Standpipe Pump Discharge Pressure (NFPA 14)
Required pump discharge pressure = nozzle pressure + supply-hose friction (NFA CQ^2L) + appliance loss + elevation (0.434 psi/ft), with a high-rise flag. SOP and incident command govern.
Formula and source
PDP = nozzle pressure + supply-hose friction (NFA CQ²L) + appliance loss + elevation (0.434 psi/ft × highest outlet above pumper). Negative elevation (below the pumper) subtracts.
NFPA 14 (2024) §7 (Standpipe System Design) by name and section; National Fire Academy CQ²L hydraulics.
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