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(;. I)OWNSI UFE BERM W11)11 I 1�p t 1 <br /> If landslope is 1% or more, - •,? ' I} -- <br /> N♦ <br /> M <br /> ` <br /> subtract rock layer width from adsorption width .„.41:01.310" '"` 0.43P-.1 6,J,.�;1 •.-• <br /> to obtain minimum downslopeRnck 1 �ppooc ,,;� <br /> I1 / berm to � xe%� Clean Sand ,i�".Y',6�,thry!i?.''.Gra., <br /> at) ft - /0 ft = t U _ feet Natural Soil :' 6.Topsoil ? y <br /> 2. Calculate Minimum mound Size ---- _� CUs„ <br /> a. Determine depth of clean sand fill at <br /> llpSlope Width Downslope Width <br /> �- <br /> upslope edge of rock layer: Rock Width Absorption Width <br /> Separation 3' - Z ft = ( 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 /> I ft + lft + lft = 3 feet <br /> c. Enter table with landslope and upslope berm �510 e width <br /> ratio. Select berm multiplier of 3.23 . b `7 ^�A�-;W:4'15.9.1: <br /> d. Multiply berm multiplier by upslope mound °° ~width °`°°"d <br /> Upfl_gpe Width °DOpoiiPODb� Rock Bed �o°ooHp�s� Upslo Width <br /> iy D ti a Qe� 1::&:&%7;b:6: <br /> height to find upslope berm width: H ° o '�°°��'D Ha <br /> o < <br /> soo�°off°Qoop6o0°Q'oHUeHV QoQo Hb 8� <br /> 3_____x 3-2,. _ 9feet <br /> e. Multiply rock layer width by <br /> landslope to determine drop in elevation; F Downslope Width 14 5 <br /> o Absorption Width /0 <br /> /0 <br /> /0 x 6 - 100 =©•6 feet <br /> f. Add depth of clean sand for slope <br /> Total Length <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 /> 3 ft+b•IS. ft = S.L feet <br /> g. Enter table with landslope and downslope berm ratio. Select <br /> berm multiplier of 5-2-6 <br /> h. Multiply berm multiplier by downslope mound height to get <br /> downslope berm width: <br /> 36 x5.26 = /t9`1 feet BERM SLOPE MULTIPLIERS <br /> i. Compare the values of step G.1 /0 <br /> and Step G.2h /4' Land DOWNSLOPE UPSLOPE <br /> Slope. berm multiplies for various Dena mulltipbers for various <br /> Select the greater of the two values as the in% berm slope Bios berm slope ratios <br /> downslope berm width; /P, • 1 feet , <br /> 3 1 4:1 5:1 6:1 7:1 3:1 4 1 5:1 6 1 7:1 8:1 <br /> j. Total mound width is the sum of <br /> 0 3.0 4.0 5.0 6 o zo 3.0 4 o s o 6 o 7 0 8.0 <br /> upslope berm (G.2d) <br /> I 309 4 17 5-26 638 7.53 2.9I 3.85 476 5.66 6.54 7.41 <br /> width plus rock layer width (D.2) <br /> 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 s ss 732 8 86 2.75 357 4 35 s os 579 6 as <br /> 5-? ft + /GI ft +/�-�ft =1-1- -i‘' feet 4 341 4 76 6.25 7.89 9.72 2.68 345 4 17 484 546 606 <br /> k. Total mound length is the sum of upslope s 3 s s 00 6 67 857 10.77 2.61 3 31 400 4 62 5 19 5.71 <br /> berm width (G.2d) plus rock layer length (D.3) 6 366 5 26 7 14 9 38 12 07 254 3 23 3 85 441 4 93 541 <br /> plus upslope�erm width (G.2d); 7 3 8o 5 56 7.69 10.34 1373 2.48 3 12 3 70 4 23 4.70 5-13 <br /> /Y ft + 3 ft + /1/ ft = 9/ 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 /> 9 4 11 6 25 909 13.04 18.92 2 36 2 94 3 45 390 4.30 4 65 <br /> I 10 4 29 6 67 1000 15.00 23.33 2.31 2 86 3 33 3 75 4 12 4 4-4 <br /> Final Dimensions: i 0 448 714 ILII 17.65 3043 226 278 323 361 195 426 <br /> v� <br /> 2�' 6 x 9/ 12 4 6,1 7 69 12 50 21.43 43 75 2.21 2 70 3 1 2 3 49 3-80 4 08 <br />