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Cover I' <br /> G. MOUND SLOPE WIDTH & LENGTH Landslope:6 y �� a <br /> (landslope 1% or more) \ ��� _ :�"""` V,r. slope rah S;_/ <br /> 1. Subtract rock layer width from absorption width �g4jsm <br /> ;§ Clean Sand ie L - s <br /> to obtain minimum downslope width ' d1ura'Soil/i ° "�� . Topsoil <br /> --__..�.�a <br /> : <br /> A Limning lover <br /> y I <br /> ft - /D ft = /D feet upsto 1s th pe Width <br /> 2. Calculate minimum mound sizeRock Width- <br /> a. Determine depth of clean sand fill at <br /> upslope edge of rock layer: `hs°rpt'°^Width <br /> �� 1 <br /> Separation 3' - /./7 ft = 1.33 feet <br /> b. Add depth of clean sand for separation (2a) <br /> at upslope edge, depth of rock layer (1 foot) to SLOPE MULTIPLIER TABLE <br /> depth of cover (1 foot) to find the mound height Land UFSLOPE <br /> DOWNSLOPE <br /> g SIoPe, multipliers for venous multi tipeersratiofs vor arious <br /> at the upslope edge of rock layer; toy slope ratios p <br /> sco <br /> 1.,f3 ft + lft + lft = 3,83 feet 3:1 4:1 5:1 6:1 7:1 8:1 3:1 4:1 5:1 6:1 7:1 I <br /> c. Enter table with landslope and upslope ratio. 0 <br /> 3.0 4.0 5.0 6.0 7.0 8.0 3.0 4.0 5.0 6.0 7.0 <br /> Select berm multiplier of 3 85 1 2.91 3.85 4.76 5.66 6.54 7.41 3.09 4.17 5.26 6.38 7.53 <br /> d. Multiply berm multiplier by upslope mound 2 283 370 454 5.36 6.14 6.90 3.19 4.35 5.56 6.82 8.14 <br /> 3 2.75 3.57 4.35 5.08 5.79 6.45 3.30 4.54 5.88 7.32 8.86 <br /> 3 ight to find upslope width: <br /> t 8 x 3,85 = 1%8 feet 4 2.68 3.45 4.17 4.84 5.46 6.06 3.41 7.76 6.25 7.89 9.72 <br /> 5 2.61 3.33 4.00 4.62 5.19 5.71 3.53 5.00 6.67 8.57 10.77 <br /> e. Multiply rock layer width by 6 2.54 3.23 atIO 4_41 4.93 5.41 3 66 5 26 41110 9.38 12 07 <br /> landslope to determine drop in elevation; 7 2.48 3.12 3.70 4.23 4.70 5.13 3.80 5.56 769 10.34 13.73 <br /> /o x (a % - 100 =v/ ,l, feet 8 2.42 3.03 3.57 4.05 4.49 4.88 3.95 5.88 8.33 1154 15.91 <br /> f. Add depth of clean sand for slope difference 9 2.36 2.94 3.45 3.90 4.30 4.65 4.11 6.25 9.09 13.04 18.92 <br /> (2e) at downslope rock edge, to the mound 10 2.31 2.86 3.33 3.75 4.12 4.44 4.29 6.67 10.00 15.00 232 <br /> height at the upslope edge of rock layer (2b) 11 2.26 278 3.23 3.61 3.95 4.26 4.48 7.14 11.11 17.65 30., <br /> to find the downslope mound height; 12 221 2.70 3.12 3.49 3.80 4.08 4.69 7.69 12.50 21.43 43.75 I <br /> 3,83 ft + O, G ft = y4/3 feet <br /> g. Enter table with landslope and downslope ratio. Select <br /> downslope multiplier of 7 /V . <br /> h. Multiply downslope multiplier by downslope mound height to <br /> get downslope width: <br /> 3.23x 7,14' =,)7e1/feet <br /> i. Compare the values of step G.1 / 0 . . . <br /> and Step G.2h a 7. 9 <br /> Select the greater of the two values as the upslope Width <br /> 1 fy8 <br /> downslope width: D7, 9 feetrii <br /> j. Total mound width is the sum of Upslope Width ooQo;aoa9,;�2ock Bed �� 000flo, �:flc <br /> Upslo Width <br /> upslope (G.2d) width plus rock layer s iY' °°,`ea"o0,. ! Width �° �4.„t7,,F$:5c i7/�S <br /> .D a "'Qaoa° 4:Qa, Len�th o0o a.: a.o. o.<, <br /> width (D.2) plus downslope width(G.2i); n oo,oaoODo�o�08yo8vrt'o 'go QoB� sc <br /> i1/,g ft + /0 ft + o77.�ft = 5 . feet Downslope Width a7e� <br /> k. Total mound length is the sum of upslope Absorption Width I o <br /> width (G.2d) plus rock layer length (D.3) --` <br /> plus upslope width (G.2d); <br /> /1//s ft + 75 ft +, /Y,Bft = /O'/4 feet Total Length ioyr< <br /> 9'''-6 <br /> Final Dimensions: -750X 7.1-3 = 15 98 <br /> 5?, a x I ay,(o 75 x 3•a3 x,yrg = 3585 <br /> 75x 3,esxa7,y=a=39_y <br /> 9./417 ---> 31/6, yds <br />