Laserfiche WebLink
Otto Associates, Engineers and Land Surveyors, Inc. . , <br /> 1. Absorp6on width equals absorption ra6o(see Figure D-33)times rodc layer width <br /> 1.5 x 10.0 ft = 15.0 ft <br /> G. MOUND SLOPE WIDTH&LENGTH(Greater than 1%) <br /> 1. Downslope absorp6on width=absorption width minus rock layer width <br /> 15 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 j <br /> 3 ft ' 2 ft= 1 feet <br /> b.Mound height at the upslope edge of rock layer=depth of clean sand for separa�on(G2a) <br /> at upslope edge plus depth of rock layer(1 foot)to depth of oover(1 foot) <br /> 1 ft+1 ft+1 ft= 3 feet , <br /> c.Upslope beRn mul6plier based on land slope(see figure D-34) <br /> Select berm multiplier of 3.33 <br /> d.Upslope width=berm multiplier(G2c)6mes upslope mound height(G2b): <br /> 3.33 x 3 ft = 10.0 feet <br /> I�34 SlAP6 MULTIPLiER TABLE <br /> l�nd UPSIDFE p,piyy��pF <br /> Spopr wuih�Ims��v�;ow mulKpl;rrafer*arisus <br /> �' P� slope ra�i�s <br /> 3:1 9:1 5:1 �1 7r1 d:l 3:1 4: 5;1 6-.I 7: <br /> 0 3A 9.0 5,0 6.9 7.0 8.0 3A 9.Q S.D id 7.0 <br /> 1 2.91 3.a6 4J6 5Si b,yi 7 3I 3.09 9.17 S.�f i38 753 <br /> 2 2.�3 3.70 4.54 5.3i 6.1� b90 3J9 436 5.56 4.62 6.I4 <br /> 3 2.75 3.57 9.36 5.86 5J9 6.� 330 95i S.E6 7.3Z S.B6 <br /> 9 2r6d 3.48 4l7 48f 5.46 6.06 3.t1 �L76 6.25 7a! 932 <br /> 5 2bl 333 9.00 9.62 5,74 5.71 353 5.00 b.b: i57 idJ7 <br /> b 254 3.23 3.E6 44l �193 5.41 3.66 536 7.14 l.36 t2A7 <br /> 7 2M 3.I2 3J0 9,23 9J0 5.13 3�80 556 7.6! 193f 14J3 <br /> s 2.+12 3.03 3.57 9.dS A49 4,a6 3.95 5.eb 3,31 tiS4 15.91 <br /> 9 236 2.94 3.rt5 3.9� 930 4.64 9.11 8.25 9.04 t3.M if.92 <br /> 10 231 2.e6 333 3.75 9.M 9.44 9.29 6b7 10.0p 15.00 2333 <br /> il 22ti 2.?8 J.Z3 3.61 3.95 �126 �M 7,14 lLli �.tib 30,13 <br /> 12 221 Y.;O 3.12 3.!! 3�80 9.08 9.69 T.ti9 1250 2L13 4;.:5 <br /> DOWNSLOPE <br /> e.Drop in elevation=rock layer width(D2)times percent landslope{C5)/100 <br /> 10 ft x 10 i6 /100= 1.0 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 /> �•� � * 3 ft= 4.0 feet <br /> g.Downslope berm multiplier based on percent land slope(see Figure D-34) �p <br /> h.Downslope width=downslope multiplier(G2g)times downslope mound height(G2� <br /> 10 x 4.0 = 40.0 feet <br /> i.Select greater of G1 and G2h as the downslope width 40.0 feet <br /> j.Total mound width is the sum of upslope(G2d)width plus rodc layef width(D2)plus downslope width(G2i) <br /> 10.0 ft+ 10.0 ft+ 40.0 ft= 60.0 feet <br /> k.Total mound length is the sum of upslope width(G2d)plus rock layer length(D3) <br /> plus upslope width(G2d) <br />