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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 /> _o ft =�_ feet <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, feet <br /> b. Multiply rock layer width by landslope to determine drop tk"c- <br /> in elevation; Slope Difference tl.•�-�+ <br /> )o x 6 %-f- 100 = . (, feet <br /> Updsp.WM%A <br /> c. Add depth of clean sand depth of clean sand for -&» -� -b«56p Mff �* <br /> a.&M W <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 <br /> height <br /> height at upslope edge of rock layer; <br /> LS' ft + 1 ft + 1 ft = 3. feet <br /> d. Enter table on page bottom with landslope and upslope <br /> dike ratio. Select dike multiplier of 3 . -.j <br /> e. Multiply dike multiplier by upslope mound height . <br /> to get upslope dike width: a,_; x = _I I feet <br /> f. Add the depth of slope difference (2b) to the upsl;pe <br /> height to get the downslope height <br /> 3, .5 + . c, = y . 1 feet <br /> g. Enter table on page bottom with landslope and <br /> downslope dike ratio. <br /> Select dike multiplier of S- <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 4. I x C.%L = aa, feet <br /> i. Compare the values of step G.1 and Step G.21. Select the <br /> greater of the two values as the downslope dike width; <br /> a feet <br /> j. Total mound width is the sum of upslope dike Rock died W dW;•I:r,).-- <br /> width plus rock la <br /> oc layer width plus downslope �'`' ''�'�"•�` ' <br /> dike width; KKk lkd t.eng h <br /> J.l-. 10 3_ft :feet upsl°rbik`ew;dtti_'iL' UpslopcDike Width <br /> t� <br /> k. Total mound length is the sum of upslope <br /> g <br /> dike width plus rock layer length plus <br /> 1�Wns1°pe''txke'w <br /> P ldth <br /> P Y g <br /> upslope dike width; <br /> ► ► ft + s_ ft + - ft = -)2 feet <br /> _ Total Length_2 <br /> Oowns opc Uiopc <br /> 3:1 4:1 S:1 6:1 7:1 3:1 4:1 sa &1 7:1 8:1 <br /> %dope <br /> 0 3.0 4.0 S.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 1 3M 4.17 5.26 6.38 7.53 2.91 US 4.76 5.FA 6.54 7.41 <br /> 2 3.19 4.15 S.56 6.82 8.14 2.113 3.70 4.54. S.36 6.14 6.90 <br /> 3 330 4.5.4 S.88 7.32 6.86 2.75 3S7 4.35 SA 5.79 6.45 <br /> 4 3.41 4.76 6.25 7.89 072 2.68 3.45 4.17 4.M 5.46 6.06 <br /> 5 353 5.00 6.67 8.S7 10.77 2.61 3.33 4.00 4.62 5.19 5.71 <br /> -6 ___ . ... 3.66- - Ci:26� _- 7.14 9.18 12.07 2.54, 3.KS 4.41 4.93 5.41 <br /> 7 3A0 5.56 7.69 10.34 13.73 2.48 3.12 3.70 4.23 4.70 S.13 <br /> 8 3.95 5.88 8.33 1153 15.91 2.42 3.03 3S7 4A 4.49 4.88 <br /> 9 4.11 6.25 9.09 13.01 18.92 2.36 2.94 3.45 3.00 4.30 4.65 <br /> 10 4.29 6.67 10.0 1500 :::3 2.31 2.86 333 3.75 4.12 4.44 <br /> 11 4.48 7.14 11.11 17.65 3043 2.26 2.78 3.23 3.61 3.95 416 <br /> 12 469 7.69 1750 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4.08 <br />