Laserfiche WebLink
� f <br /> Otto Associates, Engineers and Land Surveyors, Inc. <br /> F. ABSORPTION WIDTH <br /> 1. Absorption width equals absorption ratio(see Figure D-33)times rock layer width <br /> 2 1 x 10;0 ft = 20.0 ft <br /> G. MOUND SLOPE WIDTH&LENGTH(greater than 1%) <br /> 1. Downslope absorption width=absorption width minus rock layer width <br /> 20 feet - 10 feet= 10 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 upslope edge of•rock layer=depth of clean sand for separation(G2a) <br /> at upslope edge plus depth of rock layer(1 foot)to depth of cover(1 foot) <br /> 1.5ft+1ft+1 ft= 3.5 feet <br /> c.Upslope berm multiplier based on land slope(see figure D-34), <br /> Select berm multiplier of 4 <br /> d Upslope width=berm multiplier(G2c)times upslope mound.height(G2b): <br /> 4 x 3.5 ft = 14.0 feet <br /> D-S& .SLOPEMU1TJ;PLIERTABIX <br /> Lmd Upswrt DFE <br /> Fl+l owlGpli�f�"' us mul.��itnsfarvumu3 <br /> to o ■Mpa r w. pe ruiea <br /> 24 ad Ad Aj 50 ki T: <br /> 8 3.6 Oil 5.0 6.8 7.8 8.0 3.0 49 5 0 Gil 7.0 <br /> 1 "1 3J68 496 8.66 654 7A1 3.00 417 516 6.36 7.53 <br /> 2 2.63 370 454 536 6.14 698 ' 3.19 935 5.56 6$2 6.14 <br /> 3 235 357 439 5A0 5.79 4.95 MV 454 3.80 732 616 <br /> 4 2.68 3A6 4.17 4..8.4 5x16 6.06 3.4i 4.76 6.25 789 9.72 <br /> 5 Lfil 3.33 4118 4.62 5.54 On 353 SAO 6A7 S37 10J? <br /> 6 2M 3.23 3.85 4.41 453 5.91 3.66 526` 7.14 936 12.4:* <br /> 7 2A6 3.12 3.70 4.23 4JG 5.13 3.88 SAS 7A9 10.33 13JI <br /> 8 2.42 3.03 3.57 4AS 4.rO 9.88 , 3.95 SM 833 1154 1591 <br /> i <br /> 9 236 294 AM 3A0 438 '. 4.13 6.23 9.09 13M M92 <br /> 10 231 2A16 333 336 4.12 4.44 419 6.0 Ifl90 ISM 2333 <br /> 11 2.26 2.78 3.23 3AI 3.98 4.26 4A8 7.14 1111 17.6'5 30.43 <br /> 1,1 <br /> 12 x.21 2.70 3.12 3.49 3.0 4 4.h9 5&+1 xL43 0.75 <br /> DOWNSLOPE <br /> e.Drop in elevation=rock layer width(D2)times percent landslopo(C5)/100 <br /> 10 ft x 5 'Yo /,100: 0.5 feet <br /> x, <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 bene multiplier based on percent land slope(see Figure D-34) 6.67 <br /> h.Downslope width=downslope multiplier(G2g)times downslope mound height(G20 <br /> 6.67 x 4.0 = 26.7 feet <br /> I.Select greater of G1 and G2h as the downslope width 26.7 feet <br /> j.Total mound width is the sum of upslope(G2d)width plus rock layer width(D2)plus downslope width(G2i) <br /> 14.0 ft+ 10.0 ft+ 26.7 ft= 50.7 feet <br />