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S1 Cover 1' <br /> G. DOWI�ISLOPE BERM WIDTH <br /> 1. If landslope is 1% or more, <br /> subtract rock layer width from adsorption width <br /> ,J<.,.vtT•, , Rock l' '.;,i ��,..: : . <br /> to obtain minimum downslope berm toe oma,s.na J. <br /> (: :`.,•�:^. ,..:, 'P', 6'Topsoil <br /> ft-.10 ft =.�2_._feet Natinid Sod 31'fl <br /> 2. Calculate Minimum mound Size <br /> Width <br /> a. Determine depth of clean sand fill at cl�l width <br /> upslope edge of rock layer: ,' ,brow tion W1dth <br /> Separation 3' --i, .<. _ft= 1..f 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 /> (i foot) to find the mound height at the upslope edge of rock layer; <br /> Ir� ft+ ift+ lft = 3.s' feet <br /> c. Enter table with landslope and upslope berm uP:1oa Width <br /> ratio. Select berm multiplier of 3 , S7 <br /> d. Multiply berm multiplier by upslope mound up width.. °�v4x¢i Rock sed �a ax � r.. upslope width <br /> Width /Q_ <br /> height to find upslope berm <br /> width: y l '< n_;, „�.: ... �,�i?�i �,���• �, <br /> r <br /> x _ ijfeet <br /> y c x <br /> e. Multiply rock layer width by s ` <br /> landslope to determine drop in elevation; 9 Downslope wd°� 3 <br /> 0x�_%+ 100 = _feet <br /> f. Add depth of clean sand for slope TOW Lead � <br /> difference (2e)at downslope edge,to <br /> the mound height at the upslope edge , <br /> of rock layer (2b) to find the downslope height; <br /> �•v� a, -fo L�.�ter,+ �-� su�c�,-, F�� <br /> 3'S ft+�_ft= 3•� feet s.�,-�,�•.,�ou. <br /> g. Enter table with landslope and downslope berm ratio. Select <br /> berm multiplier of .y.Sy <br /> h. Multiply berm multiplier by downslope mound height to get <br /> downslope berm width: <br /> L ,S`i x 3. _ feet BERM SLOPEMULTUIXMS <br /> i. Compare the values of step G.11 '2 <br /> Land DOUPSLOPEWNSLOPE Ste G.2h 0 Slpbmmwn a� �„us berm <br /> multipliers for various <br /> Select the greater of the two values as the berms slope mdas bee -slope mos <br /> downslope berm width; use 1,9 feet <br /> j. Total mound width is the sum of 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> upslope berm (G.2d) 1 3.09 4.17 5.26 6.38 7.53 2.91 3.85 4.76 5.66 6.54 7.41 <br /> 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 <br /> plus downslope berm width(G.2i); 3 3.30 ("3 5.88 7.32 8.86 2.75 57 4.35 5.08 5.79 6.45 <br /> ft+ ft+ L_ft = 4 I feet a 3.41 4.76 6.25 7.89 9.72 2.68 3.45 4.17 4.84 5.46 6.06 <br /> k. Total mound length is the sum of upslope 5 3.53 5.00 6.67 8.57 10.77 L61 3.33 4.00 4.62 5.19 5.71 <br /> 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 <br /> 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 <br /> _ft+�_ft+..1._3 ft= ,e2_feet 8 3.95 5.88 8.33 11.54 15.91 2.42 3.03 3.57 4.05 4.49 4.88 <br /> 1 � _ 7 7 9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4.65 <br /> 10 4.29 6.67 10.00 15.00 2333 2.31 2.86 3.33 3.75 4.12 4.44 <br /> Final Dimensions: 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 2.21 270 3.12 3.49 3.80 4.08 <br />