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1 <br /> Orono 1-ugh School 0,--awina Dote:02/23/18 4/30/18 11 :20 <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 4 173 46.7 psi <br /> 1 4" Grvd Butterfly Valve Tyco BFV- 5' 120 4 .026 173 0.0 <br /> 1 " Thrd Rack Flow Valve WATTS 774 CHART LOSS 177 2.1 <br /> Elevation Change -1110" -5. 1 <br /> Fixed Flow Inside Hose Stream 0 gpm <br /> Hydr Ref R1 Required at Base of Riser 173 43.7 psi <br /> 1 Pipe 6" DIx18 America DI 350 300' 140 6.338 173 0.3 <br /> Fixed Flow Outside Hose Allow. 250 gpm <br /> Hydr Ref R2 Required at City Supply 423 44 .0 psi <br /> Water Source 58.7 psi static, 52.7 psi residual @ 1190 gpm 423 gpm 57 .8 psi <br /> SAFETY PRESSURE 13.8 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 57.8 psi Exceeds Required Pressure of 44.0 psi <br /> This is a safety margin of 13.8 psi or 24 % of Supply <br /> Maximum Water Velocity is 9.8 fps <br />