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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 /> aL.•') ft-eft=P_feet <br /> 2. Calculate minimum mound size based on geometery: <br /> Y <br /> a. Determine depth of clean sand fill at upslope edge of rock <br /> layer: Separation /. D feet <br /> b. Multiply rock layer width by landslope to determine drop. <br /> in elevation; Slope Difference T1 a.& <br /> / O x 100 feet - <br /> c. Add depth of clean sand depth of clean sand for " k«sk.1)0. �. <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 °.-I�p.MM'" <br /> height at upslope edge of rock layer; <br /> /. Q ft + 1 ft + 1 ft =3, D feet <br /> d. Enter table on page bottom with landslope and upslope <br /> dike ratio. Select dike multiplier of 3.-a.'3 <br /> e. Multiply dike multiplier by upslope mound height <br /> to get upslope dike width: 3'y x 3 = 10 feet <br /> f. Add the depth of slope difference (2b) to the upslope <br /> height to get the downslope height <br /> .3.0 + , (o = 3•(, feet <br /> g. Enter table on page bottom with landslope and <br /> downslope dike ratio. j <br /> Select dike multiplier of z7.a <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 3.(o x s-z = 1-7_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 /> �j feet <br /> j. Total mound width is the sum of upslope dike R.( dih U io Dike w a <br /> width plus rock layer width plus downslope Roc L <br /> ' Rock Length 4+ <br /> dike width; <br /> U ft + J c;, ft + �_ft = - `1 feet upslope•DikeWidth•/.. i'Upslope'Dike Width <br /> 1(L <br /> k. Total mound length is the sum of upslope <br /> P <br /> dike width plus rock layer length plus <br /> DOW"s'° '� Wid`�' �-`- <br /> P Y g P <br /> upslope dike width; <br /> ?^ ft + ! ft + ft = G 1 feet <br /> .... .. .. .. . . .... .. .. . <br /> I G, } -+ J GJ G <br /> I- Total Length L <br /> Downslope UPSIOPC <br /> 3:1 4:1 5:1 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1 <br /> %slope <br /> 03.0 4.0 5.0 6.0 7.0 +.0 4.0 S.0 6.0 7.0 8A <br /> 1 3A9 4.17 5.26 6.38 753 2.91 3.85 4.76 5.66 6S4 7.41 <br /> 2 3.19 4.3S 556 6.82 8.14 2.83 3.70 456 S.36 6.14 6.90 <br /> 3 330 4S4 5.88 732 8.86 2.75 357 4.35 5.0B S.79 6AS <br /> 4 3A1 4.76 6.25 7.89 9.72 2.68 3.45 4.17 4.84 S.46 6.06 <br /> S 3S3 W 667 857 10.77 2.61 3.33 4.00 4.62 S.19 571 <br /> 7.1y�_._.938,_-_.. ._1207 _IE 3.23 3.85 4.41 4.93 SAI <br /> 7 3.80 SS6 7.69 1034 13.73 248 3.70 4.23 4.70 5.13 <br /> 83.9S S.88 8.33 1154 15.91 242 3.03 357 4.05 4.49 4.88 <br /> 9 4.11 6.25 9.09 13A4 18.92 236 1.94 3.45 3.90 430 4A5 <br /> 10 429 6.67 10.0 15.00 2333 2.31 286 333 3.75 4.12 4A4 <br /> 11 4A6 7.14 11.11 17.65 30.43 2.26 2.78 3.73 3.61 3.95 416 <br /> 12 4.69 7.69 1250 21A3 43.75 221 270 3.12 3.49 3.80 4.08 <br />