Chapter ii 2 technical requirements(specification) for metro

Contract Package HPLML/CP-02
Elevated Section - Stations
Chapter II-2
Technical Requirements
HANOI PILOT LIGHT METRO LINE
Section Nhon - Hanoi Railway
Station

Hanoi Pilot Light Metro Line
Section Nhon-Hanoi Railway Station
Part II - Chapter II-2
Technical requirements
Confidential TRS Version “5”
TABLE OF CONTENT
GENERAL TECHNICAL REQUIREMENTS
ARCHITECTURAL WORKS
DIVISION 2 – SITE CONSTRUCTION
02 930 EXTERIOR PLANTS
DIVISION 3 – CONCRETE STRUCTURE
03532 CONCRETE SCREED
DIVISION 4 – MASONRY
04 810 UNIT MASONRY ASSEMBLIES
DIVISION 5 – METALS
05 520 HANDRAILS AND RAILINGS
05 580 DECORATIVE METAL COLUMN COVER
DIVISION 6 - WOOD AND PLASTICS
06 200 FINISH CARPENTRY
06 400 ARCHITECTURAL WOODWORK
06 423 PANELING - PLASTIC LAMINATED FACED PANELING
DIVISION 7 - THERMAL AND MOISTURE PROTECTION
07 130 SHEET WATERPROOFING
07 410 METAL ROOF PANELS
07 415 METAL WALL PANELS
07 620 SHEET METAL FLASHING AND TRIM
07 841 THROUGH-PENETRATION FIRESTOP SYSTEMS
07 900 JOINT SEALERS
DIVISION 8 - DOORS AND WINDOWS
08 110 STEEL DOORS AND FRAMES
08 211 FLUSH WOOD DOORS
08 310 ACCESS DOORS AND PANELS
08 712 DOOR HARDWARE
08 800 GLAZING
08 872 ARCHITECTURAL GLAZING FILM
08 830 MIRRORS
08 841 POLYCARBONATE SHEET GLAZING
DIVISION 9 – FINISHES
09 111 NON—LOADBEARING METAL FRAMING
09 220 PORTLAND CEMENT PLASTER
09 260 GYPSUM BOARD ASSEMBLIES
09 300 TILE
09 380 CUT NATURAL STONE TILE
09 510 SUSPENDED METAL SHEET PANEL CEILINGS
09 547 ALUMINIUM METAL CEILING
09 900 PAINTING AND COATINGS
09 960 HIGH-PERFORMANCE COATINGS

DIVISION 10 – SPECIALTIES
10 155 TOILET COMPARTMENTS
10 200 LOUVERS AND VENTS
10 270 ACCESS FLOORING
10 430 EXTERIOR SIGNAGE
10 605 WIRE MESH PARTITIONS
10 710 EXTERIOR SHUTTERS
10 800 TOILET ACCESSORIES
DIVISION 11 – EQUIPMENTS
11 014 FACADE MAINTENANCE EQUIPMENT
DIVISION 12 – FURNISHINGS
12 615 FIXED SEATING
DIVISION 15 – PLUMBING FIXTURE
15410 PLUMBING FIXTURE
STEEL WORK
DIVISION 5 – METALS
05 100 STRUCTURAL STEEL
05 200 PAINTING
05 500 BEARING
05 600 METAL FABRICATION
PLUMBING AND DRAINAGE
DIVISION 22 - PLUMBING
22 00 10 GENERAL PROVISIONS FOR PLUMBING WORK SECTION
22 05 00 COMMON WORK RESULTS FOR PLUMBING
22 11 00 FACILITY WATER DISTRIBUTION
22 13 13 FACILITY SANITARY SEWERS
22 14 00 FACILITY DRAINAGE
22 40 00 PLUMBING FIXTURE SECTION
LOW VOLTAGE
DIVISION 26 - ELECTRICAL
26 00 10 GENERAL PROVISION
26 05 00 BASIC MATERIALS AND COMMON WORK
26 05 19 LOW VOLTAGE CABLE
26 05 26 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS
26 05 33 RACEWAY & BOXES FOR ELECTRICAL SYSTEMS
26 05 34 TRUCKING
26 05 36 CABLE TRAYS
26 05 53 ELECTRICAL IDENTIFICATION
26 24 13 SWITCHBOARDS
26 24 16 DISTRIBUTION BOARDS
26 27 13 ELECTRICITY METERING
26 27 26 WIRING DEVICES
26 28 13 FUSES
26 33 53 UNINTERRUPTIBLE POWER SYSTEM
26 41 13 LIGHTING PROTECTION SYSTEM
26 51 00 INTERIOR LIGHTING

26 56 00 EXTERIOR LIGHTING
MEASUREMENT AND PAYMENT
DIVISION 13 – MEASURE AND PAYMENT

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Confidential TRS – GTR - 1/394 Version ―5‖
Table of contents
1. GENERAL ....................................................................................................................10
1.1 MOBILIZATION.............................................................................................................10
1.1.1 Contractor‘s Mobilization Program......................................................................... 10
1.1.2 Water...................................................................................................................... 10
1.1.3 Temporary Power................................................................................................... 10
1.1.4 Construction Operations ........................................................................................ 10
1.1.5 Temporary Lighting ................................................................................................ 11
1.1.6 Communications Systems ..................................................................................... 11
1.1.7 Temporary Sanitary Facilities ................................................................................ 11
1.1.8 Fences ................................................................................................................... 11
1.1.9 Damage to Existing Property ................................................................................. 11
1.1.10 Security .................................................................................................................. 12
1.1.11 Temporary Plant and Facilities .............................................................................. 12
1.1.12 Land for Construction Purposes, Detours, Plant and other uses .......................... 12
1.1.13 Contractor Living Quarters Sheds and Stores ....................................................... 13
1.1.14 Workshop............................................................................................................... 13
1.1.15 Location and Protection of Utilities and Existing Structures .................................. 13
1.2 PROJECT INFORMATION SIGNS ....................................................................................15
1.3 PREPARATION OF CONSTRUCTION DRAWINGS .............................................................15
1.3.1 Definition ................................................................................................................ 15
1.3.2 Scope ..................................................................................................................... 16
1.3.3 Design Check......................................................................................................... 16
1.4 AS-BUILT SURVEYS DOCUMENTATION.........................................................................17
1.5 TOPOGRAPHICAL SURVEY ...........................................................................................17
1.6 GEOTECHNICAL INVESTIGATIONS .................................................................................19
1.7 TRAFFIC MANAGEMENT PLAN ......................................................................................20
1.7.1 General .................................................................................................................. 20
1.7.2 Traffic Management ............................................................................................... 23
1.7.3 Barricading and site protection .............................................................................. 23
1.7.4 Temporary Road Works......................................................................................... 24
1.7.5 Temporary Traffic Ramps ...................................................................................... 25
1.7.6 Traffic Control......................................................................................................... 25
1.7.7 Number of Lanes for Traffic Control....................................................................... 25
1.7.8 Half-Width Construction ......................................................................................... 25
1.7.9 Extraordinary Traffic............................................................................................... 26
1.7.10 Vertical Clearance.................................................................................................. 26
1.7.11 Materials for Traffic Control Devices...................................................................... 27
1.7.12 Measurement and payment ................................................................................... 27
1.8 WORKING IN AND DEALING WITH EXISTING WATER FLOWS ............................................28
1.9 NOISE REDUCTION ......................................................................................................29
1.10 PHOTOGRAPHS...........................................................................................................30
2. SITE CLEARING & DEMOLITION ..............................................................................32
2.1 GENERAL REQUIREMENTS...........................................................................................32
2.1.1 Site Clearing........................................................................................................... 32
2.1.2 Removal of Existing Trees ..................................................................................... 32
2.1.3 Topsoil Stripping .................................................................................................... 33
2.1.4 Disposal or Use of Cleared Material ...................................................................... 33
2.2 DEMOLITION ...............................................................................................................34

2.2.1 Demolition - General Requirements....................................................................... 34
2.2.2 Demolition of Buildings .......................................................................................... 35
2.2.3 Demolition of Culverts............................................................................................ 35
2.2.4 Demolition of U-Ditch ............................................................................................. 35
2.2.5 Removal of Designated Items................................................................................ 35
2.2.6 Removal of Curbs .................................................................................................. 35
2.2.7 Removal of Pavements.......................................................................................... 35
2.2.8 Removal of Traffic Signs........................................................................................ 36
2.2.9 Removal of Existing Graves................................................................................... 36
3. EARTHWORKS ...........................................................................................................39
3.1 GENERAL REQUIREMENTS...........................................................................................39
3.1.1 Plant ....................................................................................................................... 39
3.1.2 Pollution Control..................................................................................................... 39
3.1.3 Ground level........................................................................................................... 39
3.2 DEFINITIONS AND CLASSIFICATIONS.............................................................................40
3.2.1 Rock ....................................................................................................................... 40
3.2.2 Soft Rock................................................................................................................ 40
3.2.3 Hard Rock .............................................................................................................. 40
3.2.4 Rock Fill ................................................................................................................. 40
3.2.5 Classification of excavated materials..................................................................... 40
3.3 COMMON EXCAVATION................................................................................................41
3.3.1 General .................................................................................................................. 42
3.3.2 Clearing.................................................................................................................. 43
3.3.3 Excavation.............................................................................................................. 43
3.4 SHORED EXCAVATIONS...............................................................................................45
3.5 PREPARATION AND INSPECTION OF FOUNDATIONS ........................................................47
3.5.1 Foundation on Rock............................................................................................... 47
3.5.2 Foundations on Materials other than Rock ............................................................ 47
3.5.3 Inspection Pits and Boreholes ............................................................................... 47
3.5.4 Inspection of Foundations...................................................................................... 48
3.6 STRUCTURAL BACKFILL...............................................................................................48
3.7 BACKFILL FOR RETAINING WALL...................................................................................50
3.8 GRADE PREPARATION .................................................................................................51
3.8.1 General provisions ................................................................................................. 51
3.8.2 Reference standards.............................................................................................. 52
3.8.3 Materials................................................................................................................. 52
3.8.4 Execution of grade preparation.............................................................................. 52
3.8.5 Dimensional tolerances.......................................................................................... 53
3.8.6 Rectification of unsatisfactory grade preparation................................................... 53
3.8.7 Restitution of the work following testing................................................................. 53
3.8.8 Quality control ........................................................................................................ 53
3.9 WATER CONTROL .......................................................................................................54
3.9.1 Pumping and bailing .............................................................................................. 54
3.9.2 Placing concrete under water ................................................................................ 54
3.9.3 Control of water...................................................................................................... 54
3.10 BEDDING ....................................................................................................................56
3.10.1 General .................................................................................................................. 56
3.10.2 Sand Bedding......................................................................................................... 56
3.10.3 Stone Bedding for Foundation of Permanent Structures....................................... 56
3.11 TRENCHES FOR SERVICES ...........................................................................................56
3.12 DISPOSAL OF EXCAVATED AND SURPLUS MATERIALS.....................................................57
3.13 QUALITY CONTROL TEST..............................................................................................58
3.13.1 Collection of embankment materials from outside the project area....................... 59
3.14 RETAINING WALLS.......................................................................................................60
3.14.1 General requirements ............................................................................................ 60
3.14.2 Materials................................................................................................................. 60
3.14.3 Earthwork............................................................................................................... 60
3.14.4 Construction........................................................................................................... 60
3.14.5 Dimensional tolerances.......................................................................................... 60

4. PILING: CAST IN PLACE BORED PILE ....................................................................62
4.1 GENERAL REQUIREMENTS ...........................................................................................62
4.1.1 Records.................................................................................................................. 62
4.1.2 Programme and Progress Report.......................................................................... 63
4.1.3 Setting Out ............................................................................................................. 63
4.1.4 Disturbance and Noise........................................................................................... 63
4.1.5 Obstructions........................................................................................................... 63
4.1.6 Description ............................................................................................................. 64
4.1.7 Submittals .............................................................................................................. 64
4.2 MATERIALS.................................................................................................................65
4.2.1 Concrete................................................................................................................. 65
4.2.2 Reinforcement........................................................................................................ 65
4.2.3 Drilling Fluid ........................................................................................................... 66
4.2.4 Grout ...................................................................................................................... 67
4.2.5 Steel Casing........................................................................................................... 67
4.3 EXECUTION OF BORED CAST IN-PLACE PILES ..............................................................68
4.3.1 General .................................................................................................................. 68
4.3.2 Construction procedure.......................................................................................... 68
4.3.3 Setting out piles...................................................................................................... 69
4.3.4 Boring..................................................................................................................... 71
4.3.5 Inspection............................................................................................................... 73
4.3.6 Placing reinforcement ............................................................................................ 74
4.3.7 Placing concrete..................................................................................................... 75
4.3.8 Extraction of temporary casing .............................................................................. 77
4.3.9 Control methods..................................................................................................... 77
4.4 INTEGRITY TEST..........................................................................................................79
4.4.1 General .................................................................................................................. 79
4.4.2 Crosshole Sonic Logging (CSL)............................................................................. 79
4.4.3 Low strain dynamic test ......................................................................................... 80
4.4.4 Proof coring of pile toe ........................................................................................... 80
4.4.5 Concrete quantities ................................................................................................ 81
4.4.6 Testing ................................................................................................................... 81
4.4.7 Monitoring and records .......................................................................................... 82
4.5 PILE LOAD TEST: GENERAL.........................................................................................85
4.5.1 Static Axial Compressive Load test: General Requirements................................. 85
4.5.2 Construction of a Pilot Pile..................................................................................... 86
4.5.3 Safety Precautions................................................................................................. 87
4.5.4 Testing ................................................................................................................... 88
4.5.5 Supervision ............................................................................................................ 89
4.6 VERTICAL PILE LOAD TEST..........................................................................................92
4.6.1 Introduction ............................................................................................................ 92
4.6.2 Definitions .............................................................................................................. 92
4.6.3 Ultimate Vertical Pile Load Test............................................................................. 93
4.6.4 Working Vertical Pile load Test.............................................................................. 95
4.7 LATERAL PILE LOAD TEST ...........................................................................................97
4.7.1 Static Lateral Load Test: General Requirements................................................... 97
4.7.2 Ultimate Lateral Pile Load Test Procedure ............................................................ 99
4.7.3 Working Lateral Pile Load Test Procedure .......................................................... 101
4.8 HIGH STRAIN DYNAMIC TESTING OF PILES – PILE DRIVING ANALYSIS (PDA TEST).......102
4.8.1 Scope ................................................................................................................... 102
4.8.2 Definitions ............................................................................................................ 102
4.8.3 Schedule for load testing ..................................................................................... 103
4.8.4 Apparatus for applying impact forces................................................................... 103
4.8.5 Apparatus for obtaining dynamic measurements ................................................ 103
4.8.6 Procedure............................................................................................................. 103
4.9 SUMMARY ON PILE LOAD TEST ..................................................................................104
5. CONCRETE ...............................................................................................................107
5.1 DESCRIPTION ...........................................................................................................107
5.2 DEFINITIONS.............................................................................................................107

5.3 MATERIALS FOR CONCRETE.......................................................................................107
5.3.1 General Provisions............................................................................................... 107
5.3.2 Cement................................................................................................................. 108
5.3.3 Aggregate for Concrete........................................................................................ 109
5.3.4 Water for Concrete and Mortar ............................................................................ 112
5.3.5 Alcali Aggregate Reactivity .................................................................................. 112
5.3.6 Admixtures ........................................................................................................... 113
5.4 DESIGN OF CONCRETE MIXES...................................................................................114
5.4.1 Grades of Concrete.............................................................................................. 114
5.4.2 Class Requirements............................................................................................. 115
5.4.3 Design of Proposed Mixes ................................................................................... 116
5.4.4 Water - Cement Ratio .......................................................................................... 117
5.4.5 Quality Control of Concrete Production ............................................................... 117
5.4.6 Failure to Comply with Requirements.................................................................. 119
5.5 DETERMINATION OF MODULUS OF ELASTICITY, CREEP AND SHRINKAGE COEFFICIENTS..119
5.5.1 Modulus of elasticity tests .................................................................................... 119
5.6 MIXING CONCRETE....................................................................................................120
5.7 TRANSPORT OF CONCRETE........................................................................................121
5.8 PLACING OF CONCRETE.............................................................................................122
5.8.1 Consent for Placing.............................................................................................. 122
5.8.2 Preparation of Surfaces to Receive Concrete ..................................................... 122
5.8.3 Placing Procedures.............................................................................................. 122
5.8.4 Ready Mix Concrete and Pumping ...................................................................... 124
5.8.5 Interruption to Placing .......................................................................................... 126
5.8.6 Dimension of Pours.............................................................................................. 126
5.8.7 Placing Sequence ................................................................................................ 127
5.8.8 Compaction of concrete ....................................................................................... 127
5.8.9 Records of concrete placing ................................................................................ 128
5.9 CLEAR COVER..........................................................................................................128
5.10 CURING OF CONCRETE..............................................................................................129
5.10.1 General Requirements......................................................................................... 129
5.10.2 Loss of Moisture................................................................................................... 130
5.10.3 Curing compound................................................................................................. 130
5.10.4 Steam curing........................................................................................................ 130
5.10.5 Limitation of Temperature Differentials................................................................ 131
5.10.6 Control of Thermal Cracks in Massive Structures ............................................... 131
5.11 PROTECTION OF FRESH CONCRETE ..........................................................................132
5.12 CONCRETING IN HOT WEATHER ................................................................................132
5.13 CONSTRUCTION JOINTS ............................................................................................133
5.13.1 General ................................................................................................................ 133
5.13.2 Bonding and surface preparation......................................................................... 134
5.14 MORTAR...................................................................................................................134
5.14.1 Cementitious Mortar............................................................................................. 134
5.14.2 Non Shrink Mortar................................................................................................ 135
5.14.3 Epoxy Resin Adhesives ....................................................................................... 135
5.14.4 Non Shrink Mortar................................................................................................ 135
5.15 CONCRETE FOR NON STRUCTURAL PURPOSES..........................................................135
5.15.1 Material ................................................................................................................ 135
5.15.2 Grouting of pockets and holes and underpinning of baseplates.......................... 136
5.15.3 Hand mixed concrete ........................................................................................... 136
5.15.4 Items cast in concrete .......................................................................................... 137
5.16 FORMWORK..............................................................................................................137
5.17 CONCRETE PAINTING................................................................................................137
5.17.1 Paint ..................................................................................................................... 138
5.17.2 Application............................................................................................................ 138
6. FORMWORK..............................................................................................................141
6.1 GENERAL PROVISIONS ..............................................................................................141
6.2 MATERIALS...............................................................................................................141
6.2.1 Design of formwork and falsework....................................................................... 142

6.3 TOLERANCES FOR CONSTRUCTION............................................................................151
6.3.1 Tolerances for open foundation ........................................................................... 151
6.3.2 Tolerances for bored piles ................................................................................... 151
6.3.3 Tolerances for pile cap......................................................................................... 151
6.3.4 Tolerances for other concrete elements .............................................................. 151
6.3.5 Tolerances for precast and prestressed concrete ............................................... 152
6.3.6 Tolerances for sweep or horizontal alignment ..................................................... 154
6.3.7 Completed segment tolerances for segmental box girder bridge construction ... 154
7. REINFORCEMENT ....................................................................................................156
7.1 GENERAL .................................................................................................................156
7.1.1 Materials of reinforcement ................................................................................... 156
7.1.2 Bar lists and bending diagrams............................................................................ 156
7.1.3 Steel Quality and Supply...................................................................................... 156
7.1.4 Fabrication of reinforcement & Bending .............................................................. 157
7.1.5 Handling and Placing Reinforcement................................................................... 157
7.1.6 Splicing of Bars .................................................................................................... 159
8. NOT USED.................................................................................................................162
9. PRESTRESSING .......................................................................................................163
9.1 MATERIAL.................................................................................................................163
9.1.1 Strand................................................................................................................... 163
9.1.2 Wire...................................................................................................................... 163
9.1.3 Bars...................................................................................................................... 163
9.1.4 Post-tensioning Anchorages................................................................................ 163
9.1.5 Prestressing ducts ............................................................................................... 164
9.1.6 Sheathing (Metal ducts) ....................................................................................... 164
9.1.7 Duct fittings .......................................................................................................... 164
9.1.8 Polyethylene ducts............................................................................................... 165
9.1.9 Rigid steel pipes................................................................................................... 165
9.2 IDENTIFICATION AND TESTING ...................................................................................165
9.3 DELIVERY AND STORAGE...........................................................................................166
9.4 PLACEMENT OF DUCTS, STEEL, AND ANCHORAGE HARDWARE......................................166
9.4.1 Placement of internal prestressing ducts............................................................. 166
9.4.2 Prestressing placement ....................................................................................... 167
9.4.3 Protection of steel after installation...................................................................... 167
9.4.4 Corrosion inhibitor................................................................................................ 168
9.4.5 Placement of anchorage hardware...................................................................... 168
9.5 PROTECTION OF PRESTRESSING STEEL ....................................................................168
9.6 TENSIONING .............................................................................................................169
9.6.1 Concrete strength................................................................................................. 169
9.6.2 Prestressing equipment ....................................................................................... 169
9.6.3 Measurement of stress ........................................................................................ 170
9.7 GROUTING................................................................................................................171
9.7.1 Preparation of ducts............................................................................................. 171
9.7.2 Materials............................................................................................................... 171
9.7.3 Equipment............................................................................................................ 171
9.7.4 Mixing of grout...................................................................................................... 172
9.7.5 Injection of grout................................................................................................... 172
9.8 TOLERANCES FOR STRAND POSITIONS .......................................................................173
10. SPECIFIC REQUIREMENTS FOR PRE TENSIONNED GIRDERS .........................175
10.1 GENERAL .................................................................................................................175
10.2 MATERIALS...............................................................................................................175
10.2.1 Concrete............................................................................................................... 175
10.2.2 Reinforcement...................................................................................................... 175
10.2.3 Pre-stressed Concrete ......................................................................................... 175
10.2.4 De-bonding Tubes ............................................................................................... 175
10.3 CASTING YARD .........................................................................................................175
10.4 SUBMITTALS .............................................................................................................176

10.5 CONSTRUCTION SEQUENCE ......................................................................................177
10.6 FORMS FOR PRECAST PRE-STRESSED GIRDERS ........................................................178
10.6.1 General ................................................................................................................ 178
10.6.2 Formwork for precast/prestressed concrete ........................................................ 178
10.7 PERMISSIBLE TOLERANCES .......................................................................................179
10.8 CONCRETING FOR PRECAST GIRDERS .......................................................................179
10.9 HANDLING, STORAGE AND TRANSPORTATION.............................................................180
10.9.1 Handling............................................................................................................... 180
10.9.2 Storage................................................................................................................. 180
10.9.3 Transportation...................................................................................................... 181
10.10 TEMPORARY SUPPORTS AND CONNECTIONS ..............................................................182
10.11 QUALITY CONTROL AND TESTING MATERIALS.............................................................182
10.11.1 Tests of Precast Pre-tensioned Elements ........................................................... 182
10.12 SHOP DRAWINGS AND DESIGN CALCULATIONS FOR CONSTRUCTION PROCEDURES ..........185
11. ROAD RE-INSTATEMENT........................................................................................187
11.1 GENERAL PROVISIONS ..............................................................................................187
11.2 REFERENCE STANDARDS...........................................................................................187
11.3 MATERIALS...............................................................................................................187
11.3.1 Execution of grade preparation............................................................................ 187
11.3.2 Dimensional tolerances........................................................................................ 188
11.3.3 Rectification of unsatisfactory grade preparation................................................. 188
11.3.4 Restitution of the work following testing............................................................... 188
11.3.5 Quality control ...................................................................................................... 189
11.4 SUB-BASE AND BASE COURSES ................................................................................189
11.4.1 General provisions ............................................................................................... 189
11.4.2 Reference standards............................................................................................ 189
11.4.3 Aggregate Sub-base ............................................................................................ 190
11.4.4 Aggregate Base ................................................................................................... 192
11.4.5 Asphaltic materials............................................................................................... 196
11.4.6 Shoulders............................................................................................................. 196
11.4.7 Geotextile............................................................................................................. 199
11.5 SURFACING COURSES...............................................................................................202
11.5.2 General requirements for asphaltic bound bases and surfacing ......................... 204
11.5.3 Asphaltic prime coat............................................................................................. 217
11.5.4 Asphaltic tack coat ............................................................................................... 220
11.5.5 Asphalt concrete surfacing................................................................................... 222
11.5.6 Construction Methods .......................................................................................... 226
11.6 CONCRETE KERB AND GUTTER...................................................................................229
11.6.1 General provisions ............................................................................................... 229
11.6.3 Materials............................................................................................................... 229
11.6.4 Construction methods .......................................................................................... 229
11.7 PRECAST CONCRETE KERBS, SLABS AND EDGINGS......................................................231
11.7.2 Materials............................................................................................................... 231
11.8 CONCRETE BARRIER .................................................................................................232
11.8.1 General ................................................................................................................ 232
11.8.2 Precast concrete median barriers........................................................................ 232
11.8.3 Cast in place concrete median barriers ............................................................... 234
11.9 SIDE WALK PAVEMENT...............................................................................................237
11.9.1 General ................................................................................................................ 237
11.9.3 Material ................................................................................................................ 237
11.10 INCIDENTALS RELATED TO ROAD CONSTRUCTION ........................................................241
11.10.1 Markers and guide posts...................................................................................... 241
11.10.2 Road signs ........................................................................................................... 241

11.10.3 Road markings..................................................................................................... 249
11.11 GRASSING................................................................................................................254
11.11.1 Description ........................................................................................................... 254
11.11.2 Materials............................................................................................................... 254
11.11.3 Construction Requirements ................................................................................. 255
11.11.4 Maintenance of Sprigged Areas........................................................................... 257
11.11.5 Measurement and Payment................................................................................. 257
11.12 NOT USED ................................................................................................................257
11.13 TOP SOILING.............................................................................................................257
11.13.1 Description ........................................................................................................... 257
11.13.2 Materials............................................................................................................... 258
11.13.3 Obtaining topsoil .................................................................................................. 258
11.13.5 Placing Topsoil..................................................................................................... 259
11.14 NOT USED ................................................................................................................260
12. BEARINGS.................................................................................................................261
12.1 GENERAL .................................................................................................................261
12.2 WORKING DRAWINGS ................................................................................................261
12.3 MATERIALS...............................................................................................................262
12.4 PACKING, HANDLING AND STORAGE ..........................................................................262
12.5 MANUFACTURE OR FABRICATION ...............................................................................262
12.5.1 Fabrication tolerances.......................................................................................... 262
12.5.2 Testing and acceptance....................................................................................... 262
12.5.3 Construction and installation................................................................................ 263
12.6 ELASTOMERIC BEARINGS...........................................................................................264
12.6.1 General ................................................................................................................ 264
12.6.2 Materials............................................................................................................... 264
12.6.3 Testing ................................................................................................................. 265
12.6.4 Installation............................................................................................................ 266
12.7 POT BEARINGS..........................................................................................................266
12.7.1 Type of mechanical pot bearing........................................................................... 266
12.7.2 Materials............................................................................................................... 266
12.7.3 Fabrication details................................................................................................ 267
12.7.4 Sampling and testing ........................................................................................... 268
12.7.5 Installation............................................................................................................ 269
12.8 ANCHOR BOLTS ........................................................................................................269
12.8.1 Materials............................................................................................................... 269
12.8.2 Fabrication ........................................................................................................... 269
12.8.3 Installation............................................................................................................ 269
13. STRUCTURAL STEEL WORKS ...............................................................................271
13.1 GENERAL .................................................................................................................271
13.1.1 Introduction .......................................................................................................... 271
13.1.2 Scope of Specifications........................................................................................ 271
13.1.3 Submittals ............................................................................................................ 273
13.1.4 Furnishing of Information ..................................................................................... 273
13.1.5 Applicable Code of Practise................................................................................. 275
13.1.6 Products/ Materials .............................................................................................. 276
13.1.7 Storage of Materials............................................................................................. 277
13.2 WELDED STRUCTURE ...............................................................................................278
13.2.1 General ................................................................................................................ 278
13.2.2 Products ............................................................................................................... 278
13.2.3 Executions............................................................................................................ 278
13.3 BOLTED STRUCTURE ................................................................................................284
13.3.1 General ................................................................................................................ 284
13.3.2 Products ............................................................................................................... 284
13.3.3 Executions............................................................................................................ 284
13.4 PAINTING WORKS .....................................................................................................287
13.4.1 General ................................................................................................................ 287

13.4.2 Products/ Materials .............................................................................................. 289
13.4.3 Execution ............................................................................................................. 289
13.5 QUALITY CONTROL & TESTING REQUIREMENTS ..........................................................293
13.5.1 General ................................................................................................................ 293
13.5.2 Products ............................................................................................................... 293
Not applicable ...................................................................................................................... 293
13.5.3 Execution ............................................................................................................. 293
13.6 ERECTION ................................................................................................................294
13.6.1 General ................................................................................................................ 294
13.6.2 Products ............................................................................................................... 295
Not applicable ...................................................................................................................... 295
13.6.3 Execution ............................................................................................................. 295
14. DRAINAGE ................................................................................................................300
14.1 GENERAL .................................................................................................................300
14.1.1 Scope of Works.................................................................................................... 300
14.1.2 Document Submittal............................................................................................. 300
14.1.3 Product Delivery, Handling and Storage.............................................................. 301
14.1.4 Warranty............................................................................................................... 301
14.1.5 Spare parts........................................................................................................... 301
14.1.6 Setting Out of Works............................................................................................ 301
14.1.7 Pavement Restoration ......................................................................................... 301
14.1.8 Earthworks for Trenches and Pits........................................................................ 302
14.1.9 Concrete for Pipes, Drains and Structures .......................................................... 302
14.1.10 Installation of Pipes.............................................................................................. 302
14.1.11 Quality Assurance................................................................................................ 302
14.2 REFERENCE STANDARDS...........................................................................................303
14.3 CAST IRON PIPING.....................................................................................................306
14.3.1 Material ................................................................................................................ 306
14.3.2 Fittings and assemblies ....................................................................................... 306
14.3.3 Installation............................................................................................................ 307
14.3.4 Tests .................................................................................................................... 308
14.4 SUBSURFACE DRAIN PIPES .......................................................................................308
14.4.1 Material ................................................................................................................ 308
14.4.2 Installation............................................................................................................ 310
14.5 REINFORCED CONCRETE PIPING ................................................................................310
14.5.1 Reinforced concrete pipes ................................................................................... 310
14.5.2 Manholes and chambers...................................................................................... 315
14.6 FIELD TESTS.............................................................................................................318
14.6.1 General: ............................................................................................................... 318
14.6.2 Air Testing:........................................................................................................... 318
14.6.3 Water Testing:...................................................................................................... 319
14.7 DRAINAGE ACCESSORIES ..........................................................................................319
14.7.1 Scope ................................................................................................................... 319
14.7.2 Fabrication ........................................................................................................... 319
14.7.3 Placement ............................................................................................................ 320
14.7.4 Finishing............................................................................................................... 320
14.8 CONCRETE GUTTERS ................................................................................................320
14.9 DRAINAGE BLANKETS ................................................................................................320
14.10 GEO-COMPOSITE DRAINAGE SYSTEM.........................................................................320
15. UTILITIES WORKS....................................................................................................322
15.1 UTILITIES DIVERSION AND PROTECTION .....................................................................322
15.1.1 Description ........................................................................................................... 322
15.1.2 General Requirements......................................................................................... 322
15.1.3 Submittals and documents................................................................................... 322
15.2 NON-PRESSURE PIPEWORK ......................................................................................323
15.2.2 Cast iron piping .................................................................................................... 331
15.2.3 Steel Pipes........................................................................................................... 332

15.2.4 Polyethylene ducts............................................................................................... 334
15.2.5 Poly-Vinyl Chloride (PVC) Plastic Pipes .............................................................. 335
15.2.6 Unplasticized Poly-Vinyl Chloride (uPVC) Plastic Pipes...................................... 337
15.2.7 Subsurface Drain Pipes ....................................................................................... 339
15.2.8 Reinforced Concrete Pipes .................................................................................. 339
15.2.9 Field tests............................................................................................................. 339
15.2.10 Drainage accessories .......................................................................................... 339
15.3 PRESSURE PIPEWORK ..............................................................................................339
15.3.1 Definitions ............................................................................................................ 339
15.3.3 General requirements .......................................................................................... 347
15.3.4 Materials............................................................................................................... 351
15.3.5 Installation............................................................................................................ 368
15.3.6 Cleaning, disinfection and testing ........................................................................ 378
15.4 ELECTRICAL POWER CABLES ....................................................................................380
15.5 TELECOMMUNICATION CABLES ..................................................................................381
15.6 SECURED COMMUNICATION LINES .............................................................................381
15.7 MEASUREMENT AND PAYMENT ..................................................................................381
16. EQUIPMENTS............................................................................................................383
16.1 JOINT SEALS.............................................................................................................383
16.1.1 Expansion joints................................................................................................... 383
16.1.2 Building Expansion Joints .................................................................................... 383
16.1.3 Specification for strip seal expansion joint........................................................... 384
16.1.4 Material ................................................................................................................ 384
16.1.5 Fabrication (Pre-installation)................................................................................ 384
16.1.6 Handling and Storage .......................................................................................... 385
16.1.7 Supply / Installation.............................................................................................. 385
16.1.8 Acceptance Criteria.............................................................................................. 386
16.2 WATER-STOPS..........................................................................................................386
16.3 JOINTING MATERIALS ................................................................................................387
16.4 CONCRETE WATERPROOFING....................................................................................388
16.4.1 Materials............................................................................................................... 388
16.4.2 Inspection, Delivery and Storage......................................................................... 388
16.4.3 Preparation of Surface ......................................................................................... 389
16.4.4 Application............................................................................................................ 389
16.4.5 Damage Patching................................................................................................. 390
16.4.6 Protection Course ................................................................................................ 390
16.5 INTERFACE ITEMS .....................................................................................................391
16.5.1 Track starter bars................................................................................................. 391
16.5.2 Earthing bars........................................................................................................ 391
16.5.3 Stray current bars................................................................................................. 392
16.5.4 PVC pipes for opening reservation in concrete structures .................................. 392
16.6 LIGHTNING PROTECTION ...........................................................................................393
16.6.1 General: ............................................................................................................... 393
16.6.2 Materials:.............................................................................................................. 393
16.7 NOT USED................................................................................................................393
16.8 NOT USED................................................................................................................393
16.9 NOT USED................................................................................................................393
16.10 NOT USED................................................................................................................393
16.11 RAIL CAMBER IN INTERFACE WITH TRACK CONTRACTOR (CP08).................................393

1. General
1.1 MOBILIZATION
1.1.1 Contractor’s Mobilization Program
a) No more than 30 calendar days after the Commencement Date, the Contractor
shall submit a several plans of the Project Management Plan to the Employer for
his approval.
b) The program shall include a schedule noting the anticipated arrival of all
construction equipment and facilities as well as the arrival of all-key Contractor
personnel and subcontractors.
c) The mobilization program shall include a layout plan noting the location, size and
arrangement of all temporary facilities, including security fencing and entrance and
exit gates, sewage and water lines and systems, electrical supply and access and
facility roads.
d) The Contractor shall provide equipment, services and facilities as stipulated under
this Contract. The Contractor shall complete construction of all other temporary
facilities and mobilization of all key personnel, equipment and plant no later than
30 days after the Date of Commencement.
1.1.2 Water
a) All water required for and in connection with the equipment and plants, devices,
dust control, for settling of backfill material or for any other use as may be required
for proper completion of the Works, shall be provided by and at the expense of the
Contractor. No separate payment for water used or required will be made and all
costs in connection therewith shall be included in the related Bill Of Quantities.
b) The Contractor shall provide a supply of sufficient bottled drinking water from an
acceptable source to all of the Contractor‘s employees and the Employer‘s and
Engineer‘s staff, including provisions for such at the Employer‘s and Engineer‘s
installations.
1.1.3 Temporary Power
Temporary power consists of the following:
1.1.4 Construction Operations
a) Contractor shall provide all power for operation of his plant and equipment, or for
any other use, including building cooling and lighting all facilities and installations.
b) If power is available, the Contractor shall arrange with the utility company to
provide and pay for the service required for power and lighting, for all facilities and
installations.

1.1.5 Temporary Lighting
a) The Contractor shall provide temporary lighting for all buildings, to protect the
Works and maintain suitable working conditions. Temporary lighting shall be
maintained until the Employer has accepted the Works.
b) The Contractor shall provide and install circuit and branch wiring, with area
distribution boxes located so that power and lighting are available throughout the
construction site.
c) Generators with a suitable capacity shall be furnished by the Contractor to cope
with the cases of power supply cut-off.
1.1.6 Communications Systems
a) The Contractor shall make all necessary arrangements and pay all installation and
usage charges for telephone, internet in his offices at the Site.
b) Requirements for communication systems in all offices shall be in accordance with
requirements of General Requirement. Requirements for internet connection
speed, in the offices and accommodations shall be a minimum of 512Kb, for the
proper use of Electronic Data Management System (EDMS).
1.1.7 Temporary Sanitary Facilities
a) The Contractor shall furnish temporary sanitary facilities at the Site, as provided
herein, for the needs of all construction workers and others performing work or
furnishing services on the Project. Sanitary facilities shall be of reasonable
capacity, properly maintained throughout the construction period, and obscured
from public view, to the greatest practical extent. If chemically treated type toilets
are used, at least one such toilet will be furnished for every 20 people. The
Contractor shall enforce the use of such sanitary facilities by all personnel at the
Site.
1.1.8 Fences
a) The Contractor until completion of the Works shall maintain all existing fences
affected by the Works. Fences, which interfere with construction operations, shall
not be relocated or dismantled, until written permission is obtained from the fence
owner.
1.1.9 Damage to Existing Property
a) The Contractor will be held responsible for any damage to existing structures,
works, materials, or equipment because of his operations or the operations of any
of his subcontractors. The Contractor shall repair or replace any damaged
structures, works, materials, or equipment to the satisfaction of the Engineer, and
at no additional cost to the Employer.
b) The Contractor shall be responsible for all damage to streets, roads, railroads,
curbs, sidewalks, highways, shoulders, ditches, embankment, culverts, bridges, or
other public or private property, which may be caused by the transport of
equipment, materials, or people to or from the Works.

1.1.10 Security
a) The Contractor shall be responsible for the protection of the Site, and all work,
materials, equipment, and all existing or completed facilities thereon, against
vandals and other unauthorized persons.
1.1.11 Temporary Plant and Facilities
a) The Contractor shall construct suitable entry and exit roads to, from and around all
temporary facilities.
b) Security fencing with at least three (3) strands of barbed wire shall be constructed
around all temporary facilities. Fencing shall be at least 1.8 meters high and
provided with lockable gates at each entry and exit point.
c) Suitable external lighting shall be provided at the entrance to all buildings.
d) All sanitary facilities shall be connected to a suitable sewage system.
e) During the performance of the works the Contractor shall maintain all temporary
facilities in suitable manner to the satisfaction of the Engineer.
f) Upon completion of the Works, or as otherwise directed by the Engineer, all plant,
temporary facilities and encumbrances used for the Works shall be removed, the
area affected properly cleaned and repaired and, if necessary, the property owner
paid.
1.1.12 Land for Construction Purposes, Detours, Plant and other uses
a) The Employer will provide access to the site along the alignment for the
Contractor‘s Works, which constitutes the limit of the Right of Way.
b) The Contractor shall acquire all additional working areas in the vicinity of the
Works or elsewhere for his camp, yard, for all central mixing plants for concrete
and bituminous materials, for the storage of equipment, for his own office
buildings, housing, quarters, stores, plant yard, workshops, precast yard, offices
and any additional areas required for construction purposes and access or other
uses.
c) Before entering the working site, the Contractor shall give written notice to the
Employer. The Contractor shall give separate notices for each owner and occupier
or authority having charge over the working sites.
d) Before entering any additional working areas the Contractor shall obtain, and
forward to the Employer, a copy of the written consent of the owner and occupier
or authority having charge over the land, and stating the purposes for which such
land is to be used. The Contractor shall define the extent and periods of
occupation for which such consent is granted.
e) The Contractor shall select, arrange for, and if necessary pay for the use of sites
for construction purposes, detours, plant and other uses necessary for the
execution of the Work.

f) Before any land belonging to the Government or to a private landowner is used for
any purposes in connection with the execution of the Work, the Employer‘s
approval shall be obtained.
g) Prior to placing the facilities in any area, all clearing and grubbing operations shall
be to the satisfaction of the Engineer. The ground elevation of all temporary
facilities shall be a minimum 20 cm above the adjacent existing ground. The
surface shall be adequately sloped to allow rainwater to adequately drain.
h) If any utility for water, electricity, drainage, etc., passing through the temporary site
will be affected by the Works, the Contractor at his own expense, shall provide a
satisfactory re-alignment or alternative in full working order to the satisfaction of
the owner of the utility and the Engineer, before the cutting or removal or
relocation of the existing utility.
i) On completion of the Contract, or earlier if so directed by the Engineer, all plant,
temporary facilities and any other encumbrances shall be removed, the site and
land use areas shall be properly cleaned, all damage made good, and, if
necessary, the land-owner paid for the use of the land.
1.1.13 Contractor Living Quarters Sheds and Stores
a) The Contractor shall supply, equip and maintain for the Contract period all his own
living accommodation, sheds and stores necessary for the execution of the Work,
and shall make his own arrangements, subject to the approval of the Engineer,
with the owner of any land required and, if necessary, pay for its use.
1.1.14 Workshop
a) The Contractor shall have on the Site a suitable workshop, adequately equipped
and provided with utilities, to allow for repairs of the equipment employed to carry
out the Works. He shall also provide a warehouse for the equipment spare parts,
mainly for the parts that frequently fail or are difficult to procure. A chief foreman
qualified for mechanical repairs; with an adequate labour force must manage the
workshop.
1.1.15 Location and Protection of Utilities and Existing Structures
a) Before commencing construction work the Contractor shall undertake a survey to
establish the detailed location of all utilities affected by the Works. Survey results
shall be recorded in plan form to the satisfaction of the Engineer and surface pegs
fixed on the site to indicate the location of all underground utilities. These pegs
shall remain for the duration of the contract.
b) Where works of either a temporary or permanent nature are to be undertaken by
the Contractor in the vicinity of utilities, the Contractor shall adopt appropriate
construction methods, provide adequate protective devices and take precautionary
measures, in order to avoid damage to the utilities. Any damage to utilities caused
directly or indirectly by the Contractor's work will be considered the Contractor's
responsibility.

c) The Contractor shall be responsible for locating all existing structures affected by
or affecting the work under this Contract, prior to the start of construction. Any
delay or extra expense to the Contractor due to the encountering of existing
structures shall not constitute a claim for extra work, additional payment, time or
damages.
Measurement
- Mobilization will not be measured, but paid as a lump sum.
Payment
a. Payment for Mobilization shall include:
Transport of Contractor‘s Equipment, on the basis of the list of Equipment
submitted with the Bid or any additional Equipment required, to the sites where
they are to be used on the bridges and roads under Construction, and their
installation;
The supply, installation and maintenance of Contractor vehicles, living quarters,
offices, laboratories, workshops, stores, communications, facilities, etc.
The construction and removal of temporary access roads
Land For Construction Purposes, Detours, Plant and Other Uses
Living Quarters, Sheds, Stores and Temporary Facilities
Location and Protection of Utilities and Existing Structures
Mobilization of Equipment, plant, materials, personnel and any other such matter
required for the works.
Such other items as are expressly stated in the Specifications as being included in
"Mobilization".
Payment shall also cover the dismantling of the work site by the Contractor, with
the removal of all the installations, constructional plant and equipment, so that the
site is restored to the state it was in before the installations, plant and equipment
were placed there.
b. Payments shall be made in installments as follows:
10% (ten percent) with the Contractor‘s interim payment certification after getting
the approval by the Engineer and Employer for the Contractor‘s mobilization plan
and breakdown of this item.
80% (eighty percent) in installments throughout the remaining duration of the
construction period, payment for each time will be based on the volume of the
accepted works following approval mobilization plan.
10% (ten percent) in the Final Certificate on completion of all necessary
dismantling and restoration of the Site.

c. Unless otherwise stated or separately itemized in the Bill of Quantities all costs for
all mobilizations and demobilizations necessary for the completion of the works
shall be included in this item. No additional payment will be made for any
additional mobilization of personnel, plant, equipment and materials.
Pay Item Description Unit
01100-1 Mobilization lump sum
1.2 PROJECT INFORMATION SIGNS
a) Within the mobilization period, the Contractor shall erect project information signs
at locations as required by the Engineer. The size and material of the project
information signs and the message thereon, and style of lettering and colour, shall
be determined by the Engineer. The number of Project Information Signs shall be
as indicated in the BOQ. The Contractor shall maintain the signs, move them to
the suitable place if required during construction period and remove them upon
completion of the Construction Period.
Measurement
The quantities to be paid for shall be the actual number of project information
signs, furnished, placed and accepted in accordance with the Drawings, and as
directed by the Engineer.
The quantity shall be for the complete sign including foundations, post(s) and sign
face(s).
Payment
The work measured as provided above shall be paid for at the Contract unit price
for the type of sign listed below.
The payment shall be full compensation for furnishing and placing all information
signs, posts, foundations, sign face(s), excavation, back-fill and reinstatement,
including labor, equipment, tools and incidentals necessary to complete the work
as shown on the Drawings.
01100-2 Project Information Signs (2mX3m) each
1.3 PREPARATION OF CONSTRUCTION DRAWINGS
1.3.1 Definition
a) The ―Preparation of Construction Drawings‖ shall mean the checking of all
structural designs and the preparation and submission of all necessary design
calculations, Construction Drawings, reports and where necessary amended
designs.

1.3.2 Scope
a) The Contractor shall check all designs as given in the Contract documents or
provided by the Engineer and shall produce all necessary design calculations to
confirm the original outline design and all temporary works for each structure at
every stage of construction.
b) The Contractor shall collect all informations and datas available related to site,
other Designated Contractors including the possible deviations, actual structure
position (including tolerances), as built information before precasting any girder, or
upper storey.
c) The Contractor shall check the impact on the Employer‘s design due to site non
conformity. This redesign effort shall be borne by the Contractor.
d) The Contractor will be responsible for the design of all permanent and temporary
structures and for ensuring that all structures are stable at every stage of the
construction.
1.3.3 Design Check
a) The design check shall be carried out by a suitably experienced and qualified In-
House Engineer who shall be in the employment of the Contractor. The checking
Engineer shall have wide knowledge and experience of the appropriate design
standards.
b) The checking Engineer shall be available at all times during the construction
period to both check and advise the Contractor on design matters.
c) The Contractor shall submit a full C.V. for the proposed Checking Engineer for the
approval of the Engineer.
d) Subject to the approval by the Engineer the Contractor will be allowed to employ a
sub-consultant to assist the checking Engineer in the execution of his duties. Any
such sub-consultant or sub-consultants staff shall at all times be under the
authority of the Contractor‘s checking Engineer.
e) The Contractor shall submit full details of any proposed sub-consultant including
details of company experience and CV‘s for all staff who will work on the project,
for the approval of the Engineer.
f) The Contractor shall submit a schedule of checking works for the approval of the
Engineer.
g) Should the Contractor wish to amend the design the Contractor shall submit a
report including design summary, full design calculations, method statement for
construction and reasons for the proposed change. Any such amendment shall be
subject to the approval of the Engineer and the Employer and if accepted shall be
carried out in strict compliance with the approved method statement. These
amendments shall be at the Contractor‘s cost, which may also include variation of
the Design Review of the Employer.

h) Any increase or decrease in quantities as a result of a change shall be paid at the
appropriate bid price schedule unit rate.
Measurement
The Contractor‘s Construction Drawings shall not be measured but shall be paid as a
lump sum.
Payment
The lump sum shall be paid after completion, submission and acceptance by the
Engineer and Employer of the Contractor‘s design check.
The lump sum shall include all costs associated with all design checks including
sub-consultant costs, computer costs, reports, design calculations, all drawings
including Construction Drawings, As-built drawings, printing, reproductions and
any other costs arising from the required design checks.
No additional payments will be made beyond the lump sum price included within
the Bid price Schedule.
01100-3 Construction Drawings Lump Sum
1.4 AS-BUILT SURVEYS DOCUMENTATION
a) As Constructed Documentation and other documentation including survey
measurements and reports, and materials test results shall be submitted and
approved by the Employer prior to obtaining Final Taking over and Performance
Bond certificate from to the Employer
b) The Contractor shall set points on the lateral webs (at the location to be agreed by
the Engineer) at the approximate change in curvature points, but not less than 200
meters apart. The Contractor shall traverse through these points in accordance
with the control surveys second order, Class 2 traverse standards. From this
adjusted traverse, final structure as-built line and grade shall be determined by the
Contractor. The as-built section shall include right and left top of external parapet
walls.
c) Compliance with this section shall be deemed to be a general obligation of the
Contractor and shall be deemed to be included in the Contractor‘s unit rates and
prices.‖
1.5 TOPOGRAPHICAL SURVEY
a) The Contractor The Contractor shall be responsible at the very start of work of
taking-over of reference point from the Engineer, establishment of control points,
triangulation points, bench marks, grid layout for all the piers and other structures
maintaining horizontal and vertical control within the permissible limits,

incorporating changes (if any), submission of full data in the tabulation form and
survey drawings.
b) The Contractor shall be verify the adequacy of the data received from the
Engineer and shall report to the Engineer of any discrepancy with its own survey
data. The item is a provisional sum.
c) Regular topographical survey shall be included as part of Quality control, such as
setting, coordinates and layout of various works during the progress of work and
matching of the station area track alignment with the alignment of the approaches
at station ends and incorporating the changes (if any).
d) The surveying and staking shall be performed in accordance with these
Specifications to obtain close conformance with the design Track alignment and
details indicated on the plans or established by the Engineer.
e) The Contractor shall be responsible for the supervision of the surveying personnel.
Any errors resulting from the operations of the surveying personnel shall be
corrected at the Contractor‘s expense.
f) The Contractor shall at his own expense make any additional surveys and
measurements that are required for the construction of the work such as levels at
road junction, gates, private property boundaries, buildings top levels,… The
Contractor shall be responsible for the accuracy of all surveys or measurements
made by his employees.
g) The survey work involves establishment of control points, triangulation points
benchmarks, grid layout for all the piers and other structures maintaining
horizontal and vertical control within the permissible limits, incorporating changes
(if any), submission of full data in the tabulation form and survey drawings. All
traverse stations and benchmarks set shall be sufficiently protected from
disturbance. These points shall be regarded as semi-permanent, having the
potential of being utilized during the construction phase of the Contract. GPS
equipment may be used for the horizontal control at the option of the Contractor
with the required accuracy being maintained.
h) All control surveys shall be co-ordinated with interfacing parties. Control traverse
and level data shall be provided to the Engineer both in hard copy and in soft
copy.
i) The Contractor shall traverse for horizontal and vertical control for bridges and
viaducts. An offset line shall be set for pier control. Points shall be established at
changes in curvature. The TS (tangent to spiral) and ST (spiral to tangent) offset
points shall control the tangent sections. The Contractor shall not set intermediate
points along the tangent portion of alignment, other than from the TS and ST
offsets.
j) The Contractor shall identify the Point Kilometric and offset distance to right and
left of edge of the Site at each third pier and shall permanently anchor a brass or
stainless steel plate into said third pier. The plate shall be 2 meters from ground

level and shall be 25cm square and a minimum of 4 mm in thickness. A sketch of
the method of affixing these plates shall be submitted to the Engineer for
statement of no objection. After the concrete curing period, these plates shall be
marked with pier number, Point Kilometric and offset distance right and left to the
edge of the Site. Point Kilometric shall be identified to the closest meter and
offsets rounded off to 10 centimetres. The purpose of the plates is to enable the
Employer to easily set out the boundaries of the Site at any time in the future.
1.6 GEOTECHNICAL INVESTIGATIONS
a) During the construction stage, additional boreholes can be required by the
Contractor in the following cases:
- The geotechnical conditions between the geotechnical model and those
observed during the drilling operations of the pile are different and this
difference impacts a lot the design of the pile (length and diameter of pile). The
construction contractor shall demonstrate by calculation this impact in order
that the Engineer and the Client can review and approve the necessity to
update the pile design.
- The drilling machine cannot drill the soil due to the presence of unforeseen
obstacle (big stone, existing foundations…)
b) The Contractor shall establish a site store for all soil samples. Each sample shall
be given a unique number. Samples shall not be disposed of unless ordered by
the Engineer.
c) The Contractor shall employ a Geologist or Soils Engineer and shall provide an
interpretive full report of all investigations and test results to the Engineer.
d) The Contractor shall carry out a limited soil investigation to ensure that the design
depth of the bearing strata for specific foundations is reached.
e) Prior to commencing the soil investigation the Contractor shall submit a scheme of
the works for the approval of the Engineer
f) The minimum requirements of the soil investigation for bridge foundations shall be
as follows:
Depth of borehole shall be sufficient for investigating the soil 6 m
under the pile tip at least
Bores to be 100mm diameter
Standard Penetration Test (SPT) and soil samples to be taken at 50
cm intervals
Undisturbed samples with sampler adapted to the soil encountered.
Bore-holes are to be filled with cement grout to the approval of the
Engineer
g) Upon completion of the soil investigation the Contractor shall submit a fully
detailed report, including all test results, to the Engineer for his consideration.
Measurement and Payment for Geotechnical and Topographical Investigation

Measurement
a. Topographical survey: only additional survey for reference points, control points,
triangulation points, bench marks, grid layout serving operation survey in detail the
construction items during construction period shall be measured for payment. As
survey works for the structures in detail to ensure the construction compliance with
the design shall be deemed the contractor‘s responsibility to complete the work
and shall be included in the unit price of corresponding items.
b. Geotechnical investigation: only additional Geotechnical investigation as
requested and agreed by the Engineer shall be measured for payment.
c. Measurement shall be in conformity with the approved ―Geotechnical and
Topographical investigation plan‖ and basing on the actual quantity accepted.
Payment
a. A Provisional Sum is designated in the Contract for Geotechnical and
Topographical investigation for the Contractor.
b. The work, measured as specified above, where applicable will be valued in
accordance with Clauses of the General Conditions and Particular Conditions of
Contract and payment will be provided from the Provisional Sum.
01300 Geotechnical and Topographical Investigation Provisional sum
1.7 TRAFFIC MANAGEMENT PLAN
1.7.1 General
a) The Contractor shall make all arrangements and assume full responsibility for
transportation to the Site of all plant, equipment, materials and supplies needed for
the proper Execution of the Works. Procedures for access to and from the Site
shall be co-ordinated with the Relevant Authorities.
b) The Contractor shall use such routes and rights of entry to the Site as may be
decided by the Employer from time to time. Routes for 'very large' or 'very heavy'
loads shall be discussed with the Employer in advance and all arrangements
thereafter shall be submitted to the Employer. In this context, the definition of the
terms "very large" and "very heavy" refer to articles that cannot be transported by
normal road vehicles or be handled by readily available methods. Where doubt
exists, it shall be the responsibility of the Contractor to notify and discuss the
nature of the load in question with the Employer.
c) The Contractor shall be responsible for obtaining permission from the Traffic
Police and other Relevant Authorities for any transportation activities including
movement of ―very large‖ and ―very heavy‖ loads and for arranging police escorts
if required. The Contractor shall ensure that all roads and pavements, etc.,
leading to and around the Site are kept free from obstructions and shall not cause

inconvenience or hindrance to traffic or persons either by its vehicle or its
workmen, scaffolding, plant, materials, equipment, etc. All workmen working on
the road shall wear approved reflective safety vests at all times.
d) The Contractor shall comply with all the applicable requirements of the Motor
Vehicle Act – 1988 and all other applicable laws. The Contractor shall ensure
compliance with the requirements regarding the licensing of drivers and the
registration of vehicles. Vehicle size and load limitations shall be in accordance
with all statutory requirements.
e) The Contractor shall ensure that the maximum permissible axle load is not
reached on existing structures (bridges, culvert...) along the transportation route. If
required, the Contractor shall verify the design of the existing structure and/or
investigate consolidation of the existing structure with Temporary Work. These
documents shall be submitted to the Employer for approval prior to submission to
Relevant Authorities.
f) The Contractor shall repair damage caused to roads, footpaths, steps, cables,
sewers, drains, etc., and shall reinstate the same at his own expense to the
satisfaction of the Relevant Authorities and shall indemnify the Employer.
g) Before undertaking any transportation, making any arrangements for the same,
the Contractor shall submit to the Engineer for its review, check, design
verification and will report to the Employer for approval, a detailed transportation
plan addressing all the relevant aspects.
h) The Contractor shall keep open to traffic existing roads during the performance of
the Works, provided that when approved by the Engineer the Contractor may
bypass traffic over a detour. The Contractor shall at all time keep roads and
footpaths, affected by his operations, free from soil and material spillage.
i) The Contractor shall keep the length of the project construction areas in such
condition that traffic will be accommodated safely. Traffic control devices and
services shall be provided and maintained both inside and outside the project
limits as needed to facilitate traffic guidance should this be necessary.
j) Prior to the start of construction operations, the Contractor shall erect such signs,
barricades, and other traffic control devices as may be required by the plans,
specifications or directed by the Engineer. Traffic control devices shall be operated
only when they are needed and only those devices that apply to conditions
actually in existence shall be operable.
k) Temporary fence shall be placed to provide a visual barrier between the work area
and adjacent traffic or buildings and at locations directed by the Engineer.
l) Any devices provided under this Clause that are lost, stolen, destroyed, or deemed
unacceptable while their use is required on the project shall be replaced by the
Contractor without additional compensation.
m) During non-working hours and following completion of a particular construction
operation, all warning signs, except those necessary for the safety of the public,

Chapter ii 2 technical requirements(specification) for metro

Chapter ii 2 technical requirements(specification) for metro

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Chapter ii 2 technical requirements(specification) for metro