WATER SUPPLY CODE OF AUSTRALIA. Hunter Water Corporation Version 2

Transcription

1 WATER SUPPLY CODE OF AUSTRALIA Hunter Water Corporation Version 2 WSA

2 Water Supply Code of Australia WSA Hunter Water Edition Version 2 Previous edition WSA 03: Previous Hunter Water edition WSA 03 December 2009

3 PREFACE INTRODUCTION CONTENTS PART 0: GLOSSARY OF TERMS AND ABBREVIATIONS I Glossary of Terms II Abbreviations III Referenced Documents PART 1: PLANNING AND DESIGN Contents 1 General 2 System Planning 3 Hydraulic Design 4 Products and Materials 5 General Design 6 System Pressure Management 7 Structural Design 8 Appurtenances 9 Design Review and Drawings PART 2: CONSTRUCTION Contents 10 General 11 General Construction 12 Products and Materials 13 Excavation 14 Bedding for Pipes 15 Pipe Laying, Jointing and Connecting 16 Pipe Embedment and Support 17 Fill 18 Swabbing 19 Acceptance Testing Tolerances on As-Constructed Work 22 Connections to Existing Water Mains 23 Restoration 24 Work As Constructed Details

4 4 WSA PART 3: DRAWINGS Contents HW 25 Introduction HW 26 Listing of Drawings HW 27 Commentary on W AT-1100 Series Pipeline Layout HW 28 Commentary on WAT-1200 Series Embedment, Trench Fill and Restraints HW 29 Commentary on W AT-1300 Series Installation Practices/Structures HW 30 Commentary on W AT-1400 Series Fabrication Details HW 31 Commentary on W AT-1800 Series Dual Water Supply Systems HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017

5 WATER SUPPLY CODE OF AUSTRALIA VERSION 3.1 (HUNTER WATER EDITION) VERSION 2 APPENDICES Appendix A Generic Infrastructure Protection Guidance Appendix B Equivalent Pipe Sizes for Commonly Used Materials Appendix C Under Pressure Cut-In Connection to Pressure Pipes DN 80 Appendix D Booster Configurations Appendix E Selection of Pressure Accumulator Tanks Appendix F Water Mains in Slip and Potentially Unstable Areas Appendix G Soil Classification Guidelines and Allowable Bearing Pressures for Anchors and Thrust Blocks Appendix H Appendix J Appendix K Appendix HWL Appendix HWM Hydrant Spacings Safety Assurance Plan and Job Safety Analysis Connectivity Inspection of Dual Water Supply Systems Telemetry Signal Requirements Environmental Considerations

6 Water Supply Code of Australia WSA Hunter Water Edition Version 2 Part 1: Planning and Design HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

7 WSA CONTENTS 1 GENERAL 1.1 SCOPE 1.2 PLANNING AND DESIGN Objectives Scope and requirements Concept plan format Critical infrastructure protection Asset categorisation All hazards Infrastructure protection Detailed design Designer s needs and responsibilities Requirements to be addressed Design outputs Design life Instrumentation and control systems 1.3 CONSULTATION WITH OTHER PARTIES HW 1.4 SYSTEM STRATEGIES HW Regional servicing strategies HW Local (developer) servicing strategies HW Servicing strategies Security of supply HW Validity of strategies and designs 2 SYSTEM PLANNING 2.1 GENERAL 2.2 SYSTEM PLANNING PROCESS General Extending / upgrading an existing water supply system Providing a new water supply Non-drinking water as drinking water substitution 2.3 DEMANDS General Dual water supply systems General Rainwater tanks Demand assessment General Residential Non-residential Peak demands General Peak day demand HW Average day demand HW Extreme day demand HW Peak and extreme week demands HW Diurnal demand HW th percentile peak day demand HW Fire fighting HW Unaccounted water HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

8 37 WSA SYSTEM CONFIGURATION 2.5 SYSTEM HYDRAULICS General Network analysis Operating pressures Service pressure Maximum allowable service pressure Minimum service pressure Average service pressure Pressure variation analysis Determining supply zones General Use of minimum allowable or desirable minimum service pressures Use of desirable minimum static pressure 2.6 WATER QUALITY General Prevention of back siphonage Water age Disinfection 2.7 SEPARATION OF DRINKING AND NON-DRINKING WATER SUPPLY SYSTEMS Permanent cross links and cross connections Temporary cross links 2.8 PUMPING STATIONS General Design factors System related factors Site related factors Service related factors Concept design 2.9 SERVICE RESERVOIRS Storage capacity Location 2.10 TRENCHLESS TECHNIQUES FOR PIPELAYING 2.11 FUTURE SYSTEM EXPANSION 2.12 SYSTEM REVIEW 3 HYDRAULIC DESIGN 3.1 SIZING General Minimum pipe sizes Empirical sizing of reticulation mains Dual water supply systems Fire flows Sizing by analysis General Head losses Hydraulic roughness values Flow velocities 3.2 DESIGN PRESSURES General Gravity systems Systems subjected to dynamic pressures HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

9 WSA PRESSURE CLASS OF SYSTEM COMPONENTS Gravity systems Systems subjected to dynamic pressures 3.4 THRUST AND ANCHOR BLOCK DESIGN 3.5 SYSTEM TEST PRESSURE 3.6 DESIGN FOR DYNAMIC STRESSES General Surge Fatigue Fatigue de-rating of plastics pipes and fittings 3.7 TEMPERATURE DE-RATING OF PLASTICS PIPES AND FITTINGS 3.8 PIPELINE COMPONENTS MINIMUM PRESSURE CLASS HW 3.9 DESIGN INPUTS AND OUTPUTS 4 PRODUCTS AND MATERIALS 4.1 GENERAL 4.2 DIFFERENTIATION OF DRINKING AND NON-DRINKING PIPE SYSTEMS Principles Water supply mains drinking water Water supply mains non-drinking water Property services drinking water Property services non-drinking water Marking tapes 4.3 DUCTILE IRON PIPELINE SYSTEMS Product Specifications Sizes and configurations Seal coating of lining of cement mortar lined DI pipes HW Seal coating of lining of cement mortar lined steel pipes Sleeving Screw-on flanges for DI pipes Flanged joints 4.4 PVC PIPELINE SYSTEMS 4.5 PE PIPELINE SYSTEMS 4.6 STEEL PIPELINE SYSTEMS Product Specifications Sizes and configurations Joints Field welding Flanged joints 4.7 GRP PIPELINE SYSTEMS 4.8 PROTECTION AGAINST DEGRADATION Application Protection against aggressive environments Protection against damage to coatings Stainless steels Grade selection Welding Threaded components Cathodic protection Stray current corrosion HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

10 39 WSA Protection against contaminated ground Bolted connections 5 GENERAL DESIGN 5.1 GENERAL REQUIREMENTS Design tolerances Levels Water main renewals electrical safety and earthing to water services Environmental considerations General Urban salinity HW Survey control HW Marking HW Horizontal control HW Vertical control 5.2 RETICULATION DESIGN FOR WATER QUALITY Layout of water mains Looped mains Link mains Reduced size mains 5.3 WATER MAIN ACCESS 5.4 LOCATION OF WATER MAINS General Water mains in road reserves General Location in footway Location in carriageway Location in roundabouts and bus bays Location in other than dedicated public road reserves Water mains in easements Dual water supply systems Effect on vegetation Water mains near trees Contaminated sites Crossings General Requirements for encased pipe installations Railway reserves Crossings of creeks or drainage reserves Overhead power lines and transmission towers Water mains in conjunction with landscaping and/or other development Water mains on curved alignments Location markers Marking tape General Mains Property services 5.5 TRENCHLESS TECHNOLOGY 5.6 SHARED TRENCHING 5.7 DUPLICATE MAINS 5.8 RIDER MAINS 5.9 CONNECTION OF NEW MAINS TO EXISTING MAINS HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

11 WSA TERMINATION POINTS Permanent ends of water mains Temporary ends of water mains Chlorination assemblies Flushing points 5.11 PROPERTY SERVICES General Connections to water mains Services, outlets and meters 5.12 OBSTRUCTIONS AND CLEARANCES General Surface obstructions Clearance from transmission towers Clearance from structures and property boundaries Underground obstructions and services General Clearance requirements Deviation of water mains General Horizontal deviation of water mains Vertical deviation of water mains Curving of pipes to avoid obstructions 5.13 DISUSED OR REDUNDANT PIPELINES 6 SYSTEM PRESSURE MANAGEMENT 6.1 GENERAL 6.2 IN-LINE PRESSURE BOOSTER PUMPING STATIONS Planning criteria Concept design General Life cycle considerations Functionality Due diligence requirements Reliability Maintainability Materials design Location Site selection Noise control Services Access Site drainage Landscaping Security Signage Supporting systems Health and safety Commissioning plan General Pre-commissioning Commissioning System planning and modelling Modelling Minimum pressure affecting the area HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

12 41 WSA Number of affected properties within the low pressure zone Booster design General Connection to the network Maximum flow and pressure requirements Design for minimum pressure boost conditions Design for minimum flow conditions Booster configuration design Booster set and pump selection Booster pipework and manifold design Booster equipment and devices Site specific requirements Booster pipework General design parameters Manifolds, off-takes, suction and delivery pipework Pressure gauges and tappings Pressure accumulator tank Power system and supply General Security of supply Primary supply Duplicate supply Emergency power On-site generator Mobile generator Power factor correction Lighting Control and telemetry system General Instrumentation System requirements Fire flow operation Alarms and controls General Control switches manual and emergency operation Telemetry General Software Communications 6.3 PRESSURE REDUCING VALVE INSTALLATIONS Planning criteria Design requirements 6.4 PRESSURE SUSTAINING VALVE INSTALLATIONS Planning criteria Design requirements 7 STRUCTURAL DESIGN 7.1 GENERAL 7.2 STRUCTURAL CONSIDERATIONS 7.3 INTERNAL FORCES 7.4 EXTERNAL FORCES General Pipe cover Embedment zone dimensions HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

13 WSA Pipe embedment Buoyancy 7.5 GEOTECHNICAL CONSIDERATIONS General Water mains in engineered or controlled fill Water mains in non-engineered fill Construction of an embankment 7.6 CONCRETE ENCASEMENT General Requirements Encased steel pipelines General Existing steel pipelines 7.7 WATER MAINS IN UNSTABLE GROUND General Mine subsidence areas Slip areas 7.8 ABOVE-GROUND WATER MAINS 7.9 PIPELINE ANCHORAGE General Thrust blocks General Concrete thrust blocks Use of puddle flanges to transfer thrust Timber and recycled plastics thrust blocks Anchor blocks Thrust and anchor blocks for dual water supply systems Restrained elastomeric seal joint water mains Restraint requirements for special situations Above-ground mains with unrestrained flexible joints Buried steel mains with welded joints Above-ground steel mains with welded joints Ductile iron and steel mains with flanged joints PE mains 7.10 BULKHEADS AND TRENCHSTOPS 7.11 UNFORESEEN GROUND CONDITIONS 8 APPURTENANCES 8.1 VALVES GENERAL Valving design Valve siting principles Selection considerations Local in-line booster pumping stations Plastics identification covers 8.2 STOP VALVES Product Specifications Installation design and selection criteria General Gate valves Butterfly valves Stop valves for transfer/distribution mains Stop valves for reticulation mains HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

14 43 WSA Stop valves for local in-line booster pumping stations Bypass of stop valve Stop valves location and arrangements General Arrangement Arrangement Arrangement Arrangement Arrangement Arrangement Arrangement Stop valve special arrangements Rider mains and network configurations Crossing mains interconnection 8.3 CONTROL VALVES Product Specifications Automatic inlet control valves (AICV) Pressure reducing valves (PRV) Pressure relief valves (PRelV) Pump control valves Pressure sustaining valves (PSV) 8.4 AIR VALVES (AV) Product Specifications Installation design criteria Air valves type Air valves size Air valves location Use of hydrants as an alternative to air valves Water sampling via air valves 8.5 NON-RETURN VALVES Product Specifications Installation design criteria Non-return valves for local in-line booster pumping stations and boosted zones 8.6 SCOURS AND PUMP-OUT BRANCHES Location and arrangements Design Scour application Scour size Scour location 8.7 SWABBING POINTS 8.8 HYDRANTS Product Specifications Purposes Hydrant siting principles Hydrant types Hydrant installation Hydrant outlet connections Hydrant size Hydrant spacing Hydrant location Hydrants for reticulation system operational requirements Hydrants at ends of mains 8.9 DISINFECTION FACILITIES General HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

15 WSA Reticulation mains Transfer and distribution mains Discharge 8.10 SURFACE FITTINGS Product Specifications General Marking of surface fittings Installation requirements 8.11 APPURTENANCE LOCATION MARKING General Marker posts and plates Pavement markers Kerb markings 9 DESIGN REVIEW AND DRAWINGS 9.1 DESIGN REVIEW 9.2 DESIGN DRAWINGS General Composition of Design Drawings Scale Contents of Design Drawings Pipeline system acronyms Water mains >DN SPECIFICATIONS 9.4 RECORDING OF WORK AS CONSTRUCTED INFORMATION HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

16 45 WSA TABLES Table 1.1 Table 1.2 Table 2.1 Table 2.2 Table 2.3 Table HW 2.4 Table HW 2.5 Table HW 2.6 Table HW 2.7 Table 3.1 Table 3.2 Table 3.3 Table 3.4 Table 4.1 Table 5.1 Table 5.2 Table 5.3 Table 5.4 Table 5.5 Table 6.1 Table 7.1 Table 7.2 Table 7.3 Table 7.4 Table 7.5 Table 8.1 Table 8.2 Table 8.3 Table 8.4 FIGURES Figure 1.1 Figure HW 1.2 Figure 2.1(a) Figure 2.1(b) Asset Categories Typical Asset Design Lives Guide to Demand Allocation Within Dual Water Systems Typical Peak Hour Demand Work Sheet for Dual Water Supply Systems Water Supply Design Demands Peak and Extreme Week Demand Factors Diurnal Demand Factors Service Pressure (SP) Limits Minimum Pipe Sizes for Particular Developments Empirical Guide for Pipe Sizing Methods for Design of Plastics Pipes and Fittings for Dynamic Stresses Colour Differentiation of Drinking Water and Non-Drinking Water Components in Dual Water Reticulation Systems Design Requirements for Reduced Sized Drinking Water Mains in Court Bowls, Cul-de-Sacs and Dead-Ends Default Easement Guidelines Residential Property Service Pipe/Connection Sizes Clearances Between Water Mains and Underground Services Flow Velocities PVC Pipe Material Characteristics Requirements for Bulkheads and Trenchstops Colour Coding of Spindle Cap Plastics Covers Stop Valve Spacing Criteria Maximum Water Main Drainage Times Minimum Scour Size Typical Water Supply System Water Supply Planning and Design Requirements Single Transfer/Distribution Main, Minor Network and Dead-End Branch Mains Single Transfer/Distribution Main, Network With Multiple Distribution Mains and Branch Mains With Reduced Diameter Dead-Ends HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

17 WSA Figure 2.1(c) Figure 2.2 Figure 3.1 Figure 4.1 Figure 4.2 Figure 4.3 HW Twin Transfer/Distribution Mains, Network With Multiple Distribution Mains, Looped Mains and Link Mains to Minimise Dead-Ends, Some Reduced Diameter Dead-End Mains and Staging of Provision of Mains Typical Water Supply Pumping Station Arrangements System Pressure/Component Pressure Relationship Flange Fastener Tightening Sequence Typical Insulated Flanged Joint for Cathodically Protected Steel Mains Typical Bolted Connection Detail for Fusion Bonded Coated Ductile Iron Flanges With Stainless Steel Fasteners Figure 4.4 Typical Bolted Connection Detail and Corrosion Protection Procedure for Buried Ductile Iron Flanges With Galvanised Steel Fasteners Figure 4.5 Figure 5.1 Figure 5.2 Figure 5.3 Figure 5.4 Figure 5.5 Figure 5.6 Figure 5.7 Figure 5.8 Figure 5.9 Figure 5.10 Figure 5.11 Figure 5.12 Figure 5.13 Figure 5.14 Figure 5.15 Figure 5.16 Figure 5.17 Figure 5.18 Figure 5.19 Figure 6.1 Figure 6.2 Typical Bolted Connection Detail for PE Stub Flange and Raised Ductile Iron Flange With Stainless Steel Fasteners and Backing Plate Looped and Link Mains Design Requirements for Reduced Sized Mains in Court Bowls, Culde-Sacs and Dead-Ends Typical Shared/Combined Trench Installation Typical Shared/Combined Trench Installation Off-take Typical Flushing Assembly Details for Ends of Reduced Sized Mains Typical Split Service Main to Meter Across Road Carriageway Typical Property Service Layouts in Dual Water Supply Networks Typical Duct and Service Marker Details Horizontal Deviation by Deflection at Pipe Joints Plan View Horizontal Deflection Using a DI SOC-SOC Connector and Permitted Joint Deflections for DI Pipes and Other Applicable Pipe Types Plan View Deflection Using DI Bends with DI and Other Permitted Pipe Types Plan View Vertical Deviation by Deflection at Pipe Joints Section View Vertical Deviation Using DI Bends Section View Typical Anchor Block Detail for Vertical Bends Vertical Deflections Using Fabricated Pipe and Flanges Section View Vertical Deflections Using Double Offset Fabricated Pipe and Flanges Section View Typical Pre-Commissioning and Commissioning Process Typical Handover to Water Agency HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

18 47 WSA Figure 7.1 Figure 7.2 Figure 7.3 Figure 7.4 Figure 7.5 Figure 7.6 Figure 7.7 Figure 7.8 Figure 7.9 Figure 7.10 Figure 7.11 Figure 7.12 Figure 7.13 Figure 7.14 Figure 7.15 Figure 7.16 Figure 7.17 Figure 7.18 Figure 7.19 Figure 7.20 Figure 7.21 Figure 7.22 Figure 7.23 Figure 7.24 Figure 7.25 Figure 7.26 Figure 8.1 Figure 8.2 Figure 8.3 Figure 8.4 Figure 8.5 Figure 8.6 Figure 8.7 Figure 8.8 Figure 8.9 Figure 8.10 Figure 8.11 Figure 8.12 Figure 8.13 Figure 8.14 Plastics Identification Cover Bypass Arrangement With L-Type Ball Hydrant Branch Valve Adjacent to Main Branch Valve Adjacent to Inner Splay Corner Valve and Hydrant Combinations Valve Adjacent to a Taper Valves in Main Cross-Links Valves in Conjunction With Control Valves Two Direction Supply HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

19 WSA Figure 8.15 Figure 8.16 Figure 8.17 Figure 8.18 Figure 8.19 Figure 8.20 Figure 8.21 Figure 8.22 Figure 8.23 Figure 8.24 Figure 8.25 Figure 8.26 Figure 8.27 Figure 8.28 Figure 8.29 Figure 8.30 Figure 8.31 Figure 8.32 Figure 8.33 Figure 8.34 Figure 8.35 Figure 8.36 Figure 8.37 Figure 8.38 Figure 8.39 Off-take Arrangement for Rider Mains Interconnection of DN 200 and DN 225 Crossing Mains Interconnection of Reticulation and Distribution Mains Interconnection of Distribution Mains Interconnection of a Continuing Reticulation Main and Larger Main Typical Pressure Reducing Valve Installation Sectional Elevation Alternative Above-Ground Installation PRV on Bypass Side Elevation PRV on Main Line With Bypass Plan View Typical Air Valve Orientation Typical Air Valve Installation Spring Hydrant Typical Direct Connection Isolating Valve Assembly With Spring Hydrant Typical Hydrant Installation in Non-Trafficable Location Typical Hydrant Installation in Trafficable Asphaltic Concrete Pavement Typical Hydrant With Isolating Valve Installation With Spring Hydrant Option in Non-Trafficable Location Typical Offsetting of Hydrants in Footway Retro-Reflective Pavement Markers HUNTER WATER EDITION VERSION 2 COPYRIGHT JULY 2017

20 Water Supply Code of Australia WSA Hunter Water Edition Version 2 Part 2: Construction

21 WSA GENERAL 10.1 SCOPE 10.2 INTERPRETATION CONTENTS 11 GENERAL CONSTRUCTION 11.1 GENERAL 11.2 ORDER OF CONSTRUCTION, TESTING AND COMMISSIONING 11.3 CONTRACT INTERFACES 11.4 CUSTOMER FOCUS General Resolution of complaints 11.5 PROTECTION OF PROPERTY AND ENVIRONMENT Protection of other services Disused / Redundant water mains Road reserves or other thoroughfares Road opening permits Treatment of pavements and other surfaces Cleanliness of roads, paths, accesses and drainage paths Storage of products, materials and equipment Obstruction of street drainage Private and public properties Protection of the environment and heritage areas General Collection and disposal of wastes Protection of adjacent lands and vegetation Control of water pollution Contaminated soils Fire ant areas Control of noise and atmospheric pollution Equipment and machinery use in bush fire prone areas 11.6 OPERATION OF WATER SUPPLY NETWORK 11.7 ALTERATION OF EXISTING SERVICES 11.8 CONNECTION TO AND WORK ON EXISTING ASBESTOS WATER MAINS 11.9 CUT-IN CONNECTION EQUIPMENT SURVEY MARKS CONSTRUCTION TOLERANCES LATENT CONDITIONS 12 PRODUCTS AND MATERIALS 12.1 AUTHORISED PRODUCTS AND MATERIALS General 12.2 DELIVERY INSPECTION OF PRODUCTS AND MATERIALS 12.3 TRANSPORTATION, HANDLING AND STORAGE OF PRODUCTS AND MATERIALS General Transportation Unloading and handling On-site storage 12.4 REJECTED PRODUCTS AND MATERIALS 12.5 CONCRETE WORKS 12.6 SUPPLY OF WATER TO THE WORKS 12.7 SUPPLY OF WATER TO E XIS TING PROPE RTIES 12.8 UNDER PRESSURE CUT-IN CONNECTION TO PRESSURE PIPES DN Flanged off-takes Valves Flange holes HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017

22 227 WSA Gaskets Bolting system General Carbon or alloy steel bolt assemblies Stainless steel bolt assemblies Insulation sleeves Plastics inserts for metallic pipes 13 EXCAVATION 13.1 PRECAUTIONS 13.2 LIMITS OF CLEARING AND EXCAVATION 13.3 PROTECTION OF TREES General precautions Protection of roots 13.4 BLASTING 13.5 SUPPORT OF EXCAVATIONS 13.6 DRAINAGE AND DEWATERING 13.7 UNDER PRESSURE CUT-IN CONNECTION TO PRESSURE PIPES dn Excavation requirements Extent of excavation 13.8 EXCAVATION ACROSS IMPROVED SURFACES 13.9 TRENCH EXCAVATION General Construction of embankment Clearances for on-site works REFILL OF EXCESSIVE EXCAVATION FOUNDATIONS AND FOUNDATION STABILISATION SURPLUS EXCAVATED MATERIAL TUNNELLING 14 BEDDING FOR PIPES 14.1 TRENCH FLOOR PREPARATION 14.2 BEDDING AND PIPE SUPPORT 14.3 SPECIAL PIPE SUPPORT FOR NON-SUPPORTIVE SOILS 15 PIPE LAYING, JOINTING AND CONNECTING 15.1 INSTALLATION OF PIPES General Dual water supply areas Cleaning, inspection and joint preparation Laying Lift and re-lay construction 15.2 HORIZONTAL AND VERTICAL DEFLECTIONS OF PIPES General Deflection at a pipe joint Curving of pipe 15.3 HORIZONTAL AND VERTICAL SEPARATION OF CROSSING PIPELINES 15.4 VALVES, HYDRANTS AND OTHER APPURTENANCES 15.5 UNDER PRESSURE CUT-IN CONNECTION TO PRESSURE PIPES DN Inspection of host pipe Inspection of valve to be installed Disinfection of fittings and equipment Installation of off-take clamp Installation of the valve Cut-in operation Recording and reporting 15.6 FLOTATION CONTROL 15.7 THRUST AND ANCHOR BLOCKS AND RESTRAINED JOINTS HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017

23 WSA TAPPING OF MAINS, PROPERTY SERVICES AND WATER METERS 15.9 TRENCH STOPS BULKHEADS CORROSION PROTECTION OF DUCTILE IRON MARKING TAPES Non-detectable marking tape Detectable marking tape Tracer wire VALVES, HYDRANTS AND SURFACE BOXES AND FITTINGS Installation Valve chambers for large diameter mains SCOURS BORED PIPES UNDER ROADS, DRIVEWAYS AND ELSEWHERE AQUEDUCTS BRIDGE CROSSINGS APPURTENANCE LOCATION MARKING FLANGED JOINTS WELDING OF STEEL PIPELINES General Field welding of flanges Reinstatement of cement mortar lining Reinstatement of external corrosion protection at joints using a tape system Surface preparation Priming surfaces Mastic filler Tape application Reinstatement of external corrosion protection at joints using a heat-shrinkable sleeve system Surface preparation Preheat pipe Priming surfaces Mastic filler Heat-shrinkable sleeve preparation Heat-shrinkable sleeve application WELDING OF PE PIPELINES 16 PIPE EMBEDMENT AND SUPPORT 16.1 GENERAL 16.2 EMBEDMENT MATERIALS 16.3 COMPACTION OF EMBEDMENT Methods 16.4 SPECIAL BEDDING AND EMBEDMENTS / GEOTEXTILE SURROUND AND PILLOW 16.5 REMOVAL OF TRENCH SUPPORTS 16.6 CONCRETE EMBEDMENT AND ENCASEMENT 17 FILL 17.1 TRENCH FILL Material requirements Trafficable Areas Non-Trafficable Areas Placement Compaction of trench fill 17.2 EMBANKMENT FILL 17.3 DRIVES AND TUNNEL FILL 18 SWABBING 18.1 GENERAL 18.2 SWABS 18.3 SWABBING PROCEDURE HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017

24 19 ACCEPTANCE TESTING 19.1 GENERAL 19.2 VISUAL INSPECTION 19.3 COMPACTION TESTING General Compaction testing requirements General Trafficable areas test zone Non-trafficable areas test zone Frequency and location of tests Retesting 19.4 HYDROSTATIC PRESSURE TESTING General Mains Property services Under pressure cut-in connections 19.5 BLOCK TESTING DUAL WATER SUPPLY SYSTEMS FOR CONNECTIVITY 19.6 INSULATED JOINT RESISTANCE TEST 19.7 WATER QUALITY TESTING General Test procedure Satisfactory water quality test Failure of test 20 NOT USED 20.1 NOT USED 20.2 NOT USED 21 TOLERANCES ON AS-CONSTRUCTED WORK 21.1 GENERAL 21.2 HORIZONTAL TOLERANCES Water mains and in-line structures Property services and meters 21.3 VERTICAL TOLERANCES Water mains, property connections and structures Verticality ( plumb ) 21.4 TOLERANCES ON FINISHED SURFACE STRUCTURES AND FITTINGS 21.5 CAST IN-SITU CONCRETE STRUCTURES AND SLABS 22 CONNECTIONS TO EXISTING WATER MAINS 22.1 GENERAL 22.2 UNDER PRESSURE CONNECTIONS 22.3 INSERTED TEE CONNECTIONS Shutdown of existing water mains Making the connection to existing water main Re-charging the shutdown water main 22.4 CONNECTION AND/OR CHARGING THE NEW WATER MAINS 22.5 RECONNECTION OF PROPERTIES SUPPLIED BY TEMPORARY PRIVATE SERVICES 23 RESTORATION 23.1 GENERAL 23.2 PAVEMENTS 23.3 LAWNS 23.4 GRASSED AREAS 23.5 BUSHLAND 23.6 PROVISION FOR AND RECTIFICATION OF SETTLEMENT 23.7 MAINTENANCE OF RESTORED SURFACES 24 WORK AS CONSTRUCTED DETAILS 229 WSA HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017

25 WSA TABLES Table 18.1 Table 19.1 Dimensions of Swabs and Discharge Units Minimum Compaction of Embedment, Trench Fill and Embankments FIGURES Figure 13.1 Figure 15.1 Figure 15.2 Figure 15.3 Figure 15.4 Typical Excavation Dimensions Ball and Socket Joint Slip-In Welded Joint Plain End Welded Collar Joint Plain End Butt Welded Joint HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017

26 Water Supply Code of Australia WSA Hunter Water Edition Version 2 Part 3: Drawings

27 WSA HW 25 INTRODUCTION HW 25.1 GENERAl HW 25.2 DRAWING COMMENTARY CONTENTS HW 25.3 VARIED DRAW INGS HW 25.4 SUPPLEMENTARY (ADDITIONAL) DRAWINGS HW 25.5 HUNTER WATER REFERENCE DRAWINGS (SUPERSEDED STANDARD CONSTRUCTION PRACTICE SERIES) HW 26 LISTING OF DRAWINGS HW 27 COMMENTARY ON WAT 1100 SERIES PIPELINE LAYOUT HW 27.1 GENERAL HW 27.2 WAT 1102-V, WAT-1103-V, WAT-1104-V AND WAT 1105-V TYPICAL MAINS CONSTRUCTION HW WAT 1102-V Reticulation main arrangements HW WAT 1103-V Distribution and transfer mains HW WAT 1104-V DN 63 PE cul-de-sac arrangement HW WAT 1105-V Connection to existing mains HW 27.3 WAT 1106-V AND WAT 1107-V PROPERTY SERVICES MAIN-TO-METER HW 27.4 WAT 1108-V PROPERTY SERVICES CONNECTION TO MAIN HW 27.5 WAT 1109-V PROPERTY SERVICES ABOVE GROUND METER ASSEMBLY ARRANGEMENT HW 27.6 WAT 1150-H WATER MAIN SYMBOLS HW 27.7 WAT 1151-H AND WAT 1152-H DESIGN LAYOUTS HW WAT 1151-H Typical locality plan HW WAT 1152-H Typical site plan HW 27.8 WAT 1153-H DESIGN LAYOUTS UTILITY SERVICES SPACE ALLOCATIONS IN FOOTWAYS HUNTER WATER AREA HW 28 COMMENTARY ON WAT 1200 SERIES EMBEDMENT, TRENCH FILL AND RESTRAINTS HW 28.1 GENERAL HW 28.2 WAT 1200 SOIL CLASSIFICATION GUIDELINES HW 28.3 WAT 1201-V EMBEDMENT AND TRENCH FILL HW 28.4 WAT 1202 STANDARD EMBEDMENT ALL PIPE TYPES HW 28.5 WAT 1203 SPECIAL EMBEDMENTS INADEQUATE AND POOR FOUNDATION HW 28.6 WAT 1204-V SPECIAL EMBEDMENTS CONCRETE, GEOTEXTILE AND CEMEN STABILISED SYSTEMS HW 28.7 WAT 1205 THRUST BLOCK DETAILS CONCRETE BLOCKS HW 28.8 WAT 1207-V THRUST AND ANCHOR BLOCKS GATE VALVES AND VERTICAL BENDS HW 28.9 WAT 1208 RESTRAINED JOINT SYSTEM DN 100 TO DN 375 DI MAINS HW WAT 1209 TRENCH DRAINAGE BULKHEADS AND TRENCHSTOP HW WAT 1210 TRENCH DRAINAGE TYPICAL SYSTEMS HW WAT 1211-V, WAT-1212-V, WAT-1213-V AND WAT 1214-V BURIED CROSSINGS HW WAT 1250-H AND WAT 1251-H STANDARD TRENCH DETAILS HW WAT 1252-H THRUST BLOCK DETAILS HW WAT 1253-H AND WAT 1254-H ANCHORAGE DETAILS STOP VALVE INSTALLATIONS HW WAT 1255-H BURIED CROSSINGS HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017

28 HW 29 COMMMENTARY ON WAT 1300 SERIES INSTALLATION PRACTICES / STRUCTURES HW 29.1 GENERAL HW 29.2 WAT 1300-V VALVE AND HYDRANT IDENTIFICATION 295 HW 29.3 WAT 1301-V AND WAT 1302-V TYPICAL VALVE & HYDRANT INSTALLATION HW 29.4 WAT 1303-V, WAT-1304-V, WAT-1305-V AND WAT 1306-V TYPICAL SURFACE FITTING INSTALLATION HW 29.5 WAT 1307-V TYPICAL APPURTENANCE (SCOUR) INSTALLATION HW 29.6 WAT 1308-V AND WAT 1309-V TYPICAL APPURTENANCE (VALVE) INSTALLATION HW 29.7 WAT 1310-V, WAT-1311 AND WAT 1312 AERIAL CROSSINGS HW 29.8 WAT 1313 FLANGED JOINTS HW 29.9 WAT 1350-H AND WAT 1351-H TYPICAL APPURTENANCE (VALVE) INSTALLATION HW WAT 1355-H AERIAL CROSSINGS CIRCULAR RC PIERS IN NON-FLOOD CONDITIONS HW 30 COMMENTARY ON WAT 1400 SERIES FABRICATION DETAILS HW 30.1 GENERAL HW 30.2 WAT 1400 TYPICAL STEEL PIPE JOINTING BUTT WELDING OF JOINTS HW 30.3 WAT 1401-V TYPICAL STEEL PIPE JOINTING RRJ SPIGOT BANDS HW 30.4 WAT 1402 TYPICAL STEEL PIPE JOINTING WELDED PIPE COLLARS HW 30.5 WAT 1403 TYPICAL STEEL FABRICATION BENDS HW 30.6 WAT 1404 TYPICAL STEEL FABRICATION ACCESS OPENINGS WSA HW 30.7 WAT 1405 TYPICAL STEEL FABRICATION DISMANTLING AND FLEXIBLE JOINTS HW 30.8 WAT 1406-V AND WAT 1407-V VALVE CONNECTION & BY-PASS ARRANGEMENTS HW 30.9 WAT-1408-V JOINT CORROSION PROTECTION HW WAT-1409 HYDRANT INSTALLATION FITTINGS PE ASSEMBLIES HW WAT 1450-H TYPICAL STEEL PIPE JOINTING LEAD AND RR JOINTS HW 31 COMMENTARY ON WAT 1800 SERIES DUAL WATER SUPPLY SYSTEMS HW 31.1 WAT 1800 TYPICAL MAINS CONSTRUCTION MAIN ARRANGEMENT FOR DUAL WATER SUPPLY HW 31.2 WAT 1801 TYPICAL MAINS CONSTRUCTION MAIN ARRANGEMENT FOR CUL- DE-SACS AND COURT BOWLS HW 31.3 WAT 1802 TYPICAL MAINS CONSTRUCTION MAIN ARRANGEMENT OFFTAKE MAIN DETAILS HW 31.4 WAT 1803 PROPERTY SERVICES TYPICAL SERVICE LAYOUTS AND ALTERNATIVE MARKING SYSTEMS HW 31.5 WAT 1804 PROPERTY SERVICES TYPICAL SERVICE ARRANGEMENT HW 31.6 WAT 1805 PROPERTY SERVICES STANDARD TAPPING METHODS HW 31.7 WAT 1806 PROPERTY SERVICES SINGLE AND SPLIT SERVICES ACROSS CARRIAGEWAYS HW 31.8 WAT 1806 PROPERTY SERVICES TYPICAL ABOVE-GROUND METER ARRANGEMENT HW 31.9 WAT 1807 PROPERTY SERVICES TYPICAL IN-GROUND METER ARRANGEMENTS HW WAT 1810 EMBEDMENT AND TRENCH FILL MAIN ARRANGEMENT FOR DUAL WATER SUPPLY SYSTEMS HW WAT 1811 EMBEDMENT AND TRENCH FILL MAIN ARRANGEMENT FOR DUAL WATER SUPPLY SYSTEMS HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017

29 WSA HW WAT 1820 HYDRANT IDENTIFICATION IDENTIFICATION MARKERS AND MARKER POSTS HW WAT 1821 VALVE IDENTIFICATION IDENTIFICATION MARKERS AND MARKER POSTS HW WAT 1822 TYPICAL APPURTENANCE INSTALLATION HYDRANT, VALVE AND FLUSHING INSTALLATION ON PE MAINS USING COMPRESSION FITTINGS HW WAT 1823 TYPICAL APPURTENANCE INSTALLATION HYDRANT, VALVE AND FLUSHING INSTALLATION ON PE MAINS USING ELECTROFUSION FITTINGS HW WAT 1824 TYPICAL APPURTENANCE INSTALLATION TEMPORARY CROSS CONNECTIONS HW WAT 1825 TYPICAL RECYCLED WATER SURFACE FITTINGS MARKING AND COLOUR IDENTIFICATION TABLES Table 28.1 Minimum Trench Dimensions HUNTER WATER EDITION V ERSION 2 COPY RIGHT JULY 2017