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F. ABSO- • ION WIDTH <br /> 1. Abso •ti•n width -•uals absorption ratio(see Figure D-33)times rock layer width <br /> x 10.0 ft = 15.0 ft <br /> G. MOUND -LOPE WIDTH&LENGTH(Greater than 1%) <br /> 1. Downslope absorption width=absorption width minus rock layer width <br /> 1k5 feet - 10 feet= 5 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 /> 3i ft - 1.5 ft= 1.5 feet <br /> I <br /> b.Mound height at the upslope edge of rock layer=depth of clean sand for separation(G2a) <br /> at upslopEr edge plus depth of rock layer(1 foot)to depth of cover(1 foot) <br /> 1.5 ft+1ft+1 ft= 3.5 feet <br /> c.Upslope berm multiplier based on land slo.- see figure D-34) <br /> Select berr#i multiplier of 3.03 <br /> d.Upslope width=berm multiplier(G2c)times upslope mound height(G2b): <br /> 3.03 x 3.5 ft = 10.6 feet <br /> 13-34 LOPE MULTIPLIER TABLE <br /> Land f UPSLOPE DOWNSLOPE <br /> Sloppr, multiplirrsforvarious mulfiplieisforvuious <br /> Li <br /> 90 slope ratios slope ratios <br /> 3 1 4:1 5:1 6:1 7:1 8:1 3:1 4:1 5:1 6:1 7:1 <br /> 0 3 4.0 5.0 6.0 7.0 8.0 3.0 4.0 5.0 6.0 7.0 <br /> 1 2 1 3.85 4.76 5.66 6.54 7.41 3.09 4.17 5.26 6.38 7.53 <br /> 2 2 3 3.70 4.54 5.36 6.14 6.90 3.19 4.33 5.56 6.82 8.14 <br /> 3 2. 3.57 435 5.06 5.79 6.45 330 4.54 5.88 732 8.86 <br /> 4 2. 8 3.45 4.17 4.84 5.46 6.06 3.41 4.76 6.25 7.89 9.72 <br /> 5 241 333 4.00 4.62 5.19 5.71 3.53 5.00 6.67 857 10.77 <br /> 6 2.54 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 5.13 3.80 5.56 7.69 1034 13.73 <br /> 8 2.42 3.03 3.57 4.05 4.49 4.86 3.95 5.88 8.33 11.54 15.91 <br /> 9 2 2.94 3.45 3.90 4.30 4.65 4.11 6.25 9.09 13.04 18.92 <br /> 10 23 2.86 333 3.75 4.12 4.44 429 6.67 10.00 15.00 2333 <br /> 11 2.2 2.78 3.23 3.61 3.95 4.26 4.48 7.14 11.11 17.65 30.43 <br /> 12 2.2 2.70 3.12 3.49 3.80 4.08 4.69 7.69 12.50 21.43 43.75 <br /> DOWNSLOP <br /> e.Drop in ele ation=rock layer width(D2)times percent landslope(C5)/100 <br /> 10 ft x 8 % /100: 0.8 feet <br /> f.Downslope round height=depth of dean sand for slope difference(G2e) <br /> at downslope rpck edge plus the mound height at the upslope edge of rock layer(2b) <br /> 0.80 ft + 3.5 ft= 4.3 feet <br /> g.Downslope rm multiplier based on percent land slope(see Figure D-34) 3.95 <br /> h.Downslope idth=downslope multiplier(G2g)times downslope mound height(G2f) <br /> 3.95 x 4.3 = 17.0 feet <br /> i.Select greater of G1 and G2h as the downslope width 17.0 feet <br /> j.Total mound uiidth is the sum of upslope(G2d)width plus rock layer width(D2)plus downslope width(G2i) <br /> 10.6 ft+ 10.0 ft+ 17.0 ft= 37.5 feet <br /> k.Total mound I ngth is the sum of upslope width(G2d)plus rock layer length(D3) <br />