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Drainage Ditch - Haul Road <br />McClane Canvon to Central Facilities <br />C~ <br />• <br /> <br />Size the diversion ditch based upon maximum discharge at the cul- <br />vert for a 10-year, 24-hour storm. <br />Channel Configuration: ~ <br />A = 2d` <br />~ f // Pca = 4.47d <br />1 ~_ ~~1 R = 0.447d <br />2 2 V = <br />2(d)~ <br />d = 4/58.07 S' n = 0.03 <br />S = Slope <br />F = Freeboard <br />All ~~alues not calculated herein are from "Culvert Sizing'' charts <br />(contained in Appendix D) and Access Road or haul Road; Flan and <br />Profile dracaings. <br />Area K - Sta 44 + 00 <br />Avg. S = 0.033 V = 5 2 = 5.27 fps <br />Q = 4.95 cfs 2(0.69) <br />F = 1 + 0.025 vd ~3 = 1.12 ft. <br />d =115/58.07 (0.033) <br />d = 0. 69 ft. <br />Area J - Sta 40 + 00 <br />S = 0.018 <br />Q = 6.27 cfs <br />d = 7/58.07 (0.018)2 <br />d = 0.95 ft. <br />Area I - Sta 31 + 00 <br />S = 0.018 <br />Q = 16.77 <br />d = 17/58.07 (0.018)2 <br />d = 1.48 ft. <br />D = d. + F = 1.81 ft. <br />V = 7 2 = 3.50 fps <br />2(0.95) <br />F = 1 + 0.025 vd 1/3 = 1.10 ft. <br />D = d + F = 2.05 ft. <br />V = --17 2 = 3.90 fps <br />2(1.4s> <br />F = 1 + 0.025 vd 1/3 = 1.11 ft. <br />D = d + F = 2.59 ft. <br />12/13/83 <br />