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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 /> .(,.7 ft- / 0 ft = 1 9 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. S feet . <br /> b. Multiply rock layer width by landslope to determine drop ,,, • <br /> in elevation; Slope Difference :.:::...:__::: :::::E 16r Nod <br /> / 0 x if %+ 100 = . 4 feet <br /> WhIA <br /> c. Add depth of clean sand depth of clean sand for ""`°' <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 at upslope edge of rock layer; • <br /> 1 .S ft + 1 ft + l ft = 3.r feet <br /> d. Enter table on page bottom with landslope and upslope <br /> dike ratio. Select dike multiplier of 3_L-1 S <br /> e. Multiply dike multiplier by upslope mound height <br /> to get upslope dike width: 3. a' x 7,.1-1 c = 1 a feet <br /> f. Add the depth of slope difference(2b) to the upslope <br /> height to get the downslope height <br /> 3•S + •`I = -3 `i feet <br /> g. Enter table on page bottom with landslope and <br /> downslope dike ratio. <br /> Select dike multiplier of y .' L. . <br /> • h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width:4.11- x ?.c' = t 9 ,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 /> lei feet <br /> Total mound width isupslope dike R« i i4iVii th 'tii..1! "'opal:- '•j' <br /> j• the sum of u slo aili'•'i'�'''' �' : �:;:: <br /> width plus rock layer width plus downslope . ''1'"'`'"'�` '•''''''•'"'..`''`•• ; ;''``'j'�:__`` <br /> dike width; P r+ .•'d•'.. . .. .. .. .. . .`w`"•!, .,:. <br /> / ,,, ft + /o ft + l c3 ft = y 1 feet upslope Duke ii►iati;:'*i 5' up:iopelit.lie Wicit <br /> k Total mound length is the sum of upslope <br /> ; op ' i `' <br /> otre bike width plus rock layer length plus <br /> upslope dike width; <br /> ft + 5 c ft + / )., ft = '7c7 feet I._ ... <br /> I c, -1 5 S "1 I r) �I 3 Taal Length L <br /> L wnslopc Upslopc <br /> 3:1 4:1 5:1 6:1 r 7:1 3:1 4:1 5:1 6:1 7:) 8:1 <br /> % <br /> 0 3.0 4.0 5.0 6.0 7.11' 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 1 3.09 4.17 5.26 6.38 7.53 2.91 3.65 4.76 5.66 654 7.41 ' <br /> 2 3.19 4.35 556 692 6.14 2.83 3.70 • 4.54 . 5.36 614 6.90 <br /> 3 3.30 4.54 5.88 7.32 6.86 275 3.51. 4.35 5.08 5.79 6.45 <br /> 4 3.41 _ (4.7C 6.25 7.89 9.72 7.68 (3.451 4.17 4.94 5.46 6.06 <br /> 5 357 5.00 667 8.57 10.77 2.61 3.33 4.00 4.62 5.19 5.71 <br /> 6 3.66 5.26 7.14 9.39 12.07 2.54 3.23 3.85 4.41 4.93 5.41 <br /> 7 390 536 7.69 10.34 13.73 2.48 3.1I 3.70 4.23 4.70 5.13 <br /> 8 3.95 5.98 8.13 1134 15.91 2.42 3.03 337 4.115 4.49 4.89 <br /> 9 4.11 625 9.09 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4.65 <br /> 10 429 667 10.0 15.00 23.33 2.31 2.98 3.33 3.75 4.12 4.41 <br /> 11 4.48 7.14 11.11 17.65 3043 2.26 2.78 3.23 3.61 3.95 426 <br /> 13 469 7.44 1230 2143 43.73 2.21 2.70 3.13 3.40 390 4.08 • <br />