WATER & SANITATION DEPARTMENT - Cape Town

1 WATER & SANITATION DEPARTMENT . SERVICE GUIDELINES & STANDARDS. (20 June 2019 Version ). Service Guidelines & Standards for WATER and SANITATION DEPARTMENT CCT 1. DISCLAIMER. It is expected that any developer/engineer should utilise the city's infrastructure design standards as a guideline in the design and submission of infrastructure service designs. Information provided is based on latest available data which may be revised from time to time. The designs will have to be approved by the DEPARTMENT 's officials where a deviation from the standards may prove necessary for specific site conditions. The Standards do not remove the professional responsibility of the Engineer to assess the appropriateness to any specific site condition.

2 Service Guidelines & Standards for WATER and SANITATION DEPARTMENT CCT 2. TABLE OF CONTENTS. LIST OF EQUATIONS .. 8. LIST OF TABLES .. 8. CHAPTER 1: INTRODUCTION .. 9. 1. WATER DEMAND .. 9. Estimating Residential WATER Demand in South Africa (Cape Town) .. 10. Background .. 10. Guidelines for Residential Demand Estimation .. 11. CHAPTER 2: THE WATERBORNE SANITATION SYSTEM .. 14. 2. SCOPE .. 14. Unit Design Flows .. 14. Hydraulic 14. Physical Design .. 15. Manholes .. 16. Sewer 17. Pipes and Joints Page 33 .. 18. 3. SCOPE .. 19. Definitions .. 19. Material .. 19. General 19. Supplementary Requirements.

3 19. Dimensional Requirements of pipes .. 20. 20. Diameter .. 20. Out of Roundness .. 20. Straightness .. 20. Wall 20. Dimensional requirements of Fittings and Specials .. 21. General .. 21. Bends .. 21. Reducers .. 21. Tees and 21. Scour Tees .. 21. Joints .. 21. Flanges .. 21. Welding 22. Sleeved Joints .. 22. Fabrication of Steel Pipes .. 22. Pipe Ends .. 22. Pipe Ends for welding .. 22. Testing .. 22. Hydrostatic Testing .. 22. Dye Penetration Testing of Fittings and Specials .. 23. Visual inspection .. 24. Cement Mortar Lining and Sheathing .. 24. General .. 24. Preparation .. 24. Cement Mortar Lining.

4 24. Cement Mortar .. 24. Service Guidelines & Standards for WATER and SANITATION DEPARTMENT CCT 3. Thickness .. 24. Method of Application .. 25. Reinforcement .. 25. Curing .. 26. General .. 26. WATER Curing .. 26. Steam Curing .. 26. Exterior Sheathing .. 27. Thickness .. 27. Reinforcement .. 27. Curing .. 28. Protection against Corrosion .. 28. Marking and Delivery .. 29. Marking .. 29. Delivery .. 29. CHAPTER 4: STANDARD FOR FIBRE-CEMENT PIPES AND COUPLINGS, STEEL OR. CAST-IRON FITTINGS AND SPECIALS .. 33. 4. GENERAL .. 33. Scope .. 33. Definitions .. 33. Supplementary Requirements .. 33. Inspection.

5 33. Materials and Workmanship .. 34. Drawings .. 34. Description of Pipes, Fittings and Specials .. 34. Working Pressure .. 34. 34. Couplings .. 34. Fittings and 35. CHAPTER 5: STANDARD SPECIFICATION FOR GATE VALVES .. 36. 5. SCOPE .. 36. Working Pressures .. 36. Design .. 36. General .. 36. Wedge Gate Valves .. 37. Resilient seal valves .. 37. CHAPTER 6: SPECIFICATION FOR WATER METER BOXES AND FITTINGS .. 39. 6. SCOPE .. 39. Material .. 39. Fittings .. 39. Packing .. 39. CHAPTER 7: SPECIFICATIONS FOR ELECTRONIC FLOW LIMITER VALVE FITTED TO. METER BOX FITTED WITH WATER METER AND FITTINGS .. 40. 7.

6 Features .. 40. Valve Body .. 40. Meter in Box .. 41. After assembly test .. 42. Electronic PCB Controller .. 42. Software and Operating features .. 42. Training (Theory and practical on-site) .. 43. Service Guidelines & Standards for WATER and SANITATION DEPARTMENT CCT 4. Tamper-proof .. 43. Display Function .. 44. AMR feature .. 44. Battery .. 44. General .. 44. Software/ 45. CHAPTER 8: STANDARD FOR uPVC PIPES AND PRESSURE BENDS AND CAST-IRON. FITTINGS AND 46. 8. GENERAL .. 46. Scope .. 46. Definitions .. 46. Supplementary Requirements .. 46. Inspection .. 47. Materials and Workmanship .. 47. Drawings.

7 47. Descriptions of Pipes, Fittings and SPECIALS .. 47. Working Pressure .. 47. 47. Fittings and 47. Flanges .. 47. CHAPTER 9: SPECIFICATION FOR SPECIAL STOPCOCKS .. 48. 9. GENERAL .. 48. End Connections .. 48. Spindles .. 48. CHAPTER 10: SPECIFICATION FOR DUCTILE IRON SADDLES .. 49. GENERAL .. 49. CHAPTER 11: STANDARD FOR PLUMBING MATERIAL IN LOW COST HOUSING. PROJECTS .. 50. 50. 50. Pipes and piping systems for underground use in the supply of potable 50. Copper .. 50. Polypropylene (polycop) .. 51. HDPE (high density polyethylene) .. 51. Other types of plastic' pipes .. 51. Galvanised mild steel pipes.

8 52. Pipes and piping systems for above ground use.. 52. Material used for piping system above ground .. 52. Taps and Stopcocks .. 53. WATER closet cisterns .. 54. Hot WATER cylinders.. 54. CHAPTER 12: STANDARD SPECIFICATION FOR THE LAYING OF SMALL DIAMETER. WATER MAINS (50mm to 380mm Nominal Diameter) .. 56. WATER MAINS: PIPES, SPECIALS ETC. SUPPLIED BY CONTRACTOR .. 56. General .. 56. Jointing Material .. 56. Flanges .. 56. FC and uPVC Pipes and Specials .. 57. Service Guidelines & Standards for WATER and SANITATION DEPARTMENT CCT 5. Steel Pipes and Specials .. 57. CI Pipes and Specials .. 57. Concrete Sleeve Pipes.

9 57. Valves .. 57. Butterfly Valves .. 58. Fire Hydrants .. 58. Surface Boxes .. 58. WATER MAINS: PIPELAYING .. 59. Handling of Pipes etc.. 59. Laying of Pipes: General .. 59. Laying of pipe: Bedding, backfilling and compacting .. 60. Class Designation .. 60. Jointing .. 61. General .. 61. Installing Valves and Fittings .. 62. Installing Specials .. 62. Valve Chambers .. 63. Hydraulic Testing .. 63. Sterilisation of Mains .. 64. Alterations to Existing 65. 65. Pipe work in Buildings .. 66. COMMUNICATION PIPES (CONNECTIONS) .. 66. General .. 66. Existing Communication Pipes (Connections) .. 67. Materials Supply.

10 67. Sterilization .. 67. Testing .. 67. CHAPTER 13: STANDARD SPECIFICATION FOR FIRE HYDRANTS .. 68. GENERAL .. 68. Valve .. 68. Bend .. 68. Extension Piece .. 68. Reducer Adaptor .. 68. Outlet .. 69. Jointing Material .. 69. CHAPTER 14: DESIGN CRITERIA FOR SIZING THE COMPONENTS OF THE SYSTEM .. 70. WATER DEMAND .. 70. Hydraulic formulae .. 70. Peak 71. Fire-fighting requirements .. 71. Residual pressures .. 71. Erf 72. CHAPTER 15: KOSOVO VACUUM SEWER SYSTEM .. 73. SYSTEM 73. 75. Constraints .. 76. REFERENCES .. 77. APPENDIX A: FIRE 78. Service Guidelines & Standards for WATER and SANITATION DEPARTMENT CCT 6.