1st DRAFT (Rev B) Including comments from CEDD, WSD, HyD & DSD and Steering Committtee

General Specification for Civil Engineering Works (GS), 2006 Edition Guidance Notes This electronic file is for reference only. When the content of this electronic file is inconsistent with the hard copy of the Guidance Notes for GS, 2006 Edition and the Amendments issued, the hard copy of the Guidance Notes for GS, 2006 Edition and the Amendments shall prevail.

(This Version is Continuously Updated to include Amendments issued)This Electronic File has incorporated the following Amendments:-

Rev First Issue 1 2 3

Issue Date 18 September 2008 6 February 2009 26 August 2009 26 November 2009

Amendment Incorporated Amendment No. 1/2009 Amendment No. 2/2009 Amendment No. 3/2009

GENERAL SPECIFICATION FOR CIVIL ENGINEERING WORKS2006 Edition

GUIDANCE NOTES

The Government of the Hong Kong Special Administrative Region

2006 Edition

The Government of the Hong Kong Special Administrative Region The 1992 Edition was first printed in April 1993 Second Reprint, November 1998 Third Reprint, December 1999 Fourth Reprint, November 2001 The 2006 Edition was printed in July 2008.

Prepared by: Quality Management and Standards Unit, Civil Engineering and Development Department, Civil Engineering and Development Building, 101, Princess Margaret Road, Homantin, Kowloon, Hong Kong. Members of Steering Committee for the General Specification for Civil Engineering Works: Assistant Director (Technical), Chairman Chief Geotechnical Engineer/LPM3 Chief Highway Engineer/R & D Technical Secretary, NTE DevO Chief Engineer/Land Works Technical Secretary 1 Chief Civil Engineer Chief Engineer/Design Senior Engineer/Quality Management and Standards, Secretary CEDD CEDD HyD CEDD CEDD DSD HD WSD CEDD

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FOREWORDThe Guidance Notes (GN) on the General Specification for Civil Engineering Works (GS), 1992 Edition have been updated to cope with the 2006 Edition of the GS with the updated text printed in green colour for easy reference. Each section of the GN was updated by a works department with the appropriate expertise and background knowledge. The overall coordination of the GN and its final production was carried out by the Quality Management and Standards Unit of the Civil Engineering and Development Department. The GN have been endorsed by the Steering Committee for the General Specification for Civil Engineering Works for promulgation.

June 2008

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INTRODUCTIONThe Guidance Notes are to be read in conjunction with the General Specification for Civil Engineering Works (GS), 2006 Edition. For ease of cross-referencing, the number of the GS Clause, and where appropriate, the sub-clause to which the guidance note applies, is quoted in the first column. These are also quoted in the text. Abbreviations used in the Guidance Notes in general follow Clause 1.02 of the GS, and definitions of the words and expressions contained in Clause 1 of the General Conditions of Contract for Civil Engineering Works, 1999 Edition. The Guidance Notes are restricted to internal use within the Government departments and are intended to give guidance on application of the provisions of the GS during the design and site supervision stages. Application of the GN is not mandatory and project officers should ensure suitability for use in each individual case.

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GUIDANCE NOTES ON THE GENERAL SPECIFICATION FOR CIVIL ENGINEERING WORKS, 2006 EditionCONTENTSSECTION1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 GENERAL SITE CLEARANCE LANDSCAPE SOFTWORKS AND ESTABLISHMENT WORKS FENCING DRAINAGE WORKS EARTHWORKS GEOTECHNICAL WORKS PILING WORKS CARRIAGEWAYS: SUB-BASE MATERIAL AND BITUMINOUS MATERIALS CONCRETE CARRIAGEWAYS MISCELLANEOUS ROADWORKS TRAFFIC SIGNS, ROAD MARKINGS AND ROAD STUDS WORK FOR ELECTRICAL AND MECHANICAL INSTALLATIONS FORMWORK AND FINISHES TO CONCRETE STEEL REINFORCEMENT CONCRETE AND JOINTS IN CONCRETE PRESTRESSING STEELWORK HANDRAILING, LADDERS, STAIRS AND FLOORING BRIDGEWORKS MARINE WORKS WATER SUPPLY PIPEWORKS WATER RETAINING STRUCTURES BUILDING WORKS ENVIRONMENTAL PROTECTION PRESERVATION AND PROTECTION OF TREES

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CONTENTS

SECTION 1 GENERALPage No.

INTERPRETATION OF DOCUMENTS1.01 1.02 1.03 1.04 1.05 1.06 1.07 Application of the General Specification for Civil Engineering Works ................. Abbreviations ............................................................................................................. Glossary of Terms ...................................................................................................... Trials and Approval ................................................................................................... British Standards, Codes of Practice, and Other Standards ..................................... Specifications in Metric and Imperial Units ............................................................ Dimensions from Drawings ...................................................................................... 1.3 1.3 1.3 1.4 1.4 1.5 1.5

PROGRAMME1.08 Programme ................................................................................................................. 1.6

CONTRACTORS SUPERINTENDENCE1.11 1.12 Supervision of Piling Works ................................................................................... 1.6 Particulars of Agent and Employees ......................................................................... 1.6

CONSTRUCTION SAFETY AND SAFETY OF THE PUBLIC(Amd 1/2009)

1.13

Construction Safety and Safety of the Public (Amd 1/2009)

.............................................. 1.7

WORK ON ROADS1.14 1.15 1.17 1.18 1.19 Approval for Temporary Traffic Arrangements and Control .................................. Temporary Traffic Arrangements and Control ......................................................... Use of Roads and Footways ...................................................................................... Work on Roads and Footways .................................................................................. Reinstatement of Roads and Footways .................................................................... 1.7 1.7 1.7 1.8 1.8

CARE OF THE WORKS1.22 Protection of Works ................................................................................................... 1.86

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DAMAGE AND INTERFERENCE1.23 1.24 Damage and Interference ........................................................................................... 1.8 Watercourses and Drainage Systems ......................................................................... 1.8

RECORDS1.28 Records of Wage Rates .............................................................................................. 1.9

LIAISON WITH OTHERS1.31 Liaison with Others .................................................................................................... 1.9

SITE CLEANLINESS1.32 1.33 1.34 Site Cleanliness ........................................................................................................ 1.10 Prevention of Mosquito Breeding ........................................................................... 1.10 Prevention of Dust .................................................................................................... 1.10

MATERIALS AND EQUIPMENT1.35 Materials and Equipment Provided by the Employer ............................................ 1.10

TESTING1.39 1.40 Samples for Testing .................................................................................................. 1.11 Testing ....................................................................................................................... 1.11

SITE ESTABLISHMENT1.45 1.46 1.48 1.49 1.50 1.52 1.53 Use of the Site .......................................................................................................... Submission of Particulars ........................................................................................ Fences and Signs on the Site ................................................................................... The Engineers Site Accommodation ...................................................................... The Contractors Site Accommodation ................................................................... Transport for the Engineer ....................................................................................... Clearance of the Site ................................................................................................ 1.12 1.12 1.12 1.13 1.13 1.13 1.14

MEETINGS1.54 Meetings ................................................................................................................... 1.147

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PHOTOGRAPHS1.55 Photographs ............................................................................................................. 1.14

SECTION 2 SITE CLEARANCESITE CLEARANCE2.04 2.05 2.06 2.08 Demolition ................................................................................................................. Pipes and Cables ........................................................................................................ Trees ........................................................................................................................... Materials and Equipment for Re-use and Storage ................................................... 2.3 2.3 2.3 2.4

SECTION 3 LANDSCAPE SOFTWORKS AND ESTABLISHMENT WORKSGENERAL AND GLOSSARY OF TERMS3.01 to 3.10 General Requirements ............................................................................................... 3.3 Establishment Works ................................................................................................. 3.3

MATERIALS3.12 3.13 to 3.16 3.17 & 3.18 3.19 3.20 & 3.21 3.22 3.23 3.24 3.25 Whip Trees ................................................................................................................. Light Standard Trees ................................................................................................. Semi-mature Trees ..................................................................................................... Small Shrubs .............................................................................................................. Large Shrubs .............................................................................................................. Conifers ...................................................................................................................... Palms .......................................................................................................................... Bamboos .................................................................................................................... Herbaceous Plants ..................................................................................................... Ground Covers ........................................................................................................... Climbers ..................................................................................................................... Containerised Plants ..................................................................................................8

3.3 3.3 3.3 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4

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3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 3.36 3.37

Grass Seed .................................................................................................................. Turf ............................................................................................................................ Sprigs .......................................................................................................................... Plant Name ................................................................................................................. Soil-mix ...................................................................................................................... Soil Conditioner ......................................................................................................... Mulch .......................................................................................................................... Mulch for Hydroseeding ............................................................................................ Fertilizer........................................................................................................................ Soil Binder .................................................................................................................. Stakes, Ties and Guys .................................................................................................. Protective Fabric Material ........................................................................................

3.5 3.5 3.5 3.5 3.6 3.6 3.6 3.6 3.6 3.6 3.7 3.7

SUBMISSIONS3.38 to 3.40 Particulars of Seed Mixture, Turf, Sprigs, Soil Conditioner, Soil-mix and Water ............ 3.7 Samples of Materials .................................................................................................. 3.7

PRE-PLANTING WORKS3.49 3.50 3.51 3.53 3.54 Preparatory Works ...................................................................................................... Cleaning Ground ........................................................................................................ Ripping ....................................................................................................................... Soiling ......................................................................................................................... Cultivation .................................................................................................................. 3.7 3.8 3.8 3.8 3.8

PLANTING3.58 3.59 3.61 3.62 3.64 General ........................................................................................................................ Use of Excavated Material ......................................................................................... Staking, Tying and Guying ........................................................................................ Mulching ..................................................................................................................... Pit Planting of Seedlings, Shrubs, Whips, Climbers, Ground Covers and Herbaceous Plants ...................................................................................................... 3.8 3.9 3.9 3.9 3.9

GRASSING3.69 & 3.70 3.71 3.72 3.73 3.74 3.76 3.77 Hydroseeding ........................................................................................................... Hydroseeding Cover ................................................................................................ Surface Conditions for Hydroseeding ..................................................................... Application of Hydroseeding ................................................................................... Protective Material ................................................................................................... Patching Up .............................................................................................................. Turfing ...................................................................................................................... Sprigging ..................................................................................................................9

3.10 3.10 3.10 3.11 3.11 3.11 3.12 3.12

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ESTABLISHMENT WORKS3.79 3.80 3.81 3.82 3.83 3.84 3.85 3.86 3.87 3.89 3.90 3.91 Establishment Works ............................................................................................... Inspection of Establishment Works ........................................................................ Replacement of Plants and Grass .......................................................................... Security of Stakes, Ties and Guys .......................................................................... Firming Up Plants ................................................................................................... Watering ................................................................................................................... Weeding ................................................................................................................... Pruning ..................................................................................................................... Grass Cutting ........................................................................................................... Post-planting Fertilizer ............................................................................................ Control of Pests, Fungi and Disease ....................................................................... Forking Over ............................................................................................................ 3.13 3.13 3.13 3.13 3.13 3.14 3.14 3.15 3.15 3.16 3.16 3.16

TESTING: GRASS COVER3.94 Testing: Grass Cover ............................................................................................... 3.16

TREE TRANSPLANTING3.97 Transplanting of Existing Trees .............................................................................. 3.17

APPENDIX 3-A BRITISH STANDARDS RELEVANT TO LANDSCAPE SOFTWORKS AND ESTABLISHMENT WORKS .................... 3.18

SECTION 4 FENCINGNOTE ...................................................................................................................... 4.3 MATERIALS4.12 4.14 Timber ........................................................................................................................ 4.3 Bolts, Nuts, Washers and Fittings ............................................................................. 4.3

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POSTS AND GATES FOR FENCING4.19 Gates .......................................................................................................................... 4.3

ERECTING FENCING4.23 & 4.24 4.25 Alignment of Fencing ................................................................................................ 4.4 Posts for Fencing ........................................................................................................ 4.4 Erecting Posts for Fencing ......................................................................................... 4.4

SECTION 5 DRAINAGE WORKSNOTE ...................................................................................................................... 5.3 MATERIALS5.11 5.13 5.15 5.17 5.18 5.19 5.20 5.22 5.25 5.28 5.29 5.30 5.33 5.35 Precast Concrete Pipes and Fittings .......................................................................... DI Pipes and Fittings .................................................................................................. uPVC Pipes and Fittings ............................................................................................ Bolts, Nuts and Washers ............................................................................................ Elastomeric Joint Rings ............................................................................................. Detachable Couplings and Flange Adapters ............................................................. Anticorrosion Tape ..................................................................................................... Aggregates for Granular Bed and Granular Fill ......................................................... Precast Concrete Manholes ....................................................................................... Manhole Covers, Gully Gratings and Kerb Overflow Weirs ................................... Penstocks .................................................................................................................... Gate Valves ................................................................................................................. Air Valves ................................................................................................................... Filling Abandoned Pipes and Manholes ................................................................... 5.3 5.3 5.3 5.4 5.4 5.4 5.4 5.4 5.5 5.5 5.5 5.5 5.5 5.5

SUBMISSIONS5.44 Particulars of Diversions of Flow .............................................................................. 5.6

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TRANSPORT, HANDLING AND STORAGE OF MATERIALS5.45 5.47 Transport, Handling and Storage of Pipes, Joints and Fittings ............................... 5.6 Storage of Pipes ......................................................................................................... 5.6

EXCAVATION5.52 Excavation ................................................................................................................. 5.6

LAYING AND BEDDING PIPES5.53 Laying Pipes .............................................................................................................. 5.7

JOINTING PIPES5.57 Flanged Joints ............................................................................................................ 5.7

THRUST AND ANCHOR BLOCKS5.66 Thrust and Anchor Blocks ......................................................................................... 5.7

BED, HAUNCH AND SURROUND5.67 5.68 Granular Bed .............................................................................................................. 5.8 Concrete Bed, Haunch and Surround ....................................................................... 5.8

TOLERANCES5.70 Tolerances: Pipelines for Drainage Works ............................................................... 5.8

CONNECTIONS5.71 Connections to Structures ......................................................................................... 5.9

MANHOLES, CHAMBERS, GULLIES AND CHANNELS5.73 Manholes, Chambers and Gullies ............................................................................. 5.9

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INSTALLATION OF PENSTOCKS AND VALVES5.76 Installation of Penstocks and Valves ......................................................................... 5.9

PIPES AND MANHOLES TO BE ABANDONED5.77 Pipes and Manholes to be Abandoned ...................................................................... 5.9

CLEANING OF PIPELINES5.78 Cleaning of Pipelines ............................................................................................... 5.10

TESTING: PIPES FOR DRAINAGE WORKS5.81 5.82 5.83 Batch: Pipes for Drainage Works ............................................................................ 5.10 Samples: Pipes for Drainage Works ........................................................................ 5.10 Testing: Pipes for Drainage Works .......................................................................... 5.10

TESTING: MANHOLE COVERS, GULLY GRATINGS AND KERB OVERFLOW WEIRS5.95 Testing: Covers, Gratings and Weirs ....................................................................... 5.10

TESTING: WATERTIGHTNESS OF PENSTOCKS5.99 Testing: Watertightness of Penstocks ...................................................................... 5.11

TESTING: GRAVITY PIPELINES FOR DRAINAGE WORKS5.102 5.103 Testing: Gravity Pipelines for Drainage Works ...................................................... 5.11 Compliance Criteria: Gravity Pipelines for Drainage Works ................................. 5.11

REPAIR OF PIPELINES AND CULVERTS BY INTERNAL LINING5.108 5.113 General ...................................................................................................................... 5.12 Performance Tests on Internal Lining Material ...................................................... 5.12

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APPENDIX 5.4 TESTS ON GRAVITY PIPELINES FOR DRAINAGE WORKS5.4.7 Procedure: Infiltration Test ...................................................................................... 5.12

SECTION 6 EARTHWORKSNOTE ...................................................................................................................... 6.3 GLOSSARY OF TERMS6.04 6.07 6.08 Earthworks Final Surface .......................................................................................... 6.3 Formation ................................................................................................................... 6.3 Intermediate Areas of Fill .......................................................................................... 6.3

MATERIALS6.09 Fill Material ............................................................................................................... 6.4

GENERAL EARTHWORKS REQUIREMENTS6.12 6.13 6.16 6.17 6.18 Ownership of Earthworks Material .......................................................................... Temporary Works for Earthworks ............................................................................ Earthworks Material Allowed to Become Unsuitable or to Deteriorate ................. Additional Excavation and Stabilization .................................................................. Removal of Earthworks Material .............................................................................. 6.5 6.5 6.5 6.5 6.5

EXCAVATION6.19 6.20 6.21 6.24 Disposal of Excavated Material ................................................................................ Use of Excavated Material ........................................................................................ Obstructions in Excavations ..................................................................................... Excavations for Structures, Pits and Trenches ......................................................... 6.6 6.6 6.6 6.6

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BLASTING TRIALS6.25 to 6.29 Blasting Trials ............................................................................................................. 6.6 Changes in Blasting Procedure .................................................................................. 6.6

BLASTING6.30 to 6.37 Statutory Requirement for Blasting ........................................................................... 6.7 Controlled Blasting .................................................................................................... 6.7

DEPOSITION OF FILL MATERIAL6.38 6.39 6.40 6.41 6.43 6.45 Types of Fill Material ................................................................................................. Sources of Fill Material ............................................................................................. Surface Preparation for Fill Material ......................................................................... Commencement of Deposition of Fill Material ........................................................ Deposition of Fill Material ........................................................................................ Deposition of Fill Material Adjacent to Structures and Utilities .............................. 6.7 6.7 6.7 6.7 6.7 6.8

COMPACTION OF FILL MATERIAL6.48 Compaction of Fill Material ...................................................................................... 6.8

INTERMEDIATE AREAS OF FILL6.56 & 6.57 Deposition of Fill Material in Intermediate Areas of Fill ......................................... 6.8 Compaction of Fill Material in Intermediate Areas of Fill ....................................... 6.8

EARTHWORKS IN PUBLIC FILLING AREA6.58 Public Filling Area ..................................................................................................... 6.9

TOLERANCES6.68 Tolerances: Earthworks Final Surfaces and Formations .......................................... 6.9

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SECTION 7 GEOTECHNICAL WORKS

PART 1: GENERAL REQUIREMENTSPage No.

GENERAL7.01 7.06 7.07 General Requirements ............................................................................................... 7.3 Prestressed Ground Anchors ..................................................................................... 7.3 Reinforced Fill Structures ......................................................................................... 7.3

TRIALS7.08 Trials for Geotechnical Works .................................................................................. 7.3

PART 2: GROUND INVESTIGATION NOTE ...................................................................................................................... 7.4 GLOSSARY OF TERMS7.10 7.11 7.23 to 7.26 Bulk Sample ............................................................................................................... 7.4 Inspection Pit ............................................................................................................. 7.4 Definition of Rock, Boulders, Cobbles and Gravel ................................................. 7.4

DRILLING FOR GROUND INVESTIGATION7.43 7.44 7.45 Drilling Rigs for Ground Investigation .................................................................... 7.4 Drilling Equipment for Ground Investigation .......................................................... 7.5 Drilling for Ground Investigation ............................................................................. 7.5

SAMPLING FOR GROUND INVESTIGATION7.53 Supply of Equipment and Containers ....................................................................... 7.5

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IN-SITU TESTING7.69 7.71 7.72 7.74 Dynamic Probe Tests ................................................................................................. In-situ Density Tests ................................................................................................... Falling or Rising Head Permeability Tests ................................................................ Constant Head Permeability Tests ............................................................................. 7.6 7.6 7.6 7.6

PART 3: SLOPE TREATMENT WORKS MATERIALS7.86 7.88 7.90 7.92 7.96 Soil-cement ................................................................................................................. Reinforcement for Sprayed Concrete ........................................................................ Rock Bolts .................................................................................................................. Rock Dowels .............................................................................................................. Grout for Soil Nails .................................................................................................... 7.7 7.7 7.7 7.7 7.8

SUBMISSIONS7.101 7.104 Particulars of Sprayed Concrete ................................................................................ 7.8 Soil Nails .................................................................................................................... 7.8

PRELIMINARY WORK7.107 7.108 7.109 Access to Slopes ......................................................................................................... 7.8 Protection Fences and Barriers .................................................................................. 7.8 Preparation for Slope Treatment Works .................................................................... 7.9

ROCK SLOPE TREATMENT WORKS7.113 Sealing and Infilling of Rock Joints .......................................................................... 7.9

SPRAYED CONCRETE7.117 7.118 7.123 Trial Panel ................................................................................................................... 7.9 Preparation of Slope Surfaces .................................................................................... 7.9 Curing Spraying Concrete ....................................................................................... 7.10

PROTECTIVE MESH FOR SLOPES7.126 Fixing Protective Mesh for Slopes .......................................................................... 7.1017

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ROCK BOLTS7.127 7.128 Trials for Rock Bolts ............................................................................................... 7.10 Drilling, Preparing and Testing Rock Bolt Holes .................................................. 7.10

SOIL NAILS7.136 7.137 7.138 7.139 Drilling for Soil Nails .............................................................................................. Installation and Grouting of Soil Nails ................................................................. Pull-out Tests for Soil Nails .................................................................................... Soil-nail Head .......................................................................................................... 7.11 7.11 7.12 7.12

TESTING: OPTIMUM MOISTURE CONTENT AND MAXIMUM DRY DENSITY OF SOIL-CEMENT FILL7.146 Compliance Criteria: Concrete Cores from Sprayed Concrete ............................. 7.12

TESTING: PACKER TESTS ON DRILLHOLES FOR ROCK BOLTS7.148 Testing: Packer Test ................................................................................................. 7.13

TESTING: ROCK BOLTS7.152 Compliance Criteria: Rock Bolts ............................................................................ 7.13

PART 4: GROUTING FOR GEOTECHNICAL WORKS GLOSSARY OF TERMS7.156 Grouting ................................................................................................................... 7.14

MATERIALS7.160 7.161 7.162 7.163 Grout for Geotechnical Works ................................................................................ Standpipes ................................................................................................................ Particulars of Grouting for Geotechnical Works .................................................... Trials for Grouting ................................................................................................... 7.14 7.14 7.14 7.14

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DRILLING FOR GROUTING FOR GEOTECHNICAL WORKS7.164 Drilling for Grouting for Geotechnical Works ........................................................ 7.15

GROUTING FOR GEOTECHNICAL WORKS7.167 7.168 7.169 Grouting Equipment ................................................................................................. 7.15 Mixing Grout ............................................................................................................ 7.15 Pressure Grouting ..................................................................................................... 7.15

TESTING: GROUT - BLEEDING7.175 Testing: Bleeding of Grout ...................................................................................... 7.15

TESTING: GROUT - FLOW CONE EFFLUX TIME7.178 Testing: Flow Cone Efflux Time of Grout .............................................................. 7.16

TESTING: GROUT - CRUSHING STRENGTH7.181 Testing: Crushing Strength of Grout ....................................................................... 7.16

TESTING: PACKER TESTS ON DRILLHOLES FOR GROUTING AND GROUTED DRILLHOLES7.183 Testing: Packer Tests ................................................................................................ 7.16

PART 5: GROUNDWATER DRAINAGE AND CONTROL GLOSSARY OF TERMS7.191 7.192 7.193 7.195 7.196 7.197 7.198 7.199 Prefabricated Band Drain ......................................................................................... Raking Drain ............................................................................................................ Relief Drain .............................................................................................................. Granular Filter Material ........................................................................................... Geotextile Filter ........................................................................................................ Filter Pipes ................................................................................................................ Raking Drains ........................................................................................................... Relief Drains ............................................................................................................. 7.17 7.17 7.17 7.17 7.17 7.18 7.18 7.18

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7.200 7.202

Fill Material for Trench Drains ............................................................................... 7.19 Prefabricated Band Drains ...................................................................................... 7.19

SUBMISSIONS7.204 7.206 7.212 Particulars of Geotextile Filter ................................................................................ 7.19 Particulars of Raking Drains ................................................................................... 7.19 Samples of Materials ............................................................................................... 7.19

GEOTEXTILE FILTER7.219 7.222 Damage to Geotextile Filter .................................................................................... 7.19 Records of Geotextile Filter .................................................................................... 7.20

RAKING DRAINS7.223 Installation of Raking Drains .................................................................................. 7.20

TRENCH DRAINS7.229 Deposition and Compaction of Fill Material for Trench Drains ........................... 7.20

CAISSON DRAINS7.233 Discharge of Water from Caisson Drains ............................................................... 7.20

PREFABRICATED BAND DRAINS7.235 Installation of Prefabricated Band Drains .............................................................. 7.20

GROUNDWATER CONTROL AND DRAWDOWN7.239 Monitoring of Groundwater Control and Drawdown ............................................ 7.20

TESTING: GRANULAR FILTER MATERIAL7.243 Testing: Granular Filter Material ............................................................................ 7.21

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TESTING: FILL MATERIAL FOR TRENCH DRAINS7.247 Testing: Fill Material for Trench Drains ................................................................. 7.21

PART 6: GEOTECHNICAL INSTRUMENTATION GENERAL GEOTECHNICAL INSTRUMENTATION REQUIREMENTS7.254 7.255 7.256 Instruments for Geotechnical Instrumentation ....................................................... 7.22 Location and Arrangement of Instruments ............................................................. 7.22 Installation of Instruments ....................................................................................... 7.22

MONITORING AND RECORDING7.260 Recording Readings ................................................................................................. 7.22

SETTLEMENT PLATES7.261 Installation of Settlement Plates .............................................................................. 7.23

TILTMETER SYSTEM7.262 Installation of Tiltmeter System .............................................................................. 7.23

STANDPIPE PIEZOMETERS7.264 7.265 Standpipe Piezometers ............................................................................................. 7.23 Installation of Standpipe Piezometers ..................................................................... 7.23

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SECTION 8 PILING WORKSPage No.

GENERAL8.01 General Requirements ............................................................................................... 8.3

SURFACE TREATMENT OF STEEL PILES8.25 Epoxy Coatings to Steel Piles ................................................................................... 8.4

GENERAL PILING WORKS REQUIREMENTS8.37 8.40 8.41 Monitoring of Noise, Vibration, Ground Movement and Groundwater Level ...... 8.4 Pre-drilling for Piles Founded on Rock .................................................................... 8.4 Founding Levels ........................................................................................................ 8.5

PRELIMINARY PILES8.42 Preliminary Piles ........................................................................................................ 8.5

DRIVEN PILES8.43 8.44 8.52 Supports for Driving Piles ......................................................................................... 8.6 Use of Diesel Hammer .............................................................................................. 8.6 Measurement of Set of Driven Piles ......................................................................... 8.6

HAND-DUG CAISSONS8.54 Excavation for Hand-dug Caissons .......................................................................... 8.7

BARRETTES8.56 Excavation for Barrettes ............................................................................................ 8.7

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CONSTRUCTION USING BENTONITE SLURRY8.59 Excavation using Bentonite Slurry ............................................................................ 8.7

FIXING REINFORCEMENT FOR PILES8.63 Fixing Reinforcement for Piles ................................................................................. 8.8

PLACING CONCRETE IN PILES8.66 Placing Concrete in Piles ........................................................................................... 8.8

INSPECTION OF PILING WORKS8.69 Inspection of Excavations for Piles ........................................................................... 8.9

RECORDS OF PILING WORKS8.81 Record of Piling Works .............................................................................................. 8.9

TESTING: LOAD TESTS ON PILES8.82 Testing: Load Tests on Piles ...................................................................................... 8.9

TESTING: INTEGRITY TESTS8.92 8.94 Testing: Integrity Tests on Piles and Non-destructive Integrity Testing ................ 8.11 Sonic Tests on Bored Cast-in-situ Piles .................................................................. 8.12

TESTING: BENTONITE SLURRY8.96 Testing: Bentonite Slurry ......................................................................................... 8.12

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SECTION 9 CARRIAGEWAYS: SUB-BASE MATERIAL AND BITUMINOUS MATERIALSPage No.

MATERIALS9.02 9.04 9.05 9.06 9.07 9.08 Sub-base Material Using Virgin Material................................................................... Aggregates for Bituminous Materials ...................................................................... Filler for Bituminous Materials ................................................................................ Bitumen ...................................................................................................................... Bituminous Emulsion ................................................................................................ Bituminous Priming Material ................................................................................... 9.3 9.3 9.3 9.4 9.4 9.4

DESIGN OF SUB-BASE MATERIAL AND BITUMINOUS MATERIALS9.09 9.10 Design Procedure for Sub-base Material and Bituminous Materials ...................... 9.4 Design of Bituminous Materials ............................................................................... 9.5

SUBMISSIONS9.11 9.12 9.15 Particulars of Filler and Bitumen for Bituminous Materials ................................... 9.6 Particulars of Mixes for Sub-base Material and Bituminous Materials .................. 9.6 Particulars of Methods of Laying and Compacting Sub-bases and Bituminous Materials .................................................................................................................... 9.6

TRIALS9.17 9.18 9.20 9.21 9.22 9.23 9.24 Trial Areas .................................................................................................................. Samples: Trial Areas .................................................................................................. Compliance Criteria: Trial Areas .............................................................................. Non-compliance: Trial Areas .................................................................................... Approved Mix for Bituminous Materials other than Bituminous Roadbase Material ...................................................................................................................... Commencement of Placing Bituminous Materials .................................................. Changes in Materials and Methods of Construction ................................................ 9.7 9.7 9.7 9.7 9.8 9.8 9.8

HANDLING, STORAGE AND TRANSPORT OF MATERIALS9.25 9.26 Handling and Storage of Sub-base Material and Bituminous Materials ................ 9.8 Transport of Sub-base Material and Bituminous Materials ..................................... 9.9

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MIXING OF SUB-BASE MATERIAL AND BITUMINOUS MATERIALS9.27 9.28 9.29 Mixing of Sub-base Material and Bituminous Materials ......................................... 9.9 Mixing Plant for Bituminous Materials .................................................................... 9.9 Mixing Bituminous Materials .................................................................................... 9.9

LAYING AND COMPACTION OF BITUMINOUS MATERIALS9.33 9.34 9.35 9.37 Laying and Compaction of Bituminous Materials ................................................... 9.9 Laying Bituminous Materials by Paving Machine ................................................. 9.10 Laying Bituminous Materials by Manual Methods ................................................ 9.11 Joints in Bituminous Materials ................................................................................ 9.11

PROTECTION OF SURFACES OF SUB-BASE MATERIAL AND BITUMINOUS MATERIALS9.38 Protection of Surfaces of Sub-base Material and Bituminous Materials .............. 9.11

TOLERANCES9.40 Tolerances: Level of Carriageway ........................................................................... 9.11

TESTING: SURFACE REGULARITY9.42 Testing: Surface Regularity ..................................................................................... 9.12

TESTING: SUB-BASE MATERIAL9.45 9.46 Samples: Sub-base Material .................................................................................... 9.12 Testing: Sub-base Material Using Virgin Material ................................................. 9.12

TESTING: RELATIVE COMPACTION OF SUB-BASE9.48 Testing: Relative Compaction of Sub-base ............................................................. 9.12

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TESTING: AGGREGATES, FILLER AND BITUMEN FOR BITUMINOUS MATERIALS9.52 9.53 Samples: Aggregates, Filler and Bitumen for Bituminous Materials ................... 9.13 Testing: Aggregates, Filler and Bitumen for Bituminous Materials ..................... 9.13

TESTING: BITUMINOUS MATERIALS OTHER THAN BITUMINOUS FRICTION COURSE MATERIAL9.55 9.56 9.57 Samples: Bituminous Materials other than Bituminous Friction Course Material ....................................................................................................... 9.13 Testing: Bituminous Materials other than Bituminous Friction Course Material ....................................................................................................... 9.13 Compliance Criteria: Bituminous Materials other than Bituminous Friction Course Material ......................................................................................... 9.14

TESTING: BITUMINOUS FRICTION COURSE MATERIAL9.59 9.60 9.61 Samples: Bituminous Friction Course Material ..................................................... 9.14 Testing: Bituminous Friction Course Material ....................................................... 9.14 Compliance Criteria: Bituminous Friction Course Material ................................. 9.14

TESTING: BITUMINOUS MATERIAL CORES9.62 9.63 9.65 Samples: Bituminous Material Cores ..................................................................... 9.14 Testing: Bituminous Material Cores ....................................................................... 9.15 Non-compliance: Bituminous Material Cores ....................................................... 9.15

APPENDIX 9-A LAYER THICKNESS .................................................................................. 9.16 APPENDIX 9-B COMPLIANCE CRITERIA .................................................................... 9.17 APPENDIX 9-C RECTIFICATION ......................................................................................... 9.19

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SECTION 10 CONCRETE CARRIAGEWAYSPage No.

MATERIALS10.09 10.12 Fine Aggregates ........................................................................................................ 10.3 Joint Sealant .............................................................................................................. 10.3

TRIALS10.23 10.24 10.25 10.26 Trial Length .............................................................................................................. Testing: Trial Length ................................................................................................ Compliance Criteria: Trial Length .......................................................................... Non-compliance: Trial Length ................................................................................ 10.3 10.4 10.4 10.4

FORMING JOINTS10.34 10.36 10.37 10.38 10.40 Forming Joints .......................................................................................................... Longitudinal Joints ................................................................................................... Isolation Joints .......................................................................................................... Forming Grooves ..................................................................................................... Sealing Joints ............................................................................................................ 10.5 10.5 10.5 10.5 10.5

PLACING AND COMPACTING CONCRETE10.41 Placing and Compacting Concrete .......................................................................... 10.6

CONSTRUCTION JOINTS10.42 Construction Joints ................................................................................................... 10.6

SURFACE FINISH10.44 Surface Texturing ..................................................................................................... 10.6

CURING CONCRETE10.45 Curing Concrete ....................................................................................................... 10.6

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PROTECTION OF CONCRETE CARRIAGEWAY10.46 Protection of Concrete Carriageway ....................................................................... 10.7

TOLERANCES10.50 10.53 10.54 Tolerances: Dowel Bars and Tie Bars .................................................................... 10.7 Tolerances: Alignment of Concrete Carriageway .................................................. 10.7 Tolerances: Level of Concrete Carriageway ........................................................ 10.7

TESTING: SURFACE REGULARITY10.55 10.56 Testing: Surface Regularity ..................................................................................... 10.8 Compliance Criteria: Surface Regularity ............................................................... 10.8

TESTING: TEXTURE DEPTH10.58 Compliance Criteria: Texture Depth ....................................................................... 10.8

TESTING: CONCRETE CORES FROM TRIAL LENGTHS10.62 Samples: Concrete Cores from Trial Lengths ........................................................ 10.8

SECTION 11 MISCELLANEOUS ROADWORKSPART 1: GENERAL REQUIREMENTS MATERIALS11.09 Cement Mortar ......................................................................................................... 11.3

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PART 2: CONCRETE PROFILE BARRIERS MATERIALS11.11 Concrete Mix ............................................................................................................ 11.4

SUBMISSIONS11.12 Particulars of Concrete Profile Barriers .................................................................. 11.4

PART 3: PEDESTRIAN GUARD-RAILING GENERAL11.27 Design of Pedestrian Guard-railing ......................................................................... 11.5

PART 4: UNTENSIONED BEAM BARRIERS MATERIALS11.39 11.40 Beams ....................................................................................................................... 11.6 Posts .......................................................................................................................... 11.6

CONSTRUCTION OF UNTENSIONED BEAM BARRIERS11.47 11.49 Installation of Untensioned Beam Barriers ............................................................. 11.6 Concrete Footings .................................................................................................... 11.7

PART 5: KERBS, EDGINGS AND QUADRANTS MATERIALS11.52 Granite Kerbs, Edgings and Quadrants ................................................................... 11.9

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PART 6: FOOTWAYS, CYCLETRACKS AND PAVED AREAS CONSTRUCTION OF FOOTWAYS, CYCLETRACKS AND PAVED AREAS11.57 In-situ Concrete Footways, Cycletracks and Paved Areas .................................. 11.10

PART 7: PRECAST CONCRETE UNITS FOR PAVING GLOSSARY OF TERMS11.60 Unit .......................................................................................................................... 11.11

MATERIALS11.67 Sand ......................................................................................................................... 11.11

LAYING UNITS11.74 Laying Units ........................................................................................................... 11.11

REINSTATEMENT OF UNITS11.80 Reinstatement of Units .......................................................................................... 11.12

APPENDIX 11.1 DETERMINATION OF CHARACTERISTIC COMPRESSIVE STRENGTH OF INTERLOCKING BLOCKS11.1.4 Calculation ............................................................................................................. 11.13

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SECTION 12

TRAFFIC SIGNS, ROAD MARKINGS AND ROAD STUDSPage No.

PART 1: TRAFFIC SIGNS FABRICATION OF TRAFFIC SIGNS12.10 12.13 Posts for Traffic Signs .............................................................................................. 12.3 Faces for Traffic Signs ............................................................................................. 12.3

CONSTRUCTION AND ASSEMBLY OF TRAFFIC SIGNS12.18 Construction and Assembly of Traffic Signs .......................................................... 12.3

PART 2: ROAD MARKINGS GLOSSARY OF TERMS12.22 Road Markings ......................................................................................................... 12.4

MATERIALS12.23 12.24 Hot Applied Thermoplastic Material ....................................................................... 12.4 Cold Applied Preformed Material ........................................................................... 12.4

LAYING ROAD MARKINGS12.33 12.36 12.39 Preparation of Surfaces ............................................................................................ 12.5 Use of Road Marking Paint ..................................................................................... 12.5 Skid Resistance Level .............................................................................................. 12.5

REMOVING ROAD MARKINGS12.41 Shot-blasting Machine ............................................................................................. 12.5

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PART 3: ROAD STUDS MATERIALS12.42 Road Studs ............................................................................................................... 12.6

SECTION 13 WORK FOR ELECTRICAL AND MECHANICAL INSTALLATIONSELECTRICAL EARTHING SYSTEMS13.22 Electrical Earthing Systems .................................................................................... 13.3

GROUTING FOR ELECTRICAL AND MECHANICAL INSTALLATIONS13.23 Grouting for Electrical and Mechanical Installations ............................................ 13.3

COMPLETION AND PROTECTION OF WORK FOR ELECTRICAL AND MECHANICAL INSTALLATIONS13.24 Completion of Work for Electrical and Mechanical Installations ......................... 13.3

TOLERANCES13.26 Tolerances: Floors of Switchgear Rooms ............................................................... 13.3

INSPECTION OF WORK FOR ELECTRICAL AND MECHANICAL INSTALLATIONS13.28 Inspection of Work for Electrical and Mechanical Installations ........................... 13.4

TESTING: EARTHING CONTINUITY13.29 Testing: Earthing Continuity ................................................................................... 13.432

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TESTING: LOAD TESTS ON BEAMS AND JOISTS13.31 Testing: Load Tests on Beams and Joists ................................................................ 13.4

SECTION 14 FORMWORK AND FINISHES TO CONCRETENOTE .................................................................................................................... 14.3 MATERIALS14.14 14.16 Formwork ................................................................................................................. 14.3 Release Agents ......................................................................................................... 14.3

SUBMISSIONS14.21 Particulars of Formwork and Finishes to Concrete and Samples of Materials ....... 14.4

TRIAL PANELS14.22 14.25 Trial Panels ............................................................................................................... 14.4 Changes in Materials and Methods of Construction .............................................. 14.5

DESIGN AND CONSTRUCTION OF FALSEWORK AND FORMWORK14.28 14.29 14.32 Design and Construction of Falsework and Formwork ......................................... 14.5 Construction of Formwork ...................................................................................... 14.5 Built-in Components ................................................................................................ 14.6

APPLICATION OF RELEASE AGENTS14.33 Application of Release Agents ................................................................................ 14.6

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INSPECTION OF FORMWORK AND REINFORCEMENT14.34 Inspection of Formwork and Reinforcement ......................................................... 14.6

TREATED FINISHES14.38 14.39 14.41 Treated Finishes ....................................................................................................... 14.7 Class T1 Finish ........................................................................................................ 14.7 Class T4 Finish ........................................................................................................ 14.7

WORK ON CONCRETE SURFACES14.45 Remedial and Repair Work on Concrete Surfaces ................................................. 14.7

APPENDIX 14-ALATERAL PRESSURE FOR FORMWORK DESIGN ................ 14.8

APPENDIX 14-BSUMMARY OF ACI FORMULAE ON LATERAL PRESSURE FOR FORMWORK DESIGN ..................................... 14.10

SECTION 15 STEEL REINFORCEMENTMATERIALS15.03 15.04 15.05 15.06 15.08 15.10 Bar Reinforcement and Fabric Reinforcement ...................................................... Stainless Steel Reinforcement ................................................................................. Epoxy Coatings to Reinforcement .......................................................................... Hot Dip Galvanizing to Reinforcement .................................................................. Cover Spacers .......................................................................................................... Tying Wire ............................................................................................................... 15.3 15.3 15.3 15.3 15.4 15.5

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SUBMISSIONS15.12 15.14 Particulars of Bar Reinforcement and Fabric Reinforcement ................................ 15.5 Particulars of Galvanized Coatings to Reinforcement ........................................... 15.5

HANDLING AND STORAGE OF MATERIALS15.19 Storage of Reinforcement ........................................................................................ 15.5

CUTTING AND BENDING REINFORCEMENT15.20 Cutting and Bending Reinforcement ....................................................................... 15.5

SURFACE CONDITION OF REINFORCEMENT15.21 Surface Condition of Reinforcement ...................................................................... 15.6

FIXING REINFORCEMENT15.25 Welding of Reinforcement ....................................................................................... 15.6

TOLERANCES15.28 Tolerances: Reinforcement ...................................................................................... 15.6

INSPECTION OF REINFORCEMENT15.29 Inspection of Reinforcement ................................................................................... 15.7

APPENDIX 15-A STANDING COMMITTEE ON CONCRETE TECHNOLOGY - RUST GUIDE FOR STEEL REINFORCEMENT BARS ...................................................................... 15.8

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SECTION 16 CONCRETE AND JOINTS IN CONCRETEPART 1: CONCRETE WORKSPage No.

NOTE ................................................................................................................... 16.3 GENERAL16.02 Designation of Concrete Mixes .............................................................................. 16.4

GLOSSARY OF TERMS16.05 Grade Strength ......................................................................................................... 16.4

MATERIALS16.06 16.07 16.08 16.09 16.11 Cement ..................................................................................................................... Pulverized Fly Ash (PFA) ....................................................................................... Aggregates ............................................................................................................... Water ........................................................................................................................ Curing Compound ................................................................................................... 16.4 16.5 16.5 16.5 16.5

CONCRETE16.12 16.13 16.14 16.15 16.16 Concrete Mix ........................................................................................................... Chloride Content of Concrete ................................................................................. Cementitious Content of Designed Mix Concrete ................................................. Standard Mix Concrete ............................................................................................ No-fines Concrete .................................................................................................... 16.6 16.6 16.7 16.7 16.7

SUBMISSIONS16.18 Particulars of Concrete Mix .................................................................................... 16.8

TRIALS16.23 Trial Mix Concrete .................................................................................................. 16.8

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HANDLING AND STORAGE OF MATERIALS16.34 Handling and Storage of Aggregates ....................................................................... 16.8

BATCHING AND MIXING CONCRETE16.38 Mixing Concrete ....................................................................................................... 16.9

PLACING AND COMPACTING CONCRETE16.42 16.43 Placing Concrete by Pumping ................................................................................. 16.9 Placing Concrete by Tremie .................................................................................... 16.9

CONSTRUCTION JOINTS16.45 Construction Joints ................................................................................................... 16.9

CURING CONCRETE16.46 Curing Concrete ..................................................................................................... 16.10

TESTING: CEMENT, PFA, AGGREGATE, ADMIXTURE, CURING COMPOUND16.49 to 16.51 Batch: Cement, PFA, Aggregate, Admixture, Curing Compound ....................... 16.10 Testing: Cement, PFA, Aggregate, Admixture, Curing Compound, Recycled Water ....................................................................................................... 16.10

TESTING: CONCRETE - WORKABILITY16.54 16.55 16.57 Samples: Workability of Concrete ......................................................................... 16.10 Testing: Workability of Concrete ........................................................................... 16.11 Non-compliance: Workability of Concrete ........................................................... 16.11

TESTING: CONCRETE - COMPRESSIVE STRENGTH16.58 16.59 16.61 Samples: Compressive Strength of Concrete ........................................................ 16.11 Testing: Compressive Strength of Concrete .......................................................... 16.12 Compliance Criteria: Compressive Strength of Designed Mix Concrete ........... 16.12

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TESTING: HARDENED CONCRETE16.63 Samples: Hardened Concrete and Concrete Cores .............................................. 16.12

PART 2: JOINTS IN CONCRETE NOTE .................................................................................................................. 16.13 MATERIALS16.75 16.77 16.80 Joint Filler .............................................................................................................. 16.13 Joint Sealant ........................................................................................................... 16.13 Waterstops .............................................................................................................. 16.13

FORMING JOINTS16.85 16.87 Forming Grooves ................................................................................................... 16.13 Sealing Joints ......................................................................................................... 16.14

TESTING: MATERIALS FOR JOINTS16.91 16.92 Testing: Joint Filler, Joint Sealant, Waterstops ..................................................... 16.14 Compliance Criteria: Joint Filler .......................................................................... 16.14

SECTION 17 PRESTRESSINGGLOSSARY OF TERMS17.04 Prestressing Tendon ................................................................................................. 17.3

MATERIALS17.06 17.10 Prestressing Tendons ............................................................................................... 17.3 Grout for Prestressing Systems ............................................................................... 17.3

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SUBMISSIONS17.11 17.12 17.13 Particulars of Prestressing Systems ......................................................................... 17.3 Particulars of Prestressing Tendons ......................................................................... 17.4 Particulars of Grout Mix and Grouting Procedure ................................................. 17.4

TRIALS17.19 17.20 Grouting Trials ......................................................................................................... 17.4 Testing: Grouting Trials ........................................................................................... 17.4

HANDLING AND STORAGE OF MATERIALS17.26 Handling of Prestressing Tendons ........................................................................... 17.4

SURFACE CONDITION OF MATERIALS FOR PRESTRESSING SYSTEMS17.29 Surface Condition of Materials for Prestressing Systems ...................................... 17.4

INSTALLATION OF PRESTRESSING SYSTEMS17.30 17.33 Installation of Prestressing Systems ........................................................................ 17.5 Joints in Prestressing Tendons ................................................................................. 17.5

TENSIONING OF PRESTRESSING TENDONS17.38 17.40 17.41 Tensioning of Prestressing Tendons ........................................................................ 17.5 Post-tensioning ......................................................................................................... 17.5 Protection of External Prestressing Tendons and Anchorages ............................... 17.5

INSPECTION OF PRESTRESSING SYSTEMS17.43 Inspection of Prestressing Systems ......................................................................... 17.5

GROUTING OF PRESTRESSING SYSTEMS17.46 Grouting Injection .................................................................................................... 17.6

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TESTING: DUCT FRICTION17.55 Testing: Duct Friction .............................................................................................. 17.6

SECTION 18 STEELWORKNOTE .................................................................................................................... 18.3 GENERAL18.01 18.02 18.03 Steelwork ................................................................................................................. 18.3 Protection of Steelwork ........................................................................................... 18.4 Amendments to BS 5400:Part 6 ............................................................................. 18.5

MATERIALS18.04 18.12 18.13 18.14 18.15 18.16 Structural Steel ......................................................................................................... Stainless Steel .......................................................................................................... Cast Iron ................................................................................................................... Grout for Column Bases ......................................................................................... Lubricant for Nut Threads of HSFG Bolts ............................................................. Paint for Steelwork .................................................................................................. 18.6 18.8 18.9 18.9 18.9 18.9

SUBMISSIONS18.18 18.22 18.26 18.28 Particulars of Workshop Drawings ....................................................................... Particulars of Welding Procedure ......................................................................... Particulars of Inspecting Authority and Testing Consultant ................................ Samples of Materials ............................................................................................. 18.10 18.10 18.10 18.10

TRIALS18.29 Procedure Trials for Welding, Flame Cutting and Shearing ................................ 18.11

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HANDLING, STORAGE AND TRANSPORT OF MATERIALS18.41 Storage of Steelwork .............................................................................................. 18.12

FABRICATION OF STEELWORK18.43 18.45 18.51 18.52 Fabrication of Steelwork ........................................................................................ Welding, Heating and Cutting ............................................................................... Tightening of HSFG Bolts ..................................................................................... Defects in Steelwork .............................................................................................. 18.12 18.12 18.13 18.13

PREPARATION OF STEELWORK SURFACES18.54 18.55 18.56 18.58 18.59 18.60 Cleaning of Steelwork and Coated Surfaces ......................................................... Preparation of Steelwork Surfaces ........................................................................ Blast Cleaning of Steelwork .................................................................................. Mechanical Cleaning of Steelwork ....................................................................... Flame Cleaning of Steelwork ................................................................................ Cleaning of Bolts, Nuts and Washers .................................................................... 18.13 18.14 18.14 18.15 18.15 18.15

METAL COATINGS TO STEELWORK18.62 Metal Coatings to Steelwork ................................................................................. 18.16

PAINTING STEELWORK18.63 18.64 18.65 18.66 Painting Systems for Steelwork ............................................................................. 18.18 Application of Paint to Steelwork ...........................................................................18.18 Working Conditions for Painting ........................................................................... 18.19 Priming and Overcoating Time Limits .................................................................. 18.19

PROTECTION OF JOINTS IN STEELWORK18.71 18.75 18.76 Protection of HSFG Bolted Joints ......................................................................... 18.19 Joints Made after Coating the Parent Material ..................................................... 18.20 Sealing of Joints in Steelwork ............................................................................... 18.20

ERECTION OF STEELWORK18.83 Supporting Devices for Steelwork ........................................................................ 18.20

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TOLERANCES18.87 Tolerances: Erection of Steelwork ........................................................................ 18.20

TESTING: TESTS ON STEELWORK AT MANUFACTURERS WORKS18.89 Testing: Tests on Steelwork at Manufacturers Works ........................................ 18.20

TESTING: STEELWORK18.90 18.94 18.95 18.97 Batch: Steelwork .................................................................................................... Non-compliance: Steelwork .................................................................................. Samples: Steel ........................................................................................................ Testing: Welds ........................................................................................................ 18.21 18.22 18.22 18.22

APPENDIX 18-A REQUIREMENTS ON THE SUBMISSION OF PAINT SAMPLES ....................................................................................... 18.23

SECTION 19 HANDRAILING, LADDERS, STAIRS AND FLOORINGMATERIALS19.01 19.10 General Requirements ............................................................................................. 19.3 Bolts, Nuts, Screws, Washers and Rivets ............................................................... 19.3

DESIGNED BY CONTRACTOR19.12 Designed by Contractor ........................................................................................... 19.3

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FABRICATION OF HANDRAILING, LADDERS, STAIRS AND FLOORING19.15 Welding Steel ............................................................................................................ 19.3

SUBMISSIONS19.22 Particulars of Handrailing, Stairs, Ladders and Flooring ....................................... 19.4

SECTION 20 BRIDGEWORKSPART 1: WATERPROOFING MATERIALS20.01 Prefabricated Sheeting ............................................................................................. 20.3

SUBMISSIONS20.04 Particulars of Waterproofing Systems ..................................................................... 20.3

INSTALLATION OF WATERPROOFING SYSTEMS20.08 Installation of Waterproofing Systems .................................................................... 20.3

PART 2: BRIDGE BEARINGS MATERIALS20.14 20.15 Holding-down Bolts for Bridge Bearings ............................................................. 20.4 Cement Mortar, Grout and Adhesive for Bridge Bearings ..................................... 20.4

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DESIGN OF BRIDGE BEARINGS20.17 Design of Bridge Bearings ...................................................................................... 20.4

INSTALLATION OF BRIDGE BEARINGS20.26 Installation of Bridge Bearings ............................................................................... 20.4

TESTING: BRIDGE BEARINGS - GENERAL REQUIREMENTS20.29 Testing: Bridge Bearings ......................................................................................... 20.5

PART 3: VEHICULAR PARAPETS MATERIALS20.40 20.41 Holding-down Bolts for Vehicular Parapets ........................................................... 20.6 Grout for Holding-down Bolts ................................................................................ 20.6

INSTALLATION OF VEHICULAR PARAPETS20.44 Installation of Vehicular Parapets ........................................................................... 20.6

TOLERANCES20.49 20.51 20.52 Testing: Parapets Materials ..................................................................................... 20.6 Testing: Welded Components of Vehicular Parapets ........................................... 20.6 Testing: Metal Vehicular Parapet Posts ................................................................ 20.7

PART 4: MOVEMENT JOINTS DESIGN OF FABRICATED MOVEMENT JOINTS20.63 Design of Fabricated Movement Joints .................................................................. 20.8

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INSTALLATION OF FABRICATED MOVEMENT JOINTS20.67 Installation of Fabricated Movement Joints ............................................................ 20.8

SECTION 21 MARINE WORKSGLOSSARY OF TERMS21.09 Reclamation .............................................................................................................. 21.3

MATERIALS21.12 21.13 21.15 21.16 21.18 21.21 21.22 Table 21.6 21.24 Fill Material for Marine Works ................................................................................ Rock Armour ............................................................................................................ Facing Stones ........................................................................................................... Bermstones ............................................................................................................... Joint Filler for Slip Joints ......................................................................................... Rubber for Fenders ................................................................................................... Plastic Fenders .......................................................................................................... Physical Properties of Plastic Fenders .................................................................... Precast Concrete Pipes and Fittings for Submarine Outfalls ................................. 21.3 21.4 21.4 21.4 21.4 21.5 21.5 21.5 21.5

SUBMISSIONS21.25 21.26 Particulars of Marine Works .................................................................................... 21.5 Particulars of Dredging ............................................................................................ 21.5

HANDLING AND STORAGE OF MATERIALS21.36 21.38 Storage of Fill Material and Dredged Material ....................................................... 21.6 Handling and Storage of Precast Concrete Seawall Blocks, Copings and Wave Deflectors ....................................................................................................... 21.6

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GENERAL MARINE WORKS REQUIREMENTS21.42 21.44 21.46 21.49 21.50 21.52 Notification of Marine Works ................................................................................. Marine Traffic and Waterfront Operations ............................................................. Work Boats .............................................................................................................. Refuse Containment Booms and Floating Refuse for Use of Inert Construction and Demolition Material in Reclamation ......................................... Surveys for Marine Works ...................................................................................... Concreting in Locations Affected by Tides ............................................................ 21.6 21.6 21.7 21.7 21.7 21.7

DREDGING21.54 Dredging .................................................................................................................. 21.7

DEPOSITION OF FILL MATERIAL BELOW +2.5 mPD21.56 Deposition of Fill Material ...................................................................................... 21.8

DEPOSITION OF ROCK ARMOUR AND ROCK FOR UNDERLAYER21.59 Deposition of Rock Armour and Rock for Underlayer .......................................... 21.8

CONSTRUCTION OF MARINE STRUCTURES21.67 Bermstones for Marine Structures .......................................................................... 21.8

DEMOLITION OF MARINE STRUCTURES21.79 Demolition of Marine Structures ............................................................................ 21.9

TOLERANCES21.80 21.81 Tolerances: Dredging .............................................................................................. 21.9 Tolerances: Deposition of Fill Material .................................................................. 21.9

TESTING: DREDGED MATERIAL21.88 Testing: Dredged Material ..................................................................................... 21.9

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TESTING: PARTICLE SIZE DISTRIBUTION, PLASTICITY INDEX AND COEFFICIENT OF UNIFORMITY OF FILL MATERIAL FOR MARINE WORKS21.89 21.90 Batch: Fill Material for Marine Works .................................................................. 21.10 Samples: Fill Material for Marine Works ............................................................. 21.10

TESTING: RELATIVE DENSITY, WATER ABSORPTION, AGGREGATE IMPACT VALUE, TEN PERCENT FINES VALUE, AGGREGATE ABRASION VALUE, SOUNDNESS, RESISTANCE TO FRACTURE AND WEIGHT OF ROCK ARMOUR AND ROCK FOR UNDERLAYER21.93 21.95 21.96 21.97 21.99 Batch: Rock Armour .............................................................................................. Testing: Rock for Rock Armour ............................................................................ Samples: Rock Armour .......................................................................................... Testing: Rock Armour ............................................................................................ Non-compliance: Dropping Test ........................................................................... 21.10 21.10 21.10 21.11 21.11

Appendix 21.1 Loading Test for Plastic Fenders ........................................................................... 21.11

APPENDIX 21-A DETERMINATION OF SAND CONTENT OF DREDGED MATERIALS .................................................................................................. 21.12

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SECTION 22 WATER SUPPLY PIPEWORKSPage No.

NOTE .................................................................................................................... 22.3 MATERIALS22.13 22.14 to 22.20 22.21 22.22 22.27 Materials for Water Supply Pipeworks ................................................................... Steel Pipes and Fittings ........................................................................................... Elastomeric Joint Rings ........................................................................................... Anticorrosion Tape .................................................................................................. Bituminous Coatings ............................................................................................... Extension keys ......................................................................................................... 22.3 22.3 22.3 22.3 22.3 22.4

MATERIALS PROVIDED AND EQUIPMENT LOANED BY THE EMPLOYER22.28 22.29 Materials Provided by the Employer ...................................................................... 22.4 Equipment Loaned by the Employer ...................................................................... 22.4

INSPECTION OF MANUFACTURE22.30 Inspection of Manufacture and Testing .................................................................. 22.4

TRIALS22.35 Welding Trials .......................................................................................................... 22.4

TRANSPORT, HANDLING AND STORAGE OF MATERIALS22.38 22.40 Transport, Handling and Storage of Pipes, Joints and Fittings ............................. 22.5 Storage of Pipes ....................................................................................................... 22.5

SETTING OUT OF PIPELINES22.45 Setting-out of Pipelines ............................................................................................. 22.5

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LAYING AND BEDDING PIPES22.46 Laying Pipes ............................................................................................................. 22.5

CUTTING AND DRILLING PIPES22.51 Cutting Pipes ............................................................................................................ 22.6

JOINTING PIPES22.53 Jointing Pipes ........................................................................................................... 22.6

THRUST AND ANCHOR BLOCKS22.69 Thrust and Anchor Blocks ....................................................................................... 22.6

BED, HAUNCH AND SURROUND22.70 Concrete Bed, Haunch and Surround ...................................................................... 22.6

TOLERANCES22.71 Tolerances: Pipelines ................................................................................................ 22.6

SWABBING22.72 Swabbing of Pipelines .............................................................................................. 22.7

WORK ON ASBESTOS CEMENT PIPES AND DISPOSAL OF ASBESTOS WASTES22.77 Work on Asbestos Cement Pipes and Disposal of Asbestos Wastes ...................... 22.7

TESTING: JOINTS IN STEEL PIPES22.78 Testing: Joints in Steel Pipes ................................................................................. 22.7

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