| Capital Projects Home Page |
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| Division 2 Sitework |
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| 2-9 | Water Distribution |
| A. | Water Piping Design |
| 1. | After demands are determined, size water lines on the basis of friction loss. Do not exceed 10% of initial pressure at full demand or 7.5 feet per second velocity with a minimum pressure of 60 per square inch for building services. |
| 2. | Show valves at all services from mains and at other points t minimize disruption of building operations. Valves should be located at the building exterior and where mains enter the building. |
| 3. | Use separate cold water services for domestic and fire where it is from the University system. |
| 4. | Use two pressure zones where the pressure at the lowest point of use will exceed 80 per square inch to maintain 35 per square inch at the highest point of use. |
| 5. | Show a thrust block table on the drawings. See Appendix, Typical Water Service and Piping Systems. |
| 6. | Fire protection service from single building service (campus). |
| a. | Hose Racks: |
| i. | Single pressure zone buildings: Service from the main, after building meters and regulators. |
| ii. | Two pressure zone buildings: Service for the high pressure zone taken from the main high pressure building supply, after the building meters. Service for the low pressure zone taken from the reduced pressure, after building meters and regulators. |
| iii. | Where hose racks are installed downstream of building water meters, use high-flow-bypass type meters with backflow preventer. |
| iv. | Provide a flow switch to activate an alarm at each hose rack. |
| b. | Fire Sprinklers |
| i. | Connect the fire sprinkler service for both single and two pressure zone buildings to the main building supply, ahead of building meters and regulators. |
| ii. | Provide separate service from exterior mains for buildings served by the utility company (off campus). |
| iii. | Where a building has fire sprinkler piping, hose racks shall be supplied from the sprinkler piping system. |
| iv. | The University will arrange for and pay for domestic and fire protection water service to off-campus buildings served by the utility company. Furnish size and pressure requirements to Capital Projects (CP). |
| B. | Disinfection Of Water Distribution Systems |
| Specify provisions for sterilizing new lines. See Appendix. |
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