Standard Plans & Specifications

The City of Napa Public Works Standard Plans and Specifications:

Standard Specifications

Streets Standard Plans

Water Standard Plans

  1. Combined Specifications W-1A through W-28E (PDF)
  2. W-10A 2-inch Blow-Off Assembly (PDF)
  3. W-10B 2-inch Top Blow-Off Assembly (PDF)
  4. W-10C Transmission Valve Bypass (PDF)
  5. W-10D Water Sampling Station (CI, DIP Mains) (PDF)
  6. W-10E Water Sampling Station (AC, C900 Mains) (PDF)
  7. W-11A 1-inch Air Release and Vacuum Valve Assembly (6-inch and 8-inch Mains) (PDF)
  8. W-11B 2-inch Air Release and Vacuum Valve Assembly (12-inch and Larger Mains) (PDF)
  9. W-12 General Water Notes (PDF)
  10. W-13A Water Trench Detail (PDF)
  11. W-13B DOT Water Main Casing (PDF)
  12. W-14A Thrust Blocks and Wingwalls (PDF)
  13. W-14B Water Main Restraint Details (PDF)
  14. W-15 Water Main Offsets (PDF)
  15. W-16 Hot-Tap Detail (PDF)
  16. W-17 Abandonment of Existing Water Facilities (PDF)
  17. W-18 Water Facility Obstruction Separation Requirements (PDF)
  18. W-19 Future Main Extension Stub (PDF)
  19. W-1A 3/4-inch and 1-inch CPVC Water Service (CI, DIP Mains) (PDF)
  20. W-1B 3/4-inch and 1-inch CPVC Water Service (AC, C900 Mains) (PDF)
  21. W-1C 3/4-inch and 1-inch Copper Water Service (CI, DIP Mains) (PDF)
  22. W-1D 3/4-inch and 1-inch Copper Water Service (AC, C900 Mains (PDF)
  23. W-20A Metered Water Service Maintenance Responsibility (PDF)
  24. W-20B Fire Service Maintenance Responsibility (PDF)
  25. W-21 Fire Hydrant ("DB") Pavement Markers (PDF)
  26. W-22A Horizontal Separation Requirements from Utilities (PDF)
  27. W-22B Vertical Separation Requirements from Utilities (PDF)
  28. W-23A Pipe Connectivity (PDF)
  29. W-23B Exothermic Weld (PDF)
  30. W-23C Bond Cables (PDF)
  31. W-23D Cable Splice (PDF)
  32. W-24A Anode (PDF)
  33. W-24B Anode - Fitting (PDF)
  34. W-24C Anode - Vertical Offsets (PDF)
  35. W-24D Anode - Leak Repair Clamp (PDF)
  36. W-24E Driveable Magnesium Anode (PDF)
  37. W-25A Insulating Joint (PDF)
  38. W-25B Insulating Joint Coating (PDF)
  39. W-26A Test Station and Terminal Box (PDF)
  40. W-26B Anode Test Station - Existing System (PDF)
  1. W-26C Cable Identification (PDF)
  2. W-27A Corrosion Test Station (PDF)
  3. W-27B Foreign Pipeline Test Station (PDF)
  4. W-28A Anode Test Station - DIP (PDF)
  5. W-28B Anode Test Station - Fire Hydrant (PDF)
  6. W-28C Anode Test Station - Valve (PDF)
  7. W-28D Anode Test Station - Cross (PDF)
  8. W-28E Casing Anode Test Station (PDF)
  9. W-29A Wenner Four Pin Resistivity Test (PDF)
  10. W-29B Barnes Layer Resistivity (PDF)
  11. W-29C Soil Box Resistivity Test (PDF)
  12. W-2A 1.5-inch Water Service (CI, DIP Mains) (PDF)
  13. W-2B 1.5-inch Water Service (AC, C900 Mains) (PDF)
  14. W-2C 2-inch Water Service (CI, DIP Mains) (PDF)
  15. W-2D 2-inch Water Service (AC, C900 Mains) (PDF)
  16. W-3A 3-inch Water Service (CI, DIP Mains) (PDF)
  17. W-3B 3-inch Water Service (AC, C900 Mains) (PDF)
  18. W-3C 4-inch Water Service (CI, DIP Mains) (PDF)
  19. W-3D 4-inch Water Service (AC, C900 Mains) (PDF)
  20. W-3E 6-inch Water Service (CI, DIP Mains) (PDF)
  21. W-3F 6-inch Water Service (AC, C900 Mains) (PDF)
  22. W-4A 2-inch Fire Service (CI, DIP Mains) (PDF)
  23. W-4B 2-inch Fire Service (AC, C900 Mains) (PDF)
  24. W-4C 4-inch and Larger Fire Service (CI, DIP Mains) (PDF)
  25. W-4D 4-inch and Larger Fire Service (AC, C900 Mains) (PDF)
  26. W-4E 6-inch and Larger Metered Fire Service (CI, DIP Mains) (PDF)
  27. W-5A DCV Backflow Device for 3/4-inch and 1-inch Residential Water Services (PDF)
  28. W-5B DCV Backflow Device for 1.5-inch and 2-inch Residential Water Services (PDF)
  29. W-5C Exterior DCV Backflow Device for 3-inch to 8-inch Residential Water Services (PDF)
  30. W-5D Interior DCV Backflow Device for 3-inch to 8-inch Residential Water Services (PDF)
  31. W-6A Exterior RP Backflow Device for 3/4-inch to 2-inch Commercial Water Services (PDF)
  32. W-6B Interior RP Backflow Device for 3/4-inch to 2-inch Commercial Water Services (PDF)
  33. W-6C Exterior RP Backflow Device for 3-inch to 8-inch Commercial Water Services (PDF)
  34. W-6D Interior RP Backflow Device for 3-inch to 8-inch Commercial Water Services (PDF)
  35. W-7A Exterior DCV Backflow Device for 2-inch Fire Services (PDF)
  36. W-7B Interior DCV Backflow Device for 2-inch Fire Services (PDF)
  37. W-7C Exterior DCV Backflow Device for 4-inch to 8-inch Fire Services (PDF)
  38. W-7D Interior DCV Backflow Device for 4-inch to 8-inch Fire Services (PDF)
  39. W-8 Fire Hydrant (PDF)
  40. W-9 Valves (PDF)