Transcription of V. DESIGN OF WATER MAINS - Charlotte, North Carolina
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V. DESIGN OF WATER MAINS - Charlotte, North Carolina
V. DESIGN OF WATER MAINS A. Fire Flow And Residual Pressure Requirements When fire protection is to be provided, system DESIGN should be such that fire flows and facilities are in accordance with the requirements of the State Insurance Services Office. The minimum fire flow shall be 1000 GPM with a minimum residual pressure of 20 PSI. Minimum residential service flow shall be 10 GPM at 20 PSI residual pressure (as measured at the meter). Where these requirements cannot be met, contact CMUD Public Service Engineer for guidance. B. Hydraulic DESIGN WATER distribution systems shall be designed to provide adequate flow and pressure for both domestic supply and fire protection. Transmission MAINS 12-inches in diameter and larger shall be designed to deliver maximum daily DESIGN flow with a head loss not to exceed 5' per 1000'.
mains. Also, air releases shall be provided at high points on 6-inch and 8-inch water mains where air cannot be adequately released from the main through service connections. Manual air releases shall be according to current standard details. On pumped lines or in any other application where the potential for water column
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