.10 Bituminous Tack Coat ....................................................................................................104 4.17.11 Asphaltic Concrete .........................................................................................................104 4.17.12 Concrete Kerbs..............................................................................................................106 4.17.13 Reflectorised Paint for Road Markings .............................................................................106 4.18 Sidewalks and Other Paved Areas....................................................................................107 4.18.1 Reinforced Concrete Sidewalk ..........................................................................................107 4.18.2 Stone Surfaced Tile Sidewalk ...........................................................................................107 4.18.3 Paving Block Sidewalk .....................................................................................................107 4.18.4 Concrete Tile Pavement ...................................................................................................107 4.18.5 Hot-Asphaltic Sidewalk.....................................................................................................107 4.18.6

Limit of Construction and Allowable Tolerances..................................................................108

4.18.7 Other Requirements.........................................................................................................108 4.19 Fencing and Walls ............................................................................................................108 4.19.1 Fences and Gates............................................................................................................108 4.19.2 Existing Boundary Walls and Fences.................................................................................108

PARAGRAPH 5 - BUILDING WORKS ....................................................................................................109 5.1 Materials.............................................................................................................................109 5.1.1 Precast Concrete Blocks ....................................................................................................109 5.1.2 Mortar ...............................................................................................................................109 5.1.3 Damp-proof Courses in Walls .............................................................................................109 5.1.4 Timber ..............................................................................................................................109 5.1.5 Chipboard and Plywood .....................................................................................................110 5.1.6 Nails and Screws ...............................................................................................................110 5.1.7 Timber Glue ......................................................................................................................110


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5.1.15 Aluminium Sheet Roofing .................................................................................................111 5.1.16 Asbestos Cement Sheet Roofing.......................................................................................111 5.1.17 Metal Roof and Wall Sheeting...........................................................................................111 5.1.18 Clear Sheet Glass............................................................................................................112 5.1.19 Fixed Metal Louvres .........................................................................................................112 5.1.20 Sandtex Textured Finish...................................................................................................112 5.1.21 Insulation Board...............................................................................................................112 5.1.22 Precast Terrazzo Tiles......................................................................................................112 5.1.23 Ceramic Tiles ..................................................................................................................112 5.1.24 Plastic Pipes for Hot and Cold Water Services ...................................................................112 5.1.25 Stop Valves .....................................................................................................................112 5.1.26 Draw-off Taps ..................................................................................................................112 5.1.27 Water Storage Tanks .......................................................................................................113 5.1.28 Soil, Waste and Vent Pipes...............................................................................................113 5.1.29 Sanitary Appliances .........................................................................................................113 5.1.30 PVC Tiling and Skirting.....................................................................................................113 5.2 Blockwork Walls.................................................................................................................113 5.2.1 Storage of Materials ...........................................................................................................113 5.2.2 Mortar Mixing.....................................................................................................................114 5.2.3 Blockwork .........................................................................................................................114 5.2.4 Protection and Curing.........................................................................................................114 5.2.5 Non Load-bearing Walls .....................................................................................................114 5.2.6 Ties to Concrete Structures ................................................................................................114 5.2.7 Movement Joints................................................................................................................114 5.3 Carpentry and Joinery ........................................................................................................115 5.3.1 General .............................................................................................................................115 5.3.2 Timber Preservation...........................................................................................................115


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5.4.2 Fixed Windows ..................................................................................................................116 5.4.3 Glazing .............................................................................................................................116 5.4.4 Fixing of Doors and Windows .............................................................................................116 5.4.5 Ironmongery ......................................................................................................................117 5.4.6 Lamination ........................................................................................................................117 5.5 Roofing and Wall Cladding .................................................................................................117 5.5.1 Metal Roof and Wall Sheeting.............................................................................................117 5.5.2 Asbestos Roof Sheeting .....................................................................................................118 5.5.3 Bituminous Roofing of Slabs ...............................................................................................118 5.5.4 Aluminium Sheet Roofing ...................................................................................................119 5.6 Plumbing Installations ........................................................................................................119 5.6.1 General .............................................................................................................................119 5.6.2 Coupling Unions ................................................................................................................119 5.6.3 Valves...............................................................................................................................119 5.6.4 Overflow Pipes ..................................................................................................................119 5.6.5 Soil, Waste and Vent Pipes ................................................................................................120 5.6.6 Sanitary Appliances ...........................................................................................................120 5.6.7 Pipework and Fittings .........................................................................................................120 5.6.8 Rainwater Pipes and Gutters ..............................................................................................121 5.6.9 Testing of Waste and Soil Pipes..........................................................................................121 5.6.10 Testing of Water Supply Pipes ..........................................................................................122 5.7 Rendering and Other Finishes ............................................................................................122 5.7.1 Plastering and Rendering ...................................................................................................122 5.7.2 Granolithic Floor Screed.....................................................................................................123 5.7.3 In-situ Terrazzo Paving and Skirtings ..................................................................................123 5.7.4 Glazed Ceramic Wall Tiles .................................................................................................123 5.7.5 Ceramic Floor and Skirting Tiles .........................................................................................123


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5.8.5 Painting Workmanship and Conditions ................................................................................125 5.8.6 Protection and Painting of Softwood ....................................................................................126 5.8.7 Protection of Hardwood ......................................................................................................126 5.8.8 Protection of Wood in Water ...............................................................................................126 5.8.9 Protection and Painting of Concrete, Plasters and Blockwork................................................126 5.8.10 Colours ...........................................................................................................................126 5.8.11 Rehabilitation of Existing Painting......................................................................................127 5.8.12 Summary of Coating Systems...........................................................................................127


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GENERAL TECHNICAL SPECIFICATIONSGENERAL TECHNICAL SPECIFICATIONS

PARAGRAPH 1 - GENERAL

1.1 Definitions

In this Specification (as hereinafter defined) the following words and expressions shall have themeanings hereby assigned to them:

- "Specification" means both General Specification and Particular Specification.

- "General Specification" means this specification specifying description, requirements for

materials and the construction method, and other requirements which are not shown onthe drawings. The General Specification covers all classes of workmanship, materialsand equipment commonly involved in construction. Hence, the General Specification mayspecify works that are not applicable to this particular contract. The General Specificationshall be used in conjunction with the drawings and the Particular Specification.

- "Particular Specification" means the specification which the Engineer has specificallyspecified for any particular work and any revisions thereof which have been approved bythe Engineer. It shall include additional specifications prepared before or during the

construction for the modification or addition for any specific parts of the Works.

- "Provided" and its derivatives means the complete design, manufacture, delivery,installation, testing and commissioning of the works, inclusive of such ancillary servicesas inspection and witnessed testing at the places of manufacture, workshop and sitepainting, handling on site, site trials and of all such other services as are noted in theSpecification or reasonably necessary for the safe, reliable and efficient completion of theContract.

- "Earth excavation" is defined as excavation of any naturally occurring or man made orplaced material that can be removed manually or by mechanical shovel, bulldozer orripper.

- "Rock excavation" is defined as excavation of any naturally occurring or man made orplaced material that cannot be removed by other means than by systematic blasting or bybarring or by wedging or by the use of pneumatic tools or impact breakers.

- "Topsoil" is defined as any layer of soil adjacent to the existing surface which contains oris discoloured by roots or other organic matter which in the opinion of the Engineer willadversely affect part of the Works superimposed thereupon.

1.2 Sequence of Documents


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1.3 Abbreviations

In this Specification the following abbreviations have the meanings hereby assigned to them:

1.3.1 Dimensions and Units

'mm' means millimetre'cm' means centimetre'm' means metre'km' means kilometre'mm' means square millimetre'cm' means square centimetre

'cm' means cubic centimetre'm' means square metre'ha' means hectare or 10,000 square metres'l' means litre'cc' means cubic centimetre'm' means cubic metre'g' means gram'mg' means milligram'kg' means kilogram

'tonne' means 1,000 kilograms'N' means Newton'kN' means kilo Newton'kcal' means kilocalorie'h' means hour'l/s' means litre per second'm/s' means cubic metre per second'kg/cm' means kilogram per square centimetre

'kg/m' means kilogram per cubic metre'C ' means degrees Celsius'%' means per cent'' means per thousand.

1.3.2 Standards and Organisations

BIS means Bureau of Indian StandardsBS means British Standards

ASTM means American Standard for Testing MaterialsAASHTO means American Association of State Highway and Transportation OfficialsACI means American Concrete InstituteANSI means American National Standard InstituteISO means International Standard OrganisationIEC means International Electro-technical CommissionNEN means Dutch National Standards


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FLGD means FlangedGALV means GalvanizedISS means Inside Screw and Steam Type

LJ means Lap JointNPSH means Net Positive Suction HeadOS&Y means Outside screw and Yoke typePE means Plain Endrpm means Revolutions per minuteRF means Raised FaceRJ means Ring JointSCRD means ScrewedSMLS means Seamless

SCH means ScheduleSW means Socket WeldSO means Slip OnWN means Welding NeckST means Stellite facedTFS means Taylor Force StandardUB means Union BonnetLB means Long BonnetPSB means Pressure Seal Bonnet

1.3.4 Electrical Abbreviations

L1 means red phaseL2 means yellow phaseL3 means blue phaseN means neutralac means alternating currentdc means direct currentA means ampmA means milliampV means voltkW means kilowattkWH means kilowatt hourkVAr means kilovarkVA means kilovolt ampMVA means megavolt amp

Hz means hertz (cycles per second)SP means single poleSPN means single pole and neutralDP means double poleTP means triple poleTPN means triple pole and neutralSPSwN means single pole and switched neutral


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such public and private lands as is in the opinion of the Engineer necessary or practicable for theconstruction of the Works. The Contractor shall not use the Site for any purpose not required by theContract.

1.4.2 Condition of Site

Prior to carrying out any work the Contractor shall inspect the Site, in conjunction with the Engineer orhis Representative to establish its general condition which shall be agreed and recorded in writing,and where, in the opinion of the Engineer or his Representative it is deemed necessary, by means ofphotography or video recording.

These locations include: - Contractor's site offices

- Workshop areas- Routing of construction roads

Details recorded shall include the location of all boundary and survey beacons the conditions ofbuildings, surfaces, terracing (if any), ditches, watercourses, roads, tracks, fences, and otherinformation relating to the Site and elsewhere which may be affected by the Contractor's operations.

1.4.3 Access to Site

Prior to the commencement of any part of the Works, the Contractor shall make temporary accesstracks including all necessary temporary diversions and bridge works to the part of the Siteconcerned, all to the approval of the Engineer.

The Contractor shall maintain such access tracks in a condition suitable for the safe and easypassage of plant and vehicles until they are no longer required for the purpose of the Contract.

The Contractor shall make a record to be agreed by the Engineer of the conditions of the surfaces ofany private lands or of any public cultivated or maintained lands over which access to the Site liesbefore use for access and he shall keep such surfaces in a reasonable state of cleanliness and repairduring the execution of the Works. On the termination of the Contractor's use of such access he shallrestore the surfaces to a condition at least equal to that obtaining before his entry on them.

For the purpose of this Contract all road tracks, "rights of way", side walks and the like, which are notpart of the permanent Works, but are required by the Contractor or the Engineer on or near the Sitedirectly or indirectly in connection with the Works under the Contract, will be called ConstructionRoads. These roads will be regarded as Temporary Works.

The Contractor shall construct all Construction Roads, which shall be of such a standard that they canbe normally and safely used in all weather conditions.

The Contractor is not entitled to any reimbursement for the use of the Construction Roads by othersthan the Employer, personnel and agents of the Engineer and the Contractor, provided that they use itwith the approval of the Engineer and directly or indirectly in connection with the Works under the


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The Contractor shall clear also the areas of all borrow areas and other sources of materials, and thesites of all Temporary Works, offices, stores, workshops, camps, mess huts and otheraccommodation and shall dispose of all debris in an approved manner. The limits of the areas to be

cleared shall be as indicated on the Drawings or as shall be defined by the Engineer.

The Contractor shall at all times and in all respects take the necessary actions to protect theenvironment in and around the Site by adhering to the measures detailed in his EnvironmentalManagement Plan. The Contractor shall do his utmost to spare trees, vegetation, flora and the like. Ifthe Engineer's Representative requires that individual trees, shrubs and hedges are to be preservedthe Contractor shall do so and shall take all necessary precautions to prevent their damage.

Upon completion of all work to be performed by the Contractor on any part of the Site otherwise than

in connection with the care and maintenance of the Works, the Contractor shall clear the said part ofthe Site as specified in relevant Clauses of the Conditions of Contract.

1.4.5 Prevention of Surface Erosion

The Contractor shall take particular care at all times to prevent surface erosion on the Site andelsewhere on land which may be affected by his operations and the Engineer may impose suchreasonable limitations and restrictions upon the method of clearance and upon the timing and seasonof the year when clearance is carried out as the circumstances seem to him to warrant.

1.4.6 Care of Water

The Contractor shall take care of water, whatsoever the source or cause may be in adequate mannerto ensure that the Works specified are executed in a satisfactory dry and safe manner to the approvalof the Engineer.

Unless stated and specified elsewhere all measures dealing with care of water shall be considered asbeing Temporary Works. No claim by the Contractor for the costs of care of water will be accepted bythe Engineer. After having served their purposes, the Temporary Works and plant shall be removed tothe satisfaction of the Engineer.

1.4.7 Unauthorized Persons

No unauthorized persons shall be allowed on the Site. The Contractor shall instruct all such personsto keep out and shall take steps to prevent trespassing in accordance with the General Conditions ofContract.

1.4.8 Advertising

The Contractor shall not erect advertisements in any form within the Site or in adjoining groundwithout the approval of the Engineer.


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number and the proposed location of the various types of buildings, yards and other site facilitieswhich he will provide under the provisions of this clause.

As soon as practicable but in any case not later than four (4) weeks after receipt by the Contractor ofthe letter of acceptance, the Contractor shall submit detailed drawings, specifications and all details ofthe location, the lay-out and the construction of buildings, roads, services, equipment, fittings, fur-nishings and everything to be provided, installed and constructed under the provisions of this clausefor the approval of the competent authorities and of the Engineer (which approval shall not beunreasonably withheld) before materials are ordered or the works are put in hand.

The Contractor shall be responsible for maintaining the facilities in good order and shall promptlyimplement repairs and improvements, if so requested by the Engineer. He shall keep the site free

from all waste, garbage, stagnant water and the like.

1.5.2 Accommodation for the Contractor

The Contractor shall provide, erect, construct and equip all offices, workshops, stores, sheds, loadingand unloading facilities complete with all machines and equipment and all services, access roads andthe like, required by him or his principals, employees or agents directly or indirectly for theconstruction or maintenance of the works.

At the end of the contract period, the Contractor shall entirely remove from the site all accommodationand facilities, complete with all machines and equipment.

1.5.3 Offices for the Engineer's and Employer's Representatives

The Contractor shall equip for the duration of the Contract and for three months after being grantedthe Certificate of Completion, for the sole use of the Engineer and the Employer and their principals,employees and agents the office space as described in the Particular Specifications.

Unless agreed otherwise with the Engineer, at the end of the Contract period the Contractor shallcompletely remove the offices and all other equipment furnished by the Contractor under this Clause.

1.5.4 Site Laboratory

The Contractor shall provide, erect, staff and maintain a site laboratory with testing equipmentthroughout the Contract period, at a location approved by the Engineer and as described in theParticular Specifications.

At the end of the Contract period the Contractor shall entirely remove the laboratory from the site. Alllaboratory equipment as specified in the Particular Specifications shall be handed over to theEmployer in good order, fair wear and tear excepted.

1.5.5 Power, Water, Sewerage, Drainage, Sanitary Provisions


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1.5.6 Telecommunications

The Contractor shall arrange for, provide, install construct and maintain adequate and sufficient

means of telecommunication for the use of the principals, personnel and agents of the Employer,Engineer and Contractor on or near the Site.

The detailed requirements for the equipment under this Clause for the Engineer's office are specifiedin the Particular Specifications

The Engineer shall be allowed free use of the Contractor's Communication facilities.

1.5.7 First Aid Arrangements

The Contractor shall provide and maintain at his own expense on the Site, adequate and easilyaccessible first-aid facilities for treatment in case of accidents during the execution of the Works underthe Contract and such outfits as may be required in any relevant laws, bye-laws, ordinances andregulations for the time being in force. The places where these items are kept shall be prominentlymarked.

A sufficient number of the Contractor's employees shall be fully qualified in first aid, so that such aqualified person is immediately available in case of accident at any time and at any place and the

persons so designated shall be made known to all employees by the posting of their name anddesignated in a prominent position on the Site.

Any order from the Engineer as to extension of or alternation to such first aid facilities or services shallbe promptly carried out.

1.6 Programme of Works and Methods of Construction

Further to the Conditions of Contract, the programme of Works shall include but not be limited to thefollowing items:

- Proposed dates for starting and completing the construction of the various parts andstages of the Works.

- Proposed dates for procuring materials, mobilization of the main plant required tocomplete the Works.

- Proposed hours of Site works for Contractor's personnel.

- Proposed system of Contractor's access and work roads and Site plan.

The Contractor shall submit every four weeks six (6) copies of a detailed planning for the next periodof 4 weeks describing the Work he intends to perform in that period. This planning must include theimplementation of all the agreements made with the authorities which are involved and responsible fortraffic, transport and existing services like water supply, power, telephone, fire fighting, drainage andsuch like


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Contractor to additional payments.

For any operations that may result in a safety hazard (eg deep excavation, pile driving, concrete

casting of foundation etc.), the Contractor shall submit in writing the method statements for suchoperations for approval by the Engineer not less than 30 days prior to the planned commencement ofsuch work.

1.7 Environmental Management Plan

A detailed Environmental Management plan (EMP) shall be prepared by the Contractor and submittedto the Engineer for approval within 8 weeks of the receipt by the Contractor of the notification to

commence the Works issued by the Engineer.

The EMP shall include measures to be taken by the Contractor to mitigate and/or protect theenvironment against all impacts resulting from the execution of the Contract Works. The EMP shallreflect the standards for environmental protection specified by the State Environmental ProtectionAgency (SEPA) or equivalent.

As the EMP is a management tool for the Contractor's use, it shall present in detail how thesemeasures should be operated, the resources required and the schedule of implementation. The plan

should contain separate sections dealing with individual environmental aspects.

The general format of the EMP shall be:1. Objective2. Work Plan3. Implementation Schedule4. Man-power Requirements5. Monitoring Procedures

The Contractor shall implement the EMP measures at the commencement of the permanent worksactivities. The costs of preparing, implementing and monitoring the EMP shall be deemed to beincluded in the Contractor's Bid Price.

1.8 Notice of Operations

Further to the General Conditions of Contract, the Contractor shall not carry out any important

operation without the consent in writing of the Engineer. The Contractor shall give full and completenotice in writing to the Engineer sufficiently in advance of the time of the operation, but not less than48 hours, so as to enable the Engineer to make such arrangements as he may deem necessary forinspection.

1 9 Working Hours


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is given in the Particular Specification.

Benchmarks and reference points will be provided by the Engineer on or near the Site in a sufficientnumber to enable in the opinion of the Engineer the setting out of the Works by the Contractor. TheContractor shall check the position and levels of the benchmarks and the coordinates of the referencepoints, and then shall be fully responsible for maintaining the same intact and accurate. Where it isnecessary to move a benchmark or reference point because of the Works, the Contractor shall re-place the benchmark or reference point to the approval of the Engineer.

The Contractor shall preserve all benchmarks and reference points and shall keep full written recordsof all amendments, corrections, and replacements of benchmarks and reference points available forinspection by the Engineer. The Contractor shall keep up to date a plan showing the position and

elevations of all main benchmarks and coordinates of all main reference points and shall furnish to theEngineer, three copies of such plan and each amendment thereof.

1.11 Setting Out

In amplification to the General Conditions, the Contractor shall submit to the Engineer, both thegeneral and detailed methods of complete setting out of the alignments of the various structures, etc.and the calculations for curvatures and the various setting out dimensions thereby obtained from the

position of the Works. At all times the Contractor shall give the Engineer notice sufficiently in advancebut not less than 24 hours of his intention to set out.

The method of surveying shall be to the approval of the Engineer. Field books and tabulated datashall be well maintained and made available for inspection and checking by the Engineer upon re-quest.

1.12 Joint Measurement of Works

In the event of the Contractor having to execute any work or provide any material with regard to whichhe intends to claim extras, or where works are to be covered up, he shall make arrangements to takemeasurements of the said works or material and shall inform the Engineer accordingly, giving aminimum of 48 hours notice. The Engineer will then join the Contractor for a joint survey. If thesemeasurements are not taken jointly and recorded before the work will be executed, the Contractor'smeasurement will not be recognized by the Engineer.

The fact that such joint measurements have been made will in no way bind the Engineer to recognisethe claim. The Engineer shall at all times have access to the Contractor's diary and may daily checkthe progress of relevant works, but this shall in no way bind the Engineer to accept the claim nor thevalue of the work other than by joint measurement.

1 13 Documentation to be Provided


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- Monthly progress reports of work in hand under the Contract, at manufacturer's worksand elsewhere. The reports shall be in an agreed format, shall be issued before the 14thof each month and shall give full details of progress with the Contract during thepreceding month, including production status of drawings, manufacture, orders, stocks ofmaterials, shipping, delivery, erection, testing and commissioning.

- Progress schedules, to the Engineer's requirements, indicating the planned dates ofcommencement and completion of installation for each portion of the works. Theseschedules, submitted at the Engineer's request, shall be furnished at agreed timeintervals, such intervals to be not less than 14 days.

1.14 Returns of Labour and Plant

The Contractor shall supply to the Engineer proper records at such time, intervals and in a form as theEngineer may direct, of every employee engaged on the Contract, specifying the number employed inthe various classes of work and wages paid. The Contractor shall also from time to time, as requiredby the Engineer supply any other details of labour employed on the Works.

The Contractor shall supply to the Engineer a monthly return showing full particulars on a form to be

approved by him, of all items of plant including location and state of each and the sections of theWorks on which they are employed. Plant return sheets, shall inter alia give information concerningproduction, idle time and shall specify causes of idle time. The Contractor shall also keep full recordsof all materials and other things brought on Site for carrying out the Works.

The Contractor shall not destroy any of his records, time sheets, vouchers and the like on labour,Constructional Plant, materials and things before the end of the Contract and such records shall beavailable at any time for inspection by the Engineer and or by a competent Authority for compliancewith the requirements of the Contract and of the local laws and regulations and in order to enableinvestigation by the Engineer of any claim by the Contractor.

1.15 Works Diary

The Engineer will keep a diary on the Site in which all his remarks, instructions, decisions and theessential details of the Works shall be recorded. The Contractor shall assist in keeping the diary bysupplying daily any information on the Works requested by the Engineer.

If required by the Engineer, the Contractor shall read the diary within two days of each daily entrybeing made and shall sign each entry as having been read by him. The Engineer shall also sign thediary and hand a copy of the signed diary to the Contractor.

If the Contractor does not agree with the diary written by the Engineer in either accuracy orcompleteness he shall record his remarks in the space provided therein before signing the diary as


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All dimensions in drawings, calculations and information furnished in connection with the Contractshall be expressed in metric SI units.

All drawings shall be sized to designations A1, A2, A3, and A4. Sizes AO and above shall not beused. Each drawing shall carry the project title, the name of the Engineer, the Contractor and theEmployer together with the drawing title and number and other relevant data, in the lower right-handcorner.

The Contractor shall submit his drawings and documents to the Engineer for review or approval atleast thirty (30) days prior to the execution of the work concerned with the said drawings anddocuments. Manufacturing drawings for items to be fabricated outside the country shall be submitted

within one hundred twenty (120) days from the date of issue of the Notice to Proceed.

The procedure for the submission, review and/or approval of drawings and documents shall beunderstood to be as follows; provided that the Engineer shall reserve the right to make any changesto such procedure during the course of the works when the Engineer deems necessary. When theContractor is ready to have the Engineer review and/or approve certain drawings and documents, heshall submit three (3) copies of clearly, readable copies of the drawings and documents. Within thirty(30) days after receiving copies of the drawings and documents from the Contractor, the Engineer willreturn one copy marked with one of the following classifications, depending upon whether the

drawings and documents are to be "approved" or "reviewed":

Classifications of Drawings and documents for Review/Approval:

1 "APPROVED"2 "APPROVED EXCEPT AS NOTED-RE-SUBMITTAL NOT REQUIRED"3 "RESUBMIT AFTER CORRECTION"4 "NOT APPROVED"

Upon receipt of drawings and documents which have been marked as shown in 1 or 2 above, theContractor may proceed with the work covered by such drawings and documents, making correctionsif indicated there upon by the Engineer. Copies of all approved drawings shall be maintained at theContractor's site office.

When returned drawings and documents have been marked as shown in 3 above, the Contractorshall make necessary corrections and/or revisions to the drawings and documents in a timely mannerand shall resubmit three (3) copies of revised drawings and documents to the Engineer.

Any work done prior to the Engineer's approval of drawings and/or documents shall be at theContractor's risk.

The Engineer's approval of the Working Drawings, Contract Records etc., shall not relieve theContractor of the obligation to meet the terms of the Specification and any of the plant which upondelivery to site is found to be incorrect or unsatisfactory or which fails to perform its duty satisfactorily


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The As-Built Drawings for the pipe networks shall be on a scale of:

1:10,000 for overall layout and key plan of drawings.

1:2,500 for overall layout of new primary and secondary mains

1:1,000 for new pipe installation with house connections and existing system 1:2,500 H,1:250 V for longitudinal sections

1:500 for house connections

1:50 for valve chamber details and details of connections to the existing pipeline system.

or any other appropriate scale as per Engineers request.

As Built Drawings shall be drawn in compliance with the DJBs standard including symbols, lines etc.

The As-Built Drawings shall state official names, if any, of each street and shall reflect on the as-builtprofiles the actual classification of soils. The Contractor shall also mark on the As-Built Drawings thelocation of all services found during the course of excavation and pipelaying works. Details ofconnections to the existing lines shall be shown clearly on the drawings.

1.17 Photographs

The Contractor shall supply, each month, negatives and four copies of progress photographs, suitably

inscribed, of a size not less than 250 mm by 200 mm of such portions of the Works, in progress andcompleted, as may be directed by the Engineer. The negatives and prints shall not be retouched.The negatives of the photographs shall be the property of the Employer and no prints from thesenegatives may be supplied to any person or persons without the authority of the Employer or theEngineer. The Contractor shall also provide photograph albums and mounts for mountingphotographs.

1.18 Contractor's Responsibility for Design

Subject to the requirements of this Specification the Contractor shall be responsible for the generaland detailed design of the complete equipment to be provided and for the dimensions andarrangements of the various parts. The Contractor shall be responsible for checking the dimensionsand installation conditions of the existing facilities and for the design of any modifications required.

The design, construction and finish of the complete equipment supplied under this Contract shall beaccording to first class engineering practice and each item of equipment shall be in every way suitablefor continuous operation over the full range of duties. The plant shall be as simple and maintenancefree as possible.

1.19 Temporary Works

The Contractor shall design at his own expense all Temporary Works he may require for the


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1.20 Approval of Contractor's Proposals

The Contractor shall supply to the Engineer 4 copies of the following documentation, giving details ofhis proposals for approval, within 4 weeks of the Contract Start Date.

- Design and working drawings and data including calculation and erection information.- All technical specifications of all plant and equipment proposed for the works.- Details of dead and live loads imposed by each item of plant on its foundations.

1.21 Contractor's Staff

The Contractor and any Sub-Contractor engaged upon the execution of the Works shall be deemedto employ, or to procure the employment of, staff skilled and experienced in works of a similar natureto the works and jointly and severally they shall be responsible for the provision of safe, reliable andefficient plant such as will ensure its precise and safe operation under all conditions, and shall provideall plant and services reasonably necessary for the complete setting to work and performance of theworks whether or not specifically mentioned in the Specification, Bill of Quantities or indicated in theDrawings.

1.22 Assistance to the Engineer

1.22.1 General

The Contractor shall render such assistance with facilities, labour, constructional plant and materialsas at any time may be required by the Engineer's representative directly or indirectly in connectionwith the works.

The costs of such assistance shall be borne by the Contractor if such assistance is intended for or

provided for or specified in the contract; if any assistance is required by the Engineer's representativewhich is not so intended and not provided for and not specified, then the cost of such assistance shallbe borne by the Employer.

The assistance to the Engineer's representative includes, but not by way of limitation, the items in thefollowing sub-clauses.

1.22.2 Labour

The Contractor shall provide the following personnel to be solely and permanently in attendance uponthe Engineer and his principals, employees and agents:

- 4 competent men to act as messenger, chainman, sample collector, office assistant forcleaning and waste disposal etc. and the like;watchmen for laboratory and office for both day and night

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equipment as specified in the Particular Specification or, as required by the Engineer in connectionwith the Contract.

1.22.5 Transport

The Contractor shall make available at the Commencement of the Works, maintain, repair, and keepin sound, safe running condition vehicles for the sole use of the Employer and Engineer, as specifiedin the Particular Specification.

The vehicles shall be complete with spare parts, tools and the like. The Contractor shall provide allnecessary materials including fuel and lubrication. The vehicles shall be driven by skilled and licenseddrivers employed by the Contractor.

The Contractor shall keep the vehicles insured during the Contract Period under a fullycomprehensive motor insurance policy issued by a reputable insurance company. Both the policy andthe insurer will be subject to the approval of both the Employer and the Engineer.

The vehicles shall be kept permanently at the disposal of the Employer and the Engineer, theirprincipals, employees and agents. During periods of maintenance or repair the Contractor shall makeequivalent replacement vehicles available.

Upon completion or termination of the Contract the vehicles will remain the property of the Employer.

1.23 Care of Public Utility Services

For the purpose of these Specifications public utility services (hereinafter referred to as "publicutilities") mean:

1 Water lines complete (incl. water meter boxes, valve boxes, fire hydrants etc.).

2 Wire lines complete (telephone wires, poles etc.).3 Power lines, both high tension and low tension, complete (masts etc.).4 Cable ways.5 Street Lighting.6 Traffic Signals.7 Sewer lines complete (incl. manholes, overflows, siphons etc.).8 Drains, watercourse crossings.9 Fibre optic lines.

10 All other (associated) utility appurtenances and things within the limits of the proposedconstruction works.

It shall be the Contractor's own liability and full responsibility to locate all existing utilities completewithin the limits of the proposed construction work, and well in advance before starting any relevantconstruction works. No claims from the Contractor arising from incomplete information will beconsidered by the Employer The Contractor shall accept full responsibility and shall allow in his

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shall be responsible for the safe keeping and protection of any controllers, cables or other equipmentconnected with traffic light installations within the Site.

At points where the Contractor's operations are adjacent to properties of railway, telegraph, telephoneand power authorities, or are adjacent to other property, damage to which might result in considerableexpense, loss or inconvenience, work shall not be commenced until all arrangements necessary forthe protection thereof have been made.

The Contractor shall co-operate with the owners or the authorities of any underground or overheadutility lines in their removal and rearrangement operations in order that these operations may progressin a reasonable manner, and that duplication of rearrangement work may be reduced to a minimum,and that services rendered by those parties will not be unnecessarily interrupted.

In the event of interruption to water or utility services as a result of accidental breakage, or as a resultof being exposed or unsupported, the Contractor shall promptly notify the proper authority or owners.He shall co-operate with the said authority in the restoration of service as promptly as possible. In nocase shall interruption to water service be allowed to exist outside of working hours. Fire hydrantsshall be kept accessible to the Fire Department at all times, and no materials shall be kept or stockpiled within 5 meters of any fire hydrant.

It shall be the duty of the Contractor to notify all utility companies, or authorities or other parties

affected, and to endeavour to have all necessary adjustments of the public utility fixtures, pipelines,and other appurtenances within or adjacent to the limits of construction, made as soon as practicable.

Adjustment in time for completion, because of delays suffered by the Contractor may be determinedin accordance with the provisions of the Conditions of Contract.

The location and extent of the subsurface structures and surfaces cannot with any definite assurancebe predicted. The Contractor shall excavate and backfill sufficient exploratory trenches ahead of theWorks to the satisfaction of the Engineer for the purpose of locating underground structures and utility

services affecting the Works. The Contractor shall excavate by hand around existing structures andutility services in the subsurface.

The Contractor shall subsequently survey these underground structures and utility services and shallplot the records in plan and section on detail drawings. The detail drawings shall be issued withinreasonable time to the Employer for his approval to allow the Employer to use the detail drawings asan aid to check and/or relocate the position of the Permanent Works involved and to issue withinreasonable time to all circumstances the relevant construction drawings. No delays will be taken into

account by reason of failure or inability of the Contractor to issue the detail drawings in due time.Exploratory trenches, where required shall be backfilled immediately after their purpose has beenaccomplished and the Contractor shall maintain the surface in a satisfactory condition

1.24 Testing and Inspection

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modified before implementation of that portion of the plan. Final copies of the approved plan shall beavailable for the testing, inspections or commissioning.

The Contractor shall carry out during manufacture all tests specified in the relevant Standardsamplified as may be called for in the Specification and Bill of Quantities, and shall forward to theEngineer in triplicate duly certified copies of the test results and certification that the equipment andmaterials comply with the relevant Standards.

Unless otherwise specified hereafter, the Contractor shall give not less than fourteen clear daysnotice in writing for the time, date and place of all impending tests so that the Engineer, or hisrepresentative may be present to witness such tests. The Contractor shall furnish test certificates intriplicate for all tests whether witnessed or not.

As and when the Engineer is satisfied that any plant is in accordance with the Specification and haspassed the prescribed workshop tests, he will notify the Contractor in writing to that effect.

If after inspection or tests the Engineer decides that the plant concerned or any part thereof isdefective or is not in accordance with the Contract, he may reject it by giving to the Contractor, withina reasonable time, notice in writing of his decision and the grounds upon which it is based.

1.25 Tests on Completion

When the plant is completely erected on Site and ready for service, the Works shall be tested andcommissioned under the Contractor's supervision and subjected to the prescribed Tests onCompletion in the presence of the Engineer and of the Employer's staff to demonstrate that it is ableto perform its specified duties satisfactorily under the approved system of operation and control andthat the whole conforms with the Specification.

Prior to the commencement of any site testing the Contractor shall submit to the Engineer for

approval schedules detailing the tests to be carried out in satisfaction of the Tests on Completion. Onsatisfactory completion of the tests on Completion the Contractor shall provide copies of thecompleted schedules for record purposes.

Except where otherwise specified, each item of plant shall be subjected to a continuous twelve hourtrial under normal working conditions, at varying heads, quantities, loads and speeds whereapplicable to establish correct and reliable functioning of the plant. The performance of each item ofplant at its guarantee point shall be determined using pressure gauges, flow meters and electricalgauges. Electrical plant shall be tested in accordance with the Institution of Electrical Engineer'sRegulations, for earth continuity, polarity and insulation resistance, and the Contractor shall supply theEngineer with three copies of the schedule of test results. The installation will not be accepted untilsuch tests have been approved.

Power consumption, discharge and suction and delivery pressures shall be measured whereapplicable

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The Contractor shall instruct the Employer's operating staff and shall stand by the plant on acontinuous basis whilst the trials are in progress. Should the plant breakdown during the trials, theContractor will be given the opportunity to repair it and the trials shall start again. The take over dateshall be agreed as the date upon which the successful trials started and the Engineer shall issue aCertificate of Completion so dated, when the Record Drawings have been approved and submitted.

1.26 Record Drawings

Concurrent with the progress of work on Site the Contractor shall prepare all necessary drawings anddiagrams of the "as