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DOWNSLOPE DIKE WIDTH <br />If landslope is 3% or more, subtract rock laver width from <br />adsorption width to obtain minimum downslope dike toe <br />zv ft -1g, ft= /t, ft <br />Calcul..: mound height at edge of rock laver on downslope <br />side; <br />a. Determine depth of dean sand fill at upslope edge of rock <br />layer: Separation +, s feet <br />b. Multiply rock layer width by landslope to determine drop <br />in elevation; Slope Difference <br />/0 x 'I % + 100 ft <br />c. Add depth of clean sand depth of clean sand for <br />separation at downslope edge to depth of rock layer to <br />depth of soil backfill to get mound height at downslope <br />edge of rock la er; <br />f�Z h + ft + ! ft+ft = ft <br />d. Enter table on page E-18 with landslope and downslope <br />dike ratio. Select dike multiplier of S/ . , <br />e. Multiply dike multiplier by downslope mound height <br />to get downslope dike width: 3 - q- x S.4-4'= Z-2� ft <br />g. 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 />Z 2 feet <br />h. Calculate upslope dike width using upslope mound <br />height and upslope dike multiplier from page E-18; <br />3.2 x3.lt = to ft <br />i. Total mound width is the sum of upslope dike width plus <br />rock layer width plus downslope dike width; <br />l0—h+ /O ft+ Zt ft= A— ft <br />E-20 <br />I1d 1.....nw• u b <br />3. If landslope is 2.9 percent or less, basal width includes both the <br />upslope and downslope dike widths. <br />a. Calculate downslope dike width using steps G.2.a. <br />through G.21; feef <br />b. Calculate upslopedi idth using upslope mound <br />height and dike multi tier from Page E-18; <br />x \+1 <br />ft <br />c. Add downslope di a upslope dike width to rock <br />layer width <br />ft + fft = ft , <br />t-175 <br />)1 <br />•1 <br />%TU ope <br />SI <br />41 <br />71 <br />31 <br />/.1 <br />Upliope <br />11 <br />►1 <br />71 <br />el <br />• ".1). <br />C <br />10 <br />40 <br />s0 <br />60 <br />70 <br />)J <br />40 <br />1D <br />60 <br />70 <br />eD <br />)D/ <br />417 <br />f>• <br />•3• <br />7y <br />191 <br />If <br />•7• <br />1" <br />LU <br />7A1 <br />1 <br />111 <br />tz <br />15• <br />•C <br />111 <br />ID <br />"0 <br />•3/ <br />13• <br />•N <br />♦A <br />IA <br />•J• <br />sO <br />7» <br />Is>< <br />17s <br />IV <br />•Jl <br />1a <br />Sr <br />•.•1 <br />1.1 <br />•7• <br />•E <br />711 <br />171 <br />IY <br />JAI <br />4-" <br />•M <br />r S <br />•0• <br />S <br />7s1 <br />100 <br />•O <br />1.17 <br />1077 <br />111 <br />11 <br />•DD <br />W <br />1)/ <br />171 <br />• <br />IY <br />71• <br />/J1 <br />aW <br />IJ• <br />I11 <br />IS <br />441 <br />•" <br />541 <br />Ito <br />y►) <br />fN <br />1031 <br />Iln <br />I•/ <br />.iiL <br />IV <br />•D <br />w <br />111 <br />1 <br />IN <br />3D <br />/v <br />113• <br />1511 <br />IU <br />Ia <br />LV <br />40 <br />lM <br />•Y <br />1 <br />•t1 <br />101 <br />11 G1 <br />111. <br />IJ► <br />IM <br />)M <br />110 <br />•JO <br />•Ls <br />IC <br />/:/ <br />2 <br />•47 <br />100 <br />11]0 <br />IIJI <br />IJI <br />11► <br />ISI <br />1.S <br />•1J <br />•U <br />11 <br />40 <br />714 <br />1111271 <br />311 <br />111 <br />IM <br />•1• <br />1.' <br />IN <br />7M <br />11M <br />Ji •1 <br />ll •c <br />2:7 <br />IPI <br />111 <br />)N <br />IO <br />•fl• <br />