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Standard Ditch Design <br />.Page 3 <br />~~ MINIMl1M DITCH DESIGNS <br />Access Roads - 1.0 Ft. <br />< -- 2'. <br />~~ <br />/ .~ <br />R __ ~ (2) (1) _ 1 = 0.35 Ft. <br />2(12 + 12) ~ 2.828 <br />Vel _ 1.486 (.35) 2/3 (0.005) '~ 1.75 Ft/Sec <br />0.030 <br />A = 1.0 Ft 2 <br />Q = (1.75) (1.0) = 1.75 CFS <br />Q Design = 1.75 - 1.3 = 135 CFS <br />Haul Roads - 2.0 Ft <br />~~~ 4 / ~~ <br />a' <br />-~ ~ J <br />_ '~ (4) (2) = 4.00 = 0.71 <br />R 2 (22 + 22~} ~ 5.656% <br />Vel = 1.486 (0.71) 2/3 (0.005) '~ = 2.78 Ft/Sec <br />0.030 <br />A` 4.0 Ft2 <br />Q = (2.78) (4) = 11.12 CFS <br />Q Design 11.12 = 1.3 8.55 CFS <br />