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G. DOWNSLOPE BERM WIDTH Slope.- cover V <br /> 1. If landslope is 1% or more, <br /> k layer width from adsorption width ' ' ' '` * <br /> subtract roc .�;a�}:�t:�, �� ;+�.. <br /> downslope berm toe .aeu+s.nd <br /> to Obtain minimum .. `,,,, - '.�•�,�•.�., 6-Topsoil <br /> aft-io ft= 10 feet .e�ls°u.A� <br /> 2. Calculate Minimum mound Size n°wn:l Width <br /> a. Determine depth of clean sand fill at <br /> upslope edge of rock layer: °O11dth <br /> Separation 3' - 1,o ft = .2.o 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+'ift+ ift = y•D feet ' '��� ' <br /> c. Enter table with landslope and upslope berm '. :: ; vps_I�widw . <br /> ratio. Select berm multiplier of <br /> Width- <br /> --';U sl Width �q� :�ax4: Rock Bed ?Q.4Q7�i4�.T nUpslo Width- <br /> Ir <br /> d. Multiply berm multiplier by upslope mound pl y �- � w,ath n cti ¢A <br /> width: 4 '• .. � ..•• .• ��: <br /> berm <br /> height to find upslopeA } <br /> x H. (� _.1�_feet <br /> 0 s a t <br /> e. Multiply rock layer width by <br /> Fs th <br /> landslope to determine drop in elevation; Downslope WidAbsorption w,d <br /> /x�-%+ 100 = - feet , <br /> f. Add depth of clean sand for slope <br /> Toud Le, toy , <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 /> H.o ft+ L4 ft= 4,y feet <br /> g. Enter table with landslope and downslope berm ratio. Select <br /> berm multiplier of 4.1) U <br /> h. Multiply berm multiplier by downslope mound height to get <br /> downslope berm width: <br /> yi lu x 4,q = Al feet BERM SLOPE MUI''M-URS <br /> i. Compare the values of step G-1 10 <br /> and Step G.2h I- Slo be bm=Wdp�lkn f variotu I,-m--pllersLOPE O toor mriow <br /> Select the greater of the two values as the is% berm slope r tias Pe ratios <br /> downslope berm width; a I feet <br /> Total mound width is the sum of <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 /> 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 4.54 5.88 7.32 8.86 2.75 3.57 4.35 5.08 5.79 6.45 <br /> .y ft+_j o ft+ a ft= .1_,�' feet 4 3.41 [a:76-) 6.25 7.89 9.72 2.68 3.45_X4.17 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 2.61 333 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+ (.1 ft+�ft= )o 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 /> a 1 -1- L e1 t a c7 y 9 4.11 6.23 9.09 13.04 18.92 2.36 294 3.45 3.90 4.30 4.63 <br /> 10 4.29 6.67 10.00 15.00 23.33 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 2.70 3.12 3.49 3.80 4.08 <br /> 64 s� X 9 '7 AO <br />