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i J .. <br />• <br />0=0.94 cfs <br />Outlet = 6 inch iron pipe <br />Op=t•1axlmum quantity for a 6 inch iron pipe in cfs <br />Vcvg=Rverage velocity in ft/sec <br />r=d/4 for round pipes flowing full <br />==ffe ad loss per foot of pipe = 0.0015 <br />C=constant for Hazin-Williams Formula for iron pipe = 100 <br />Vavg=Cry 5 0.001 CHazin-Williams Forrrnlla) <br />Vavg=3.77ft/sec <br />G!=','R=V(r'11'>=3.77ft/sec(0.25ft# ) <br />G:=~.74cfs <br />~'i':'1 A <br />G~te Opening For Average Retention Period of 24 Hours: <br />• 10 year-24 hour event = 0.45 ac-ft <br />'.=(0.45ac-ft # 43560ft/ac )/(49hours #3600sec/hour) <br />.-=0.llcfs <br />is z.d=3.29 feet, Haug=1.7 feet <br />L <br />:7vg=Hg=Kg CV/2G) <br />'._ (Havg#2#G g <br />~.vg=1.4 ft/sec <br />_=56 13% Opening = 1.5 inches <br />:ecKS O=V A; R=0/V=O.IIcfs/1.4 ft/sec=0.09ft = 1.2 inches <br />_- -'_E_ <br />~:.`c Opening For Average Retention Period of 24 Hours: <br />10 year-24 hour event =3.24 ac-ft <br />Q=C3.24ac-ft#43560ft/ac)/(49hours~3600secs/hour) <br />0=0.92cfs <br />• Head =6992.4 - 6996 = 6.4f t: Havg=3.2ft <br />Havg=Hg=Kg(VZ/2G) <br /> <br />