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G. MOUND SLOPE WIDTH&LENGTH(Greater than 1%) <br /> 1. Downslope absorption width=absorption width minus rock layer width <br /> 24 feet - 10 feet= 14 feet <br /> 2. Calculate mound size <br /> UPSLOPE <br /> a.Determine depth of clean sand at upslope edge of rock layer=3 feet minus distance to restricting layer(C1) <br /> 3 ft - 1.5 ft= 1.5 feet <br /> b.Mound height at the upsiope edge of rock layer=depth of clean sand for separation(G2a) <br /> at upsiope edge plus depth of rock layer(1 foot)to depth of cover(1 foot) <br /> 1.5 ft+1ft+1ft= 3.5 feet <br /> c.Upslope berm multiplier based on land ; ••= see figure D-34) <br /> Select berm multiplier of 3.33 <br /> d.Upsiope width=berm multiplier(G2c)times upsiope mound height(G2b): <br /> 3.33 x 3.5 ft = 11.7 feet <br /> t)-3t SLOPE MULTIPLIER TABLE <br /> ,PStoPE d�a rtrfmuh1ien ,Woa,lipr mulr ort ui <br /> 3:1 4:1 51 6:1 71 01 31 41 51 6:1 71 <br /> 0 3.0 4.0 5.0 0.0 7.0 80 3.0 4.0 5.0 6.0 7.0 <br /> 1 2.91 3.85 4.76 5466 6.54 7.41 33.09 4.17 516 638 7.53 <br /> 2 2.83 3.70 434 5.34 6.14 6.90 3.19 435 556 6.82 8,14 <br /> L75 357 4.35 5.08 5.79 6.45 3.30 4.5.4 558 7.32 8.84 <br /> 4 2.68 3.45 4.17 4.84 5.46 6.06 3,41 4.76 6.25 7.89 9.72 <br /> 5 2.61 333 4.00 4.62 5.19 5.71 3.53 5.00 0.67 0.57 10.77 <br /> 6 231 3.23 3.85 4.41 4.93 5.41 3.66 5.26 7.14 9.38 12.07 <br /> 7 2.48 3.12 3.70 4.23 4.70 5.1.3 3.10 5.56 7.69 10.34 13.73 <br /> 8 2.43 3.03 3.57 4.05 4.49 4.118 393 8.38 831 1134 15.91 <br /> 4 236 2.04 3.45 .090 4.30 4.65 4.11 6.25 41.09 13.04 10.92 <br /> 10 231 2.06 3.33 3.75 4.12 4.44 4.29 0.67 10.00 15.00 20.33 <br /> 11 2.26 2,78 3.23 3.01 3.93 4.2(1 4,48 7,14 11.11 17.65 30.4.3 <br /> 12 2.21 2.70 3.12 3.49 1.00 440 4.89 7.69 1230 2143 43.75 <br /> DOWNSLOPE <br /> e.Drop in elevation=rock layer width(D2)times percent landslope(C5)/100 <br /> 10 ft x 5 16 /100: 0.5 feet <br /> f.Downslope mound height=depth of clean sand for slope difference(G2e) <br /> at downslope rock edge plus the mound height at the upslope edge of rock layer(2b) <br /> 0.50 ft + 3.5 ft= 4.0 feet <br /> g.Downslope berm multiplier based on percent land slope(see Figure D-34) 5 <br /> h.Downslope width=downslope multiplier(G2g)times downslope mound height(G2f) <br /> 5 x 4.0 = 20.0 feet <br /> i.Select greater of G1 and G2h as the downslope width 20.0 feet <br /> j.Total mound width Is the sum of upsiope(G2d)width plus rock layer width(D2)plus downslope width(G21) <br /> 11.7 ft+ 10.0 ft+ 20.0 ft= 41.6 feet <br /> k.Total mound length is the sum of upslope width(G2d)plus rock layer length(D3) <br /> plus upslope width(G2d) <br /> 11.7 ft + 62.5 ft+ 11.7 ft= 85.8 ft <br /> 1 Final Dimensions 41.6 ft x 85.8 ft <br />