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SEDCAD+ CULVERT SIZING UTILITY <br />Culvert 63 <br />I <br />Design Discharge = 2.840 cfs <br />Entrance Loss Coefficient = 0.7 <br />Pipe Length = 50.000 feet <br />Pipe Slope = 2.000 $ <br />Manning's n = 0.024 <br />Maximum Headwater = 1.500 feet <br />Tailwater Depth = 0.000 feet <br />Smallest Diameter Required to Pass Flow is 12 inches <br />PERFORMANCE CURVES: <br />Diameter: 9 inches <br />• <br />Headwater Discharge Flow <br />(ft) <br />------------- (cfs) <br />------------ Control <br />------------------------ Type <br />--------- <br />0.15 0.19 0 <br />0.30 0.39 0 <br />0.45 0.58 Outlet (Subcritical) 1 <br />0.60 0.78 Outlet (Subcritical) 1 <br />0.75 0.97 Outlet (Subcritical) 1 <br />0.90 1.07 Outlet (Subcritical) 1 <br />1.05 1.15 Outlet (Subcritical) 2 <br />1.20 1.23 Outlet (Subcritical) 2 <br />1.35 1.31 Inlet (Supercritical) 3 <br />1.50 1.38 Inlet (Supercritical) 3 <br />Diameter: 12 inches <br />Headwater Discharge <br />(ft) (cfs) Control <br />Flow <br />Type <br />--------------- <br />0.15 --------- <br />0.25 --------- <br />Outlet ----------------- <br />(Subcritical) -------- <br />1 <br />0.30 0.49 Outlet (Subcritical) 1 <br />0.45 0.74 Outlet (Subcritical) 2 <br />0.60 0.98 Inlet (Supercritical) 3 <br />0.75 1.34 Outlet (Subcritical) 2 <br />0.90 1.71 Outlet (Subcritical) 2 <br />1.05 2.08 Outlet (Subcritical) 1 <br />1.20 2.43 Inlet (Supercritical) 3 <br />1.35 2.78 Inlet 5 <br />1.50 3.05 Outlet 6 <br />* (Transition Region - Data may need to be smoothed.) <br />Diameter: 15 inches <br />Headwater Discharge Flow <br />_____{ft)____ ___(cfs)______ _COntrol _____ __Type___ <br />0.15 0.28 Outlet (Subcritical) 1 <br />0.30 0.57 Outlet (Subcritical) 2 <br />0.45 0.85 Inlet (Supercritical) 3 <br />Exhibit 18 -3150- Revised 6/19/92 <br />