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. G: DOWNSLOPE DIKE WIDTI I <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 /> 0c,••-7 ft- 10 ft = 1 ') 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 . Q feet <br /> b. Multiply rock layer width by landslope to determine drop „ „ . <br /> In elevation; Slope Difference . A ,tts-F :. .11 <br /> /0 x y % + 100 = , 1-1 feet0.,,,;,,�. <br /> c. Add depth of clean sand depth of clean sand for • or.r.•» "'` -•. <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 /> t. 0 ft + 1 ft + 1 ft = 3. 0 feet <br /> d. Enter table on page bottom with landslope and upslope • <br /> sot-S-.1" ``� 'T <br /> dike ratio. Select dike multiplier of 7),L-1 . . )..\- "-=- `•1•I A. 3.4 s. Int <br /> e. Multiply dike multiplier by upslope mound height y.y ,. y .' , =_a <br /> to get upslope dike width: .0 x 3.1-iJ = / 0 feet ' <br /> . f. Add the depth of slope difference (2b) to the upslope <br /> height to get the downslope height <br /> 3• v + . Li = 3.y feet . <br /> g. Enter table on page bottom with landslope and <br /> downslope dike ratio. • ---s, <br /> Select dike multiplier of U'.0 6 <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 3-y x 14 j7k, = 1 ;, feet lo <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 /> 1 ') feet <br /> C\4`) <br /> .•:;{;,:6!:,;;',;:::::;tir:::: •i;tit..Lir::,:::{f4:?; :.,,:{::•.j. Total mound width is the sum of upslope dike •r w di;''In' ' ` ::1 width11.;:i..',6*. <br /> ''''''''':. ::.:::.'!'044 <br /> � �••;•,"�.: f{: ,r.•r;•,f r::{;,; j {.Y{.,Y{.V{ {•.•,:: <br /> width plusrock layer width plus downslope <br /> < r <br /> • <br /> dike width; 1anwqltl�s" -" <br /> Hu , <br /> Som\-\-vWT-S-- / 0 ft + 1 a ft + I ft = e3 (7 feet up.lope oic.Wiicfih •• • ':: s• :ti:;:::;: ;:Up:ip.ok. <br /> . :w:la:lh1,1:k. Total mound length is the sum '•:;•::::%::'.:::•::•::::•::: :•::•:':::•::•::.:::of upslope � ti; :: .,s, f.: , <br /> '� <br /> '`' • .w^;i ,ti;i. wd,t :I' :dike width plus rock layer length plus '(..p : : • : • . ` `'•{;{;.{.;; <br /> upslope dike width <br /> j 0 ft + ft + i .3 ft = fill_ feet . Tdrllength_ 01 <br /> 1 '-.7 4- .5' S 4-- I c./.....z...... .... .................tr <br /> - Elope / <br /> 3:1 4:1 6:1 4r1 7:1 3:1 4:1 4c1 7:1 1:1 <br /> %,lope <br /> 0 3.0 4.0 5.0 6.0 7.0 3.0 1.0 5.0 60 7.0 4.0 <br /> 1 3.01 4.17 526 614 731 2.91 3.115 4.76 S.66 654 7.41 <br /> 2 3.19 4.35 536 6.82 4.14 2.83 3.70 4.51 5.36 6.14 4.90 <br /> 3 310 434 518 7.32 8.86 2.75 337 415 5.08 5.79 6.45 <br /> 4 341 ,-4.747 625_ 7,89.i 9.72 2.68 <3.45) 4.17 4.84 3.46 6.06 <br /> 'S---333----3.00 ^'_6.67 657 "-- <br /> _ 10.77-- _7.61 333 4.00 4.67 3.19 5.71 <br /> 6 3.66 3.26 7,14 9.38 12.07 2.54 3.23 3.35 1.11 1.93 5.41 <br /> 7 3.80 536 7.69 1034 13.73 2.48 3.12 3.70 4.23 4.70 8.13 , <br /> 8 3.95 5.88 8.33 1134 15.91 2.42 3.01 3.57 4.06 4.49 444 <br /> 9 4.11 6.25 9.09 , 13.01 18.92 2.36 3.94 3.45 3.90 4.30 4.66 j <br /> 10 4.29 6 10 0 15.00 2333 2.31 2.86 3.33 3.75 1.12 1.41 1 <br /> 67 <br /> 11 4.18 7.11 11.11 17.65 30.43 2.26 7.78 323 3.61 3.9S 426 <br /> 12 419 7.69 1230 21.43 43.75 7.21 2.70 3.12 3.49 3.80 4.01 <br />