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<br />~J <br />APPENDIX 2.05.3-56 (Continued) <br />Culvert Velocity Calculations <br />Culvert No. 2 <br />Da = 1.5 Q = .18 cfs S = .05 Ft/Ft <br />Calculate Tail Water Velocity <br />Qn <br />Yo <br />(.18)(.024) _ .0043 = .22 Y ~ <br />Yp~ .05~ <br />Y ~ _ .02 <br />Yo = .23 <br />• ~ _ .15 <br />a <br />b = .0929 <br />• <br />.~ _ .0929 <br />R = .14 <br />y = 1n49 (R) ~ S ~ <br />V = ~~ (.14) ~ (.05) ~ <br />V = (62.08)(.27)(.22) <br />V = 3.75 fps <br />Da = pipe diameter in feet <br />Q =peak discharge (cubic ft/second) <br />S =slope <br />R =hydraulic radius <br />A =cross-sectional area <br />n =Manning coefficient (n) (.024) <br />- 237 - <br />(Rev. 5/86) <br />