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• <br /> G. DOWNSLOPE DIKE WIDTH , " ' ••- <br /> 1. If landslope is 3% or more,subtract rock layer width from <br /> adsorption width to obtain minimum downslope dike toe for <br /> absorption: <br /> • ot'•? ft- /0 ft= I 1 feet • <br /> . , • <br /> 2. Calculate minimum mound size based on geometery: <br /> a. Determine depth of clean sand fill at upslope edge of rock <br /> layer: Separation 1•ss-- feet . <br /> b. Multiply rock layer width by landslope to determine drop <br /> in elevation;Slope Difference F . <br /> • /o x s-- %+100= • S- feet <br /> c. Add depth of clean sand depth of clean sand for - <br /> -"n . 54.� -=�1 <br /> separation at upslope edge(2a) to depth of rock layer to• . . • .''''';. <br /> rock depth and the depth of cover to find the total mound °'="W <br /> height at upslope edge of rock layer; . <br /> /. 5 ft + l ft+ 1 ft = 3.. .feet • <br /> d. Enter table on page bottom with landslope and upslope <br /> dike ratio. Select dike multiplier of 3 .3 2 <br /> e. Multiply dike multiplier by upslope mound height <br /> to get upslope dike width: :z. S x 3.33 = I q feet <br /> f.Add the depth of slope difference(2b) to the upslope • <br /> height to get the downslope height <br /> 3.S + • S = 14 feet <br /> g. Enter table on page bottom with landslope and <br /> downslope dike ratio. • <br /> Select dike multiplier of S. 0 <br /> h. Multiply dike multiplier by downslope mound height , • <br /> to get downslope dike width: 4.o x s'o = 2.0 feet • . <br /> i. Compare the values of step G.1 and Step G.2.h. Select the • <br /> greater of the two values as the downslope dike width; , <br /> a o feet •J:J•,:•�/ct:',.:J:A.ii /;r::•.J.e:c,,:f tiJ .,h,•.r •:,•,. <br /> j. Total mound width is the sum of upslope dike �• >� IAN <br /> width plus rock layer width plus downslope {l{t'(: <br />