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• <br />WEST MINE DIVERSION - WEST LIP16 <br />Ditch Sizing <br />1. Q = 15.3 cfs <br />2. Cross Section - shot June 11, 1981 <br />6' 2.1' <br />2.5' <br />Total area A = (6 ~ 2.5) y (2.5 P 2.1) = 10.1 ft2 <br />3. If V = g = 15A3 and V = ln5 (P) 3 (S)-s <br />• v = 0:05 (P)Z/ (o.lzs)z <br />then set A until V's are equal by trial and error. <br />They converge when A = 2.3 ft2 then <br />6' 2.1' <br />2.5' 1.3' freeboard. <br />C J <br />