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c-cu <br /> 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 <br /> _ft- _ft =_ / D ft . <br /> 2. Calculate mound height at edge of rock layer on downslope <br /> side; . ; <br /> a. Determine depth of clean sand fill at upslope edge of rock 0COVIll•*oru••• <br /> layer: Separation I, o feet ti''" ' ::�'"`: <br /> b. Multiply rock layer width by landslope to determine drop • -- - <br /> in elevation; Slope Difference • ••••• •I•••w;••a• • • <br /> � <br /> C x___4___%+ 100 = . '-jft . •a••_• <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 layer; <br /> i, Li ,ft + i.o ft+ .s ft+_eft= 7 . y ft - ; <br /> d. Enter table on page E-18 with landslope and downslope <br /> dike ratio. Select dike multiplier of ti . ') L. . <br /> e. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 4,-)c,x 3.y = / L, ft <br /> g. Compare the values of step G.1 and Step G.2.f. Select the <br /> greater of the two values as the downslope dike width; <br /> / c. feet Nock 1.7..width w21 <br /> h. Calculate upslope dike width using upslope mound /-- <br /> height and upslope dike multiplier from page E-18; <br /> z .o x (= / o ft up.lope dike width w <br /> i. Total mound width is the sum of upslope dike width plus °o"'siop'dLOfeldt w <br /> rock layer width plus downslope dike width; <br /> A.) ft+ 10 ft+ , L ft= . ft <br /> 3. If landslope is 2.9 percent or less,basal width includes both the u-�1-'v-- - x �1° <br /> upslope and downslope dike widths. 20 s`OV <br /> a. Calculate downslope dike width using steps G.2.a. a.o'v?st-o , 3.ce oow>,s%-°pc_ <br /> through G.2f; feet , 1, i.i.,, a, <br /> b. Calculate upslope dike width using upslope mound <br /> _.........�..... height and dike multiplier from Page E-18; 9 x,1 a x z = 4 I <br /> X ft= ft <br /> r c. Add downslope dike width to upslope dike width to rock ��`" �` ,� <br /> layer width <br /> ft+ ft+ ft = ft ,, <br /> • <br /> . E-18 <br /> Downslope tipstope <br /> 31 41 51 41 71 31 41 51 41 71 $1 <br /> II 0 dap3.0 4.0 5.0 4.0 7D 1.0 4.0 5.0 4.0 7.0 1D ,-----. <br /> 1 3D1 4.17 526 434 733 2.91 315 491 541 6.54 7.41 <br /> 2 3.11 435 5.54 132 114 211 370 434 531 4.14 130 <br /> 3 3.30 434 511 7.32 311 275 3.57 431 5.05 5.79 445 <br /> • 4 341 474_ 11.75_ _ 7.89 719 172 -2.6I__3A5 4.17 411 541 1D6 <br /> 1 333 /m 147 137 10.77 241 333 - 4213 - 442 539 571 <br /> 4 344 371 7.14 131 12.07 234 373 343 4.41 433 5.41 <br /> 7 110 0144 IN 1044 1171 41 1.17 1.10 /I 490 1.11 <br /> ,:,►a...-. .'',4 ---- '"14H. .:. It4$ 141 1 44 .#-' 1Y.r1 _ A/ 04$ •M 44$ 4 4M <br /> 1 4.1! l�! SDI ,. . 1 1U2 .,' SA ... )J +-- 4J0 ,- .... ,44j , ..•wr,'.w <br /> 10 4.29 447 10. 1500 2333 231 231 333 3.75 4.12 4.44 <br /> 11 444 7.14 1111 1746 30.43 2.23 2.73 3.73 313 3.96 424 <br />