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ORIFICE DESIGN: Q = Ca 2gh <br />r where Q = Discharge, cfs <br />C = Coefficient of discharge <br />a = area of orifice, square feet <br />g = acceleration of gravity, ft. per sec.Z <br />h = head on the center of orifice, ft. <br />for C = 0.62 <br />q = 0.32 <br />g = 32.2 <br />h = 4.47 ft. <br />q 0.320 <br />a C 2gh (0.62) (2)(32.2)(4.47) <br />a = 0.030 sq. ft. <br />a = 4.38 sq. in. <br />since a = aR' <br />.. Radius = R _ �/_ = 1.18 inches <br />V n <br />.. D = 2.36 inches <br />-4- <br />n r"irrr I/jn.O1 <br />1 <br />J <br />