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How should fire hose connection and station Flow and Pressure Demand be Addressed in combined system Calculations

Question asked by r.hedek on Jan 4, 2020
Latest reply on Jan 6, 2020 by nocivus



For a combined Sprinkler/Stand pipe System- Completely  Sprinklered , and fire hose connected to  wet sprinkler riserin accordance with which am verifying the system Fire Pump Size .


  1.  Shall i consider the Flow Demand of the Hose Station 1-1/2" (40mm) 50-100gpm +the Hose Connection 2-1/2" (65mm) 250gpm while running the calculation on the software.
  2. Shall I consider in my calculations, Maintaining the Pressure Demand at the most remote Fire Hose Connection 2-1/2" (65mm) which is 100Psi and at the Hose Station -1/2" (40mm) which is 65psi ? or just maintain the minimum residual pressure on the sprinklers ?

Appreciating your kind support .