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G. DOWNSLOPE BERM WIDTH slope:_ cover r 1. If landslope is 1% or more, subtract rock layer width from adsorption width (Rods 1' i a to obtain minimum downslope berm toe Clean sa„d a ft--IQ_ft feet ahual soil 2. Calculate Minimum mound Size a. Determine depth of clean sand fill at upslope Width Do`T`slope Width upslope edge of rock layer: Ro&Width Absorption width Separation Y - J,:�_ ft = /- ? feet b. Add depth of clean sand for separation (2a) at upslope edge, depth of rock layer(1 foot) to depth of cover (1 foot) to find the mound height at the upslope edge of rock layer; •3 ft+'1ft+ 1ft= '1.3 feet c. Enter table with landslope and upslope bermuPsl°pe Width . ratio. Select berm multiplier of 3.33 --�- d. Multiply berm multiplier b upslope mound ups"rrda,: yY. `Bed ''4= ' '.:`u�l°P``"'°>t� P YY �- o.. . 'nr�l� 10 height to find upslope berm width: > , �,� 3.3 x 3_33 _ 1.�_feet T e. Multiply rock layer width by landslope to determine drop in elevation; �° Dai s>ope Width Absorption Wad /fl x_,5-216= 100= r feet f. Add depth of clean sand for slope TOW Length G Ft difference(2e)at downslope edge,to the mound height at the upslope edge of rock layer(2b)to find the downslope height; -U ft+_-<' ft= 3. 8- feet g. Enter table with landslope and downslope berm ratio. Select berm multiplier of S,a v IL Multiply berm multiplier by downslope mound height to get downslope berm width: 3. - x-r= 15 feet BntM SLOPE MULT1PL M i. Compare the values of step G.1 17 and Step G.2h P) _ SbM La" DOWNSLOPE UPSLOPE berm=Mprms uriotis berm inuMpHas ra<.>ximis Select the greater of the two values as the in bet m slope nWas berm AW ratios downslope berm width; /9 feet j. Total mound width is the sum of 4 5 4 5 7 upslope berm(G.2d) 0 3.0 a:o 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 t 3.09 4.17 5.26 6.38 7.53 2.91 3.85 4.76 5.66 6.54 7.41 width plus rock layer width (D.2) 2 3.19 4.35 5.56 6.82 8.14 2.83 3.70 4.54 5.36 6.14 6.90 plus downslope berm width(G.2i); 3 3.30 4.54 5.88 7.32 8.86 2.75 3.57 4.35 5.08 5.79 6.45 11 ft+1Q_ft+ jj-- ft = _Y feet 4 3.41 4.76 6.25 7.89 9.72 2.68 3.45 4.17 4.84 5.46 6.06 k. Total mound length is the sum of upslope 5 3.53 <s.D 6.67 8.57 10.77 2.61 3.33 4.00 4.62 5.19 5.71 berm width(G.2d) plus rock layer length(D.3) 6 3.66 5.26 7.14 9.38 12.07 2.54 3.23 3.85 4.41 4.93 5.41 plus upslope berm width (G.2d); 7 3.80 5.56 7.69 10.34 13.73 2.48 3.12 3.70 4.23 4.70 5.13 e�J_ft+ -31- ft+I- ft = 40 feet 8 3.95 5.88 8.33 11.54 15.91 2.42 3.03 3.57 4.05 4.49 4.88 Wre-/S 2 f 9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4.65 10 4.29 6.67 10.00 15.00 23.33 2.31 2.86 3.33 3.75 4.12 4A4 Final Dimensions. It 4.48 7.14 11.11 17.65 30.43 2.26 2.78 3.23 3.61 3.95 4.26 12 4.69 7.69 12.50 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4.08 Uwn `1 o X o