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• <br />SEDCAD+ RIPRAP CHANNEL DESIGN <br />----------------------------- <br />PROSPECT POND EMERGENCY SPILLWAY RIPRAP <br />INPUT VALUES: <br />Shape <br />Discharge <br />Slope <br />Sideslopes (L and R) <br />Bottom Width <br />Freeboard <br />RESULTS: <br />TRAPEZOIDAL <br />10.31 cfs <br />33.00 0 <br />2.50:1 2.50;1 <br />15.00 feet <br />1.0 ft <br />Steep Slope Design - FADER Method <br />• <br />Depth <br />with Freeboard <br />Top Width <br />with Freeboard <br />Velocity <br />Cross Sectional Area <br />Hydraulic Radius <br />Manning's n <br />Froude Number <br />Dmax <br />D50 <br />D10 <br />0.15 ft <br />1.15 ft <br />15.74 ft <br />20.74 ft <br />4.53 fps <br />2.28 sq ft <br />0.14 ft <br />0.052 <br />2.10 <br />0.313 ft ( 3.75 in) <br />0.250 ft ( 3.00 in) <br />0.083 ft ( 1.00 in) <br />SEDCgD* CHRNNEL DESIGN <br />PAOSPECS POND ENERCENCY SPILL11/iY AIPRAP <br />7 <br /> <br />d <br />Riprap - Steep Slope Design - PRDER Method <br />D <br /> r/ Freebcard: <br />Discharge = 10.31 c£s Depth,<d) = 0.13 CD = 1.15) ft <br />Bottoi+ (b) = 13.00 ft Yop r;dth (t) = 13.74 (T = 20.74) ft <br />Side slopes (Z) <br />B <br />d Sl = Z.3:1C L) <br />0 2.3:1(R) Velocity <br />H <br />d <br />l <br />R <br />di = 4.33 <br />14 <br />0 fps <br />e <br />ope = 33.0 <br />% y <br />rau <br />ic <br />a <br />us = . ft <br />Nannins s n = 0.832 Froude nuwber = 2.10 <br /> Dnax = 0.31 ft < 3.73 in) <br /> D30 = 0.23 ft C 3.00 in) <br /> D10 = 0.08 fL C 1.00 in) <br />