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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 <br /> at,7 ft- /a 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. '" feet <br /> b. Multiply rock layer width by landslope ' tbot 't:over <br /> to determine drop m elevation; ' foot R e :cid <br /> Separation ht.( feet <br /> Slope Difference <br /> /p x y %+ 100 .L feet stove Difference �� et <br /> = upslope Width <br /> c. Add depth of clean sand for separation (2a) _feet <br /> p P Rock Bed Width <br /> at upslope edge,depth of rock layer (1 foot) to depth of _L feet Downslope e tate <br /> cover (1 foot) to find the mound height at the upslope edge <br /> of rock layer; <br /> l. ' ft+ Ift + lft= 3, C feet <br /> d. Enter table with landslope and upslope dike ratio. <br /> ' Select dike multiplier of 3. Li s <br /> e. Multiply dike multiplier by upslope mound height <br /> to find upslope dike width: 3.,d x 3.4{= 13 feet <br /> f. Add depth of clean sand for slope difference (2b) at <br /> downslope edge,to the mound height at the upslope edge <br /> of rock layer (2c) to find the downslope_height; <br /> 3, 'i ft+ , y -ft= .a feet <br /> g. Enter table with landslope and downslope dike ratio. <br /> Select dike multiplier of- y -, t' . <br /> to get downslope dike width: 4,Z x L4/7.. .,== a 0 feet <br /> i. Compare the values of step G.1 and Step G.2h Select the <br /> greater of the two values as the downslope dike width; 1_ <br /> a 0 feet1 <br /> 110610 a WIOtn < <br /> j. Total mound width is the sum of 1feet <br /> upslopesloPe <br /> dike (G.2e)widthth plus rock .......... � <br /> eke a wta• cn• <br /> v til <br /> layer width (D.2)plus o undo a width..: .• . .*. . . feet . . .. uu1 seetn <br /> tset <br /> .21 <br /> 1 <br /> dike <br /> width(G.2i); - <br /> downslope ( ), '>:<::»><::<> <:::»>:.::.»::;;�<:>::.:: <br /> ) 3 ft+ /o ft+ a0 ft = 1•43 feet <br /> ""'0'•''•-• DownslODe WIOtn <br /> k. Total mound length is the sum of <::::::.>:<:::.: <br /> eet , <br /> upslope dike width (G.2e)plus rock layer f <br /> length (D.3)plus upslope dike width (G.2e); .. '""' <br /> 13 ft+ v ' ft + I.A. ft = c1y. feet t <br /> �o� <br /> r r c.,/, + ? hx/- <br /> Downslope Upslope -� <br /> 3:1 4:1 5:1 61 7:1 3:1 4:1 5:1 6.1 7:1 8:1 <br /> R slope <br /> 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 1 3.0? 4.17 5.26 6.38 753 291 3.85 4.76 5.66 6.54 7.41 <br /> 2 3.19 4.35 556 6.82 8.14- 2.83 3.70 4.54 536 6.14 6.90 <br /> 3 3.30 454 5.88 7.32 8.86 2.75 357 4.35 5.08 5.79 6.45 <br /> 4 _ ...___3.41 625 7.89 9.72 2.68 3.45 4.17 4.84 5.46 6.06 <br /> 5 353 _�,.00 6.67 .857-.___. I0.77_. _._2.61- •3 4.00 4.62 5.19 5.71 <br /> 6 3.66 526 7.14 9.38 12.07 2.54 3.23 3.85 4.41 4.93 541 <br /> 7 390 5.56 7.69 10.34 13.73 2.48 3.12 3.70 423 4.70 5.13 <br /> 8 3.95 5.88 8.33 11.54 15.91 2.42 3.03 3.57 4.05 4.49 4.88 <br /> 9 4.11 6.25 9.09 13.04 18.92 236 2.94 3.45 3.90 430 465 <br /> 10 429 6.67 10.0 15.00 2333 231 286 3.33 3.75 4.12 4.44 <br /> • 11 4.48 7.14 11.11 17.65 30.43 2.26 2.78 3.23 3.61 3.95 4.26 <br /> 12 4.69 7.69 1250 21.43 43.75 2.21 270 3.12 3.49 390 4.08 <br />