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SMITH AUTO SHOP <br />N13 JOE 9J.133C <br />PAGE 1 <br />DETENTION CALCULATIONS <br />I. THE EXISTING EAST b'LO{9 CONTROL STRUCTURE HAS A 3].3/16 <br />INCH DIAMETER ORIFICE. USING THE AS-BUILT INFORMATION <br />FOR WESTERIQ SIZZLIN' STEAK HOUSE PREPARF.D BY KEGEL & <br />ASSOCIATES, INC., DETERMINE THE ALLOWnBLE OUTFLOW, <br />a. AREA = nDz/4 = 0.0793 FE�T <br />..BAD IS 670 - 667.5 = 2.5 FEET <br />4 = CA (2gh),/ _ .62 (.0793)[2('32.212.S1✓ <br />Q = 0.524 CFS <br />THEN Qo = QjACfut <br />�fut - �•9�•95)(1.15) + ,3(.05)(1.15)]/1.15 <br />�fut = 0.87 <br />b• Qo = 0.629/1.15(.87) = 0.6237 CFS <br />FOR 25 YEAR DESIGN, BASF,D ON Y&W METHOD USED IN <br />1978 BY KEGEL & ASSOCIATES, INC., FOR THE ORIGINAL <br />DESIGN. <br />T = -25 + (2706/goj,/ <br />us = (4329T/T + 25 - 40 QoT <br />T= 40.86 AND VS = 1666.16 <br />