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APPENDIX 2.05.3-10A (Continued) <br />• <br />Total Volume Calculations <br />Q10 total 13.9 acres x •20 inches •23 acre/ft <br />inc es oot <br />Q25 total 13.9 acres x .38 inches .44 acre/ft <br />inches oot <br />Q100 total 13.9 acres x .71 inches •g2 acre/ft <br />inches oot <br />Culvert Calculations <br />Assume sediment trap is full <br />Must be capable of conveying design storm <br />Q10 2.6 cfs - 12" - CMP <br />Q25 = 4.5 cfs - 15" - CMP <br />Q100 = 9.3 cfs - 18" - CMP <br />Assume inlet control <br />• Slope Length 220' <br />Slope Relief = 16' <br />Embankment 1.5' x 18" = 27" <br />plus 1 foot freeboard <br />Total depth above invert = 37" <br />CMP = <br />n = .024 <br />Pipe length = approximately 90' <br />Velocity Nomograph L -_ 90 = 90 <br />T60~o 0 x . <br />Hydraulic Radius .340 <br />Slope .05 ft/ft 5~ <br />Outlet Velocity = 8 fps <br />• <br />- 301 - (Rev. 5/86) <br />