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pressureK-FactorNodeFLOWPipe SIZEFittings Pipe Eq. LossPt20.745.6FLOW ADJUSTMENTS b2b4b5ActFPfNodeFLOWPipe SIZEFittings Pipe Eq. PRESSUREK-FACTORGPMqtyELTEE rTEE xRducothrmftPSIQanomL120HAZEN WILLIAMS fric. NodeFLOWELEVATION (Ft)PIPE SIZE (in)Fittings (Equiv. 125mm1.0491 sprinkler flow = * 0.15 gpm/sq.ft 1 1/432mm1.38Q = 36.44 GPM1 1/240mm1.61P = (Q/K)^2P=(14.52/8)^2250mm2.067P = 20.74 PSI2 1/265mm2.469380mm3.0684100mm4.0266150mm6.065Flow requirements to meet 7psi pressure at end sprinklerSCHEDULE 10NPSIDQ = k p1 1/432mm1.442Where,1 1/240mm1.682Q = Flow from individual sprinkler250mm2.157k = Sprinkler k-factor (see NFPA-13, (2007) Table 6.2.3.1)2 1/265mm2.635p = Pressure from an individual sprinkler.380mm3.264100mm4.26Q = 8 x 7 psi6150mm6.3578200mm8.249Q = 21.17GPMSince the sprinkler requires 21.17 gpm to meet the 7 psi requirement and 20.74 gpm to meet the density requirement, the flow at the end sprinkler will be 20.74 GPMQa = the flow added at this pointQt = the total flow in this pipe segmentC-factor = Pipe roughness factor black steel pipe = 120Pf = the pressure required to push the water Through this segment ofpipe. 15 gpm/sq.ft over 1500 sq.ftįrom NFPA 13: protection areas & maximum spacingSprinkler protection area for Hydraulically calculated = 400 sq.ftQ = A * Density1 sprinkler flow = 400 sq.ft * 0.15 gpm/sq.ft Q= 60 GPMACTUAL SPRINKLER PROTECTION AREASCHEDULE 40Q = A * DensityNPSIDA =. Sheet1HYDRAULIC CALCULATION for Sprinkler Systemįrom NFPA 13 Density curve (Figure 11.2.3.1.1)assumption.