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APPENDIX 2.05.3-5A (Continued) <br />• <br />Culvert No. 3 <br />CMP Diameter = 1.5 feet <br />n = .024 S = .05 <br />_ .41 cfs <br />Qn <br />Yoh <br />(.41.)(.024) <br />Yo~05 <br />Yoh _ .04 <br />Yo = .29 <br />~ _ .1662 <br />R = .1662 x 1.5 = .25 <br />• V = 1n49 (R)~ (S ~) <br />Y = ~4 (.25) ~ (.22) <br />V = 5.47 fps <br />Q = discharge (cfs) (Manning formula) <br />D = diameter of pipe (feet) <br />A = diameter of flow (feet) <br />So =slope (ft/ft) <br />n = Manning coefficient <br />R = hydraulic radius (feet) <br />V = velocity (feet per second - fps) <br />Calculations based on Wright McLaughlin Engineers, 1969, Drainage Criteria <br />Manual (Table 4.1) <br />• <br />- 225 - (Rev. 5/86) <br />