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1 <br /> ()Lori() High School Drawing Date: 02/23/18 4/30/18 11 :21 <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 3 225 47 . 6 psi <br /> 4" Grvd Butterfly Valve Tyco BFV- 5' 120 4 .026 225 0. 1 <br /> 1 4" Thrd Back Flow Valve WATTS 774 CHART LOSS 225 2.3 <br /> Elevation Change -11 ' 10" -5. 1 <br /> Fixed Flow Inside Hose Stream 0 gpm <br /> _. . .. <br /> Hydr Ref R1 Required at Base of Riser 225 44 .8 psi <br /> 1 Pipe 6" DIx18 America DI 350 300' 140 6.338 225 0.4 <br /> Fixed Flow Outside Hose Allow. 100 gpm <br /> Hydr Ref R2 Required at City Supply 325 45.2 psi <br /> Water Source 58.7 psi static, 52. 7 psi residual @ 1190 gpm 325 gpm 58.1 psi <br /> SAFETY PRESSURE 12.9 psi <br /> NOTE: Water Source has been adjusted to include a change of elevation of <br /> 1 ' 6" flow test to. point of connection <br /> Available Pressure of 58. 1 psi Exceeds Required Pressure of 45.2 psi <br /> This is a safety margin of 12.9 psi or 22 % of Supply <br /> Maximum Water Velocity is 9. 6 fps <br />