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• <br /> G.' MOUND SLOPE W DTH &LENGTH I Landslope> 1% slope <br /> (landslope greater han 1%) I byI <br /> 1. Downslope absorption 'dth= absorption width�(F) �'� , a -Aim ".° as ••,s <br /> minus rock layer width (D2) _ � � � �. . <br /> r a '�'� 6"Topsoil <br /> t. <br /> a,U.� ft- A�� ft= t '� ft &-'1,-,1- ,- . ani ft __.. <br /> mmis <br /> ops per, Rock Wt t%'DZ) D°""sY1"(;,21) <br /> 2. Calculate mound size 111 <br /> UPSLOPE <br /> a. Depth of clean sand fill at upslope edge of <br /> rock layer = 3 ft minus the distance to restricting layer (C1) 13.,,e. - -" s. <br /> 3 ft- ?,' -t ft= / .0 ft <br /> b. Mound height at the upslope edge of rock D- SLOPE MULTIPLIER TABLE <br /> layer= depth of clean sand for separation (G2a) Land UPSLOPE DOWNSLOPE <br /> Slo multipliers for various multiptiers for various <br /> at upslope edge plus depth of rock layer (1 ft) in `` slope ratios slope ratios <br /> plus depth of cover (1 ft) ( 3:1 4:1 5:1 6:1 7:1 8:1 3:1 4:1 5:1 6:1 7:1 <br /> 'I 0 0 ft+ 1ft+ lft= 3.0 ft 0 3.0 4.0 5.0 6.0 7.0 8.0 3.0 4.0 5.0 6.0 7.0 <br /> c. Upslope berm multiplier based on land slope 1 2.91 3.85 4.76 5.66 6.54 7.41 3.09 4.17 5.26 6.38 7.53 <br /> .1,31 (see figure D-34) 2 283 3.70 4.54 5.36 6.14 6.90 3.19 4.35 5.56 6.82 8.14 <br /> d. Upslope width= berm multiplier (G2c) times 3 2.75 3.57 435 5.08 5.79 6.45 3.30 4.54 5.88 732 8.86 <br /> upslope mound height (G2b): 4 2.68 3.45 4.17 4.84 5.46 6.06 3.41 4.76 6.25 7.89 9.72 <br /> civ X ti•• ft = r ft 5 2.61' 3.33 4.00 4.62 5.19 5.71 3.53 5.00 6.67 8.57 10.77 <br /> T 6 2.54 3.23 3.85 4.41 4.93 5.41 3.66 5.26 7.14 9.38 12.07 <br /> Y v 1 V <br /> DO SLOPE 7 2.48 3.12 3.70 4.23 4.70 5.13 3.80 5.56 7.69 10.34 13.73 <br /> e. Drop in elevation = rock layer width (D2) times 8 2.42 3.03 3.57 4.05 4.49 4.88 3.95 5.88 8.33 11.54 15.91 <br /> percent landslope (C5) T 100 9 2.36 2.94 3.45 3.90 4.30 4.65 4.11 6.25 9.09 13.04 18.92 <br /> /0 ft x I o %+ 100 = 1.0 ft 10 231 2.86 3.33 3.75 4.12 4.44 ar, 6.67 10.00 15.00 23.33 <br /> f. Downslope mound height= depth of clean 11 2.26 2.78 3.23 3.61 3.95 4.26 4.48 7.14 11.11 17.65 30.47 <br /> sand for slope difference (G2e) at downslope 12 2.21 2.70 3.12 3.49 3.80 4.08 4.69 7.69 12.50 21.43 43.75 <br /> rock edge plus the mound height at the J <br /> upslope edge of rock layer (G2b) <br /> 3.0 ft + /. 1 ft= 41,0 ft 3 %Iss <br /> g. Downslope berm multiplier based on percent land slop <br /> `i,moo' (see figure D-34) 511 - <br /> . <br /> h. Downslope width = downslope multiplier C \ ' - �� , ) Upe:lopeiWidth(GFd) 3.1 5S <br /> (G2g) times downslope mound height(G2f) 311 <br /> X1.2"i x 4.0 ft = III) ft i3 s - �o' Rock Bed <br /> I Upslope fWidlh(G2d) �y,dth(D2 __ , Upslope fwidth(G2d) <br /> i. Select the greater of Cl and G2h as the Letteth(D ) 3� <br /> downslope width: . .0 ft 1 N 'Downslope Width(G2i) O ft <br /> j. Total mound width is the sum of upslope Absorption WidthcF) - ' :_________3„, <br /> width (G2d)width plus rock layer width <br /> (D2)plus downslope width (G2i) ' Total Length(G2k) ri,.) ft <br /> 1) ft+ 10 ft + 0 ft= 3 0 ft <br /> k. Total mound length is the sum of upslope width (G2d) <br /> plus rock layer length (D3) plus upslope width (G2d) <br /> ') ft+ 3r) ft+ ') ft = 61 feet <br /> acs, 9 9 Final Dimensions: <br /> 3 "2 X (o 40 - ` _ <br /> I hereby certify that I have completed this work in accordance with applicable ordinances, rules and laws. <br /> r_ <br /> /` - (signature) ' 3c)Li (license#) '`6 •I a-(RN 0 (date) <br />