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National Fire Safety Code 103 regulates that all operating sprinkler in design area must be discharged 1 bar or more pressure and release 80 lpm or more flow rate as minimum criteria. NFSC103 also provides that the number of operating sprinkler in design area is 10, 20, 30 according to the building classification and the total flow rate is 800, 1,600, 2,400 lpm depending on 80 lpm per sprinkler. If sprinkler system is designed as above provisions, the pressure and the flow rate accordingly become smaller than the minimum criteria about 50 % sprinklers. It results in serious consequence that the purpose of sprinkler system as initial fire reaction equipment is failure. In order to solve these problems, It is desirable that Performance-based fire protection design, hydraulic calculation, is carried out to all sprinkler system.

A Study on the Problem of Pressure and Flow Rate by Prescriptive Code Based Design of Fire Sprinkler System