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Table TR-86-2-4 <br />• ' <br />SEDIMENTATION POND F - SPOIL SPRING DIVERSION DITCH DESIGN CALCULATIONS <br /> <br />Ditch F-3 Ditch F-3 (After Final Reclamation) <br />Peak Discharge 4.0 cfs 4.0 cfs <br />Ditch Slope 1.5% 1.5% <br />n VD I.5 <br />Rp =(1.49Sc•5 0.67 ft 0.67 ft <br />R design ~ Rpeak, Vd ~ Vp = 4.0 and stable (Max. velocity at 4.0 fps) <br />n = 0.035 <br />Area = Qp/Vp = 1.00 ft2 1.00 ft2 <br />• V-bottom Ditch Design with 2:1 Sideslopes (All Ditches): <br />d= A/Z= 0.71 ft 0.71 ft <br />Rd = 2 ZZ+I 0.32 ft 0.32 ft <br />Ditch Stable? "Stable" "Stable" <br />Ditch Configuration: - All ditches v-bottom Wt 2:1 Sideslopes <br />Excavated Depth 1.7 ft 1.7 ft <br />Design Flow Depth 0.7 ft 0.7 ft <br />Freeboard 1.0 ft 1.0 ft <br />lop Width 6.8 ft 5.8 ft <br />• <br />Exhibit 13 - 1(s) 09-22-86 <br />..~_. r-.a . . .~.Y....,a d~...• .._..Yaan4 iR: l`(~'1"~'y~atls.'~.L.dier._..» a ..L..-~.6." :}~a>- .la'r~3P"_r~__ ii <br />