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G. DOWNSLOPE BERM WIDTH Slope:_ Cover V <br /> 1. If landslope is 1% or more, <br /> subtract rock'layer width from adsorption width <br /> to obtain minimum downslope berm toe scan Sana s'Topsoil <br /> ft- is ft= /o feet atural soil <br /> 2. Calculate Minimum mound Size <br /> a. Determine depth of clean sand fill at Upslope Width Downslope width <br /> upslope edge of rock layer: Rock Width Absorption Width <br /> Separation 3' - a ft = -l-feet <br /> b. Add depth of clean sand for separation (2a) <br /> at upslope edge, depth of rock layer (1 foot) to depth of cover <br /> (1 foot) to find the mound height at the upslope edge of rock layer; <br /> ft+ 1ft+ 1ft= 2 feet <br /> c. Enter table with landslope and upslope berm upslQpe wrath <br /> -. <br /> ratio. Select berm multiplier of ;- <br /> 7 vp opeWid <br /> n, .Ups ope Width <br /> d. Multiply berm multiplier by upslope mound <br /> height to find upslope berm width: <br /> 3 <br /> x 1.1 =_3 feet <br /> e. Multiply rock layer width by r <br /> F• r.:r r Downslope width / <br /> landslope to determine drop in elevation; Absorption widch�o- <br /> w x S %+ 100 ='feet 5 3o AvL- <br /> f. Add depth of clean sand for slope Total Length 1n <br /> difference (2e)at downslope edge,to <br /> the mound height at the upslope edge <br /> of rock layer (2d) to find the downslope height, <br /> 3 ft+ . s ft= 3.Sfeet <br /> g. Enter table with landslope and downslope berm ratio. Select <br /> berm multiplier of S, v <br /> h. Multiply berm multiplier by downslope mound height to get BERM SLOPE MULTIPLIERS <br /> downslope berm width: <br /> 3 S x S ='feet Law DOWNSLOPE UPSLOPE <br /> i. Compare the values of step G.1_ /0 !r '"r�a�p" erados °°' ''e`mmultipliers pe ratios � <br /> and Step G.2h_18' <br /> Select the greater of the two values as the <br /> downslope berm width; I g feet 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> j. Total mound width is the sum of 1 3.09 4.17 5.26 6.38 7.53 2.91 3.85 .4.76 5.66 6.54 7.41 <br /> upslope berm (G.2d) 2 3.19 4.35 5.56 6.82 8.14 2.83 3.70 4.54 5.36 6.14 6.90 <br /> width plus rock layer width(D.2) 3 3.30 4.54 5.88 7.32 8.86 2.75 3.57 4.35 5.08 5.79 6.45 <br /> 4 3.41 4.76 6.25 7.89 9.72 2.68 3.45 4.17 4.84 5.46 6.06 <br /> plus downslope berm width(G.2i); 5 3.53 5.00 6.67 8.57 10.77 2.61 3.33 4.00 4.62 5.19 5.71 <br /> ' ft+ /p ft+ _Lj_ft= 3( feet 6 3.66 5.26 7.14 9.38 12.07 2.54 3.23 3.85 4.41 4.93 5.41 <br /> k. Total mound length is the sum of upslope 7 3.80 5.56 7.69 10.34 13.73 2.48 3.12 3.70 4.23 4.70 5.13 <br /> berm width(G.2d)plus rock layer length(0.3) s- 3.95 5.88 8.33 11.54 15.91 2.42 3.03 3.57 4.05 4.49 4.88 <br /> plus upslope berm width (G.2d); 9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4.65 <br /> ft+ s�a ft+ �s ft feet <br /> r swPe g 10 4.29 6.67 10.00 15.00 23.33 2.31 2.86 3.33 3.75 4.12 4.44 <br /> = b� <br /> D�-"SLOPeT .5'a� /�� SO 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 12.50 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4.08 <br /> Final Dimesions: ots:The product of the multipplier and the hei��l1tit results in the horizontal distance to where the <br /> rm meets the original lard sl Example:Xfht at upper edge of rock layer is 3.0 feet.rock <br /> Ayyer is 10 feet wide,lard dope is 6%and berm slope rano is 4:1.Upslope berm width is 3.23 x <br /> sLOPC 36 X 6�• .0-9.7 ft;height at lower edge of rock layer is 3.0+10 x 0.6-3.6 ft and downslope berm wid <br /> 5.26 x 3.6.18.9 ft <br /> 7W Al <br />