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Sky Dive City Drawing Date: 2/17/10 14:30 <br /> HYDRAULIC CALCULATION DETAILS <br /> HYDRAULIC FLOW LOSS <br /> QTY DESCRIPTION LENGTH C ID gpm psi TOTALS <br /> Hydr Ref W Required at Hyd Area 2 66 19.4 psi <br /> 1 4" Grvd 90 Ell 10' 120 4.026 66 0.0 <br /> 1 Pipe 4" 10x21 10' 120 3.260 66 0.0 <br /> 1 4" Grvd Shotgun Valve "90" 21' 120 4.026 66 0.0 <br /> 1 4" Flngd Butterfly Valve "A" 12' 120 4.026 66 0.0 <br /> Elevation Change 10'0" 4.3 <br /> Hydr Ref R1 Required at Base of Riser 66 23.9 psi <br /> 1 Pipe 6" DIx18 Cl 350 120' 140 6.338 66 0.0 <br /> 3 6" MJ 90 Ell 42' 120 6.065 66 0.0 <br /> 1 6" Flngd Back Flow Valve Watts "709 CHART LOSS 66 3.2 <br /> 1 Pipe 6" DIx18 Cl 350 40' 140 6.338 66 0.0 <br /> 1 6 "Gate Valve Kennedy "4071" PIV 3' 120 6.065 66 0.0 <br /> 1 6" MJ Tee 30' 120 6.065 66 0.0 <br /> Fixed Flow Outside Hose Stream 250 gpm <br /> 1 Pipe 6" DIx18 Cl 350 1000' 140 6.338 316 2.5 <br /> Hydr Ref R2 Required at City Supply 316 29.6 psi <br /> Water Source 77.9 psi static, 61.9 psi residual @ 1240 gpm 316 gpm 76.6 psi <br /> SAFETY PRESSURE 47.0 psi <br /> NOTE: Water Source has been adjusted to include a change of elevation of <br /> 2'0" flow test to point of connection <br /> Available Pressure of 76.6 psi Exceeds Required Pressure of 29.6 psi <br /> This is a safety margin of 47.0 psi or 61 % of Supply <br /> Maximum Water Velocity is 5.3 fps <br />