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• <br />L J <br />• <br />APPENDIX 2.05.3-11A (Continued) <br />Q = 10393 (2)(.27) ~ .07 ~ <br />Q = (45.15(2)(.42)(.26) <br />Q = 9.86 cfs <br />Design Flow 9.3 cfs <br />Drainage Parabolic Channel <br />To Width 4' <br />Depth 6" (.5) <br />Velocity: V = 1n49 R ~ S 2 <br />Use nomogram = "Open Channel Hydraulics" (Chow, 1959) <br />S = .07 <br />n = .045 <br />Velocity = 6.99 fps <br />R~=.425=2.6 <br />S = Slope <br />- 309 - <br />(Rev. 5/86) <br />