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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 /> LQ ft- )o ft= 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 J.a feet <br /> b. Multiply rock layer width by landslope r l.ot cev.r <br /> to determine drop in elevation; t'foot i; e a <br /> Slope Difference Separation te.t <br /> x %y 100 =4 feet Slops Difference c�_ t <br /> JDsl'P Width <br /> c. Add depth of clean sand for separation (2a) -LL feet Rock Bed Width <br /> at upslope edge,depth of rock layer(1 foot) to depth of D_feet Downslope Width <br /> cover(1 foot) to find the mound height at the upslope edge - feet <br /> of rock layer; <br /> 2 ft+ Ift+ 1ft= 3.Q feet <br /> d. Enter table with landslope and upslope dike ratio. <br /> Select dike multiplier of 2,u !� <br /> e. Multiply dike multiplier by upslope mound height <br /> to find upslope dike width: 3.-� x _ _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(20 to fir} the do height; <br /> ft_- feet <br /> g. Enter table with landslope and downslope dike ratio. <br /> Select dike multiplier of U .9 t. <br /> h. Multiply dike multiplier bydo slope mound height <br /> to get downslope dike width x 19j, =J-2 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; <br /> feet <br /> UDSIOD•W101n { <br /> j. Total mound width is the sum of <br /> upslope dike (G.2e) width plus rock ftDCk e.e,wlotnh Y ' ' <br /> , footlayer width (D.2)plus UDsiooa +leie vr <br /> l.tn <br /> , f' feet <br /> downslope dike width(G 2i) <br /> _eft+eft +I_ft =feet k <br /> k. Total mound length is the sum of Downslope afatn> <br /> g re.tr,4 >>< <br /> upslope dike width(G.2e) plus <br /> width laver • y } <br /> len (D.3)plus upslope d� (G ), :::.:;.:. :.;.;,:><;::.::;.:: ;;:;;;:.>:.;. <:<<;:<:<.:< r <br /> g P <br /> �Lft+ by ft+�_ft = �D feet <br /> ... <br /> g o <br /> Total Len0tn <br /> i <br /> Vownslope Lpslope <br /> 3:1 tl 5:1 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1 <br /> %slope <br /> 0 3.0 t0 51 60 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 1 30 4.17 526 638 753 2.91 185 4.76 5.66 654 7.41 <br /> 2 3.19 434 556 552 8.14 2.83 3.70 454 5536 614 6.90 <br /> 3 330 4-545.88 732 8.86 2.73 57 435 5.08 5.79 6A5 <br /> _ 3A3. 176 _6?S.._.._. ..7.89 9.� ..6d 3.ti� 4.17 &N 5.46 6.06 <br /> 4 _. .._.._ ,. _--... <br /> -5 353 S.w 6.67 8.7 10.77 :61 33 4.00 4.62 5.19 ST <br /> 6 3L6 526 7.14 938 12.07 2.53 3.21 3.8i 4.41 4.93 SAI <br /> 7 350 556 7.69 1034 1373 248 3.12 3.70 421 t10 5.13 <br /> a3.95 598 833 1154 15.91 2.42 3.03 357 4.05 4.49 498 <br /> 9 4.11 625 9.09 13.06 18.92 2.36 2.94 3.45 3.90 430 4AS <br /> 10 429 667 10.0 15.00 2333 231 286 333 325 4.12 4A4 <br /> II 4AS 7.14 11.11 17.65 30.33 2.26 2.78 3.23 3.61 3.95 4.26 <br /> 12 4A9 7.69 3250 21.43 43.75 121 270 3.12 3.49 3.80 418 <br />