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S & K Properties Drawing Date: 8/ 2/11 21: 4 <br /> ' ' HYDRAULIC CALCULATION DETAILS <br /> HYDRAULIC FLOW LOSS <br /> QTY DESCRIPTION LENGTH C ID gpm psi TOTALS <br /> Hydr Ref W/TOR lst Flr Required at Hyd Area 1 280 35.5 psi <br /> 1 2-1/2" Grvd 90 E11 6 ' 120 2 .469 280 1.5 <br /> 1 Pipe 2-1/2" 1Ox21 CSC 10 ' 120 2 .635 280 1.9 <br /> 1 2-1/2" Fingd Back Flow Valve Ames CHART LOSS 280 2 .1 <br /> Elevation Change 10 '10" 4 .7 <br /> Hydr Ref BOR Required at Base of Riser 280 45.7 psi <br /> 1 Pipe 4" DIx18 Class 350 10' 140 4.300 280 0.1 <br /> 1 Pipe 4" PVx20 DR 14 25 ' 150 4 .457 280 0.2 <br /> 2 4" MJ 90 E11 12 ' 120 4 .026 280 0.3 <br /> 1 4�� Fingd Gate Valve CSC "722U" 2 ' 120 4. 026 280 0.0 <br /> Fixed Flow Outside Hose Allow. 250 gpm <br /> Hydr Ref SRC Required at Source 530 46 .5 psi <br /> water Source 62.0 psi static, 10. 0 psi residual @ 1800 gpm 530 gpm 56 .6 psi <br /> SAFETY PRESSURE 10.1 psi <br /> Available Pressure of 56.6 psi Exceeds Required Pressure of 46.5 psi <br /> This is a safety margin of 10.1 psi or 18 a of Supply <br /> Maximum Water Velocity is 21.4 fps <br />