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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 /> .71,. 9 ft- i c ft = 17 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. '. feet <br /> b. Multiply rock layer width by landslope to determine drop <br /> in elevation; Slope Difference ::F <br /> 10 x s! % + 100 = • u feet <br /> c. Add depth of clean sand depth of clean sand for `_'"'°',•" '"°lamp- ae--w <br /> olha <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 Dl,. ik" <br /> height at upslope edge of rock layer; <br /> ). ), ft + 1 ft + l ft = 3.-.. feet <br /> • <br /> d. Enter table on page bottom with landslope and upslope <br /> dike ratio. Select dike multiplier of .yZ <br /> e. Multiply dike multiplier by upslope mound height <br /> to get upslope dike width: 7-7 x .'\:z, = > feet <br /> f. Add the depth of slope difference(2b) to the upslope <br /> height to get the downslope height <br /> ? + . U = L.r feet <br /> g. Enter table on page bottom with landslope and <br /> downslope dike ratio. <br /> Select dike multiplier of 5-. . <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: y .Q x S.<r r = -x-1 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 /> 7 L-1 feet .:.:•:::::::▪: : .,:::•::....-:•:....:....:::•::;•::;:::.:::.,::;:•:,:v... <br /> ,,.eM • ' •;"t . d ' ':j. Total mound width is the sumof upslope dike Roc Bed t:�1;o�.°.• ;":i..t,.....;: .;,:'i:�:::.. <br /> . <br /> width plus rock layer width plus downslope <br /> dike width; '�' ' '�''� �.. ..�.......•' •'�•' . ��: <br /> 'c' ft + /0 ,ft + Du ft = 4Q. feet u 1 oi,Y;:dth-`• . .pe ' d1 <br /> p,� ii io ou«wiail, <br /> k. Total mound length is the sum of upslope <br /> dike width plus rock layer length luon;;iaptii( wi▪ditiy t <br /> upslos <br /> pe ;:� •:;.: :: .{;.▪ .{ti{ti{:{. •;' <br /> ps ope dike width; .... .. ::5......... ;: :••;;? {;• <br /> : <br /> < , ft + (_, ft + �/ ft = cey feet .Total Length -."1 <br /> 1 <br /> I. .4 'f',,..- -1 X1 '.4 /1 (c+ /1 S. <br /> Uownslopc Uppsiope <br /> 3:1 4:1 . 5:1 &1 7:1 3:1 4:1 51 6:1 7:1 4:1 <br /> %.lope <br /> 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 1 3.09 4.17 5.26 6.38 753 2.91 3.85 4.76 5.66 654 7.41 <br /> 2 3.19 4.35 556 6.82 8.14 2.83 3.70 434 5.36 6.14 6.90 <br /> 3 3.30 454 5.88 7.32 8.86 2.75 3.57 4.35 5.08 3.79 6.45 <br /> 4 3.41 4.76 6.25 7.89 9.72 268 3.45 4.17 4.84 5.46 6.06 <br /> • <br /> 5 333 5.00 6.67 857 10.77 2.61 333 4.00 4.62 5.19 5.71 <br /> 6 3.66 5.26 7.14 9.38 12.07 234 3.23 3.85 4.41 4.93 5.41 (---- <br /> 7 <br /> '7 3.80 556 7.69 1034 13.73 2.48 .3.12 3.70 4.23 4.70 5.13 <br /> _8 3.95 (. 5.88 8.33 1154 15.91 i-2.42'' ( 3.03 357 4.06 4.49 4.88 <br /> 9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4.65 <br /> 10 4.29 6.67 10.0 15.00 23.33 2.31 2.86 333 3.75 4.12 4.44 <br /> 11 4.48 7.14 11.11 17.6.5 30.43 2.26 2.78 3.21 3.61 3.95 4.26 • <br /> 12 4.69 7.69 1250 21.43 43.75 7.71 2.70 3.12 3.49 3.80 4.08 <br />