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SEDCAD+ CULVERT SIZING UTILITY <br />Drainage PG-2 Downstream Culverts <br />• Design Discharge 12.200 cfs <br />Entrance Loss Coefficient = 0.9 <br />Pipe Length 30.000 feet <br />Pipe,Slope = 1.000 $ <br />Manning's n = 0.015 <br />Maximum Headwater = 2.500 feet <br />Tailwater Depth = 1.000 feet <br />Smallest Diameter Required to Pass Flow is 21 inches <br /> PERFORMANCE CURVES: <br /> Diameter: 15 inches <br /> Headwater Discharge Flow <br /> (ft) (cfs) Control Type <br /> 0.25 0.00 0 <br /> 0.50 0.00 0 <br /> 0.75 0.00 0 <br /> 1.00 0.00 0 <br /> 1.25 0.00 0 <br /> 1.50 4.71 inlet (Supercritical) 4 <br /> 1.75 5.61 Inlet 5 <br /> 2.00 6.39 Inlet 5 <br /> 2.25 7.09 Inlet 5 <br /> 2.50 7.69 Outlet 6 <br /> 2.75 8.24 Outlet 6 <br /> 3.00 8.74 Outlet 6 <br /> 3.25 9.22 Outlet 6 <br /> 3.50 9.67 Outlet 6 <br />• _=====3=?5=== ====10_11=== ==Outlet'_______________ ____6==== <br /> Diameter: 18 inches <br /> Headwater Discharge Flow <br /> (ft) <br />------------- (cfs) <br />------------ Control <br />------------------------ Type <br />--------- <br /> 0.25 0.00 0 <br /> D.50 0.00 0 <br /> 0.75 0.00 0 <br /> 1.00 0.00 0 <br /> 1.25 0.00 0 <br /> 1.50 5.78 Inlet Supercritical 3 <br /> 1.75 7.22 Inlet ~SUpercritical; 3 <br /> 2.00 8.42 Inlet 5 <br /> 2.25 9.50 Inlet 5 <br /> 2.50 10.47 Inlet 5 <br /> 2.75 11.35 Inlet 5 <br /> 3.00 12.18 Inlet 5 <br /> 3.25 12.95 Inlet 5 <br /> 3.50 13.67 Inlet 5 <br /> 3.75 <br />------------- <br />------------- 14.36 <br />------------ <br />------------ Inlet <br />------------------------ <br />------------------------ 5 <br />--------- <br />--------- <br /> Diameter: 21 inches <br /> Headwater Discharge Flow <br /> (ft) <br />------------- (cfs) <br />------------ Control <br />------------------------ Type <br />--------- <br /> 0.25 0.00 0 <br />• 0.50 <br />0.75 0.00 <br />0.00 0 <br />0 <br /> 1.00 0.00 0 <br /> 1.25 0.00 0 <br /> 1.50 6.74 Inlet (Supercritical) 3 <br /> 1.75 8.49 Inlet (Supercritical) 3 <br /> D-30 <br />