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F. ABSORPTION WIDTH <br /> 1. Absor tion width uals absorption ratio(see Figure D-33)times rock layer width <br /> 2 x 10.0 ft = 20.0 ft <br /> G. MOUND SLOPE WIDTH 8�LENGTH(G�eaterthan 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+ 1ft= 3.5 feet <br /> c.Upslope berm multiplier based on land slo e(see figure D-34) <br /> Select berm multiplier of 3.23 <br /> d. Ups�ope width=berm multiplier(G2c)times upslope mound height(G2b): <br /> 3.23 x 3.5 ft = 11.3 feet <br /> D-.9+Ic SI�PE MULTIPLifi[�TABLTs <br /> i.nd crrsLorB nowNsz.or8 <br /> s� �ti��m�.�d. ������,�� <br /> :A� �*�.an. ��.n�. <br /> 3:1 9[1 5:1 6:1 7:1 S:1 3:1 9C1 53 6:1 7:1 <br /> 0 3� 4D S� 6D 7D sD 3D 4D SD 6D 7� <br /> 1 231 3d6 4716 S�fi 654 7�1 3�9 417 5Z6 6�6 7S3 <br /> 2 2di 39D �L.S� 5�6 614 69D 314 JL16 55E 6d2 S14 <br /> 3 2.75 3�J 41B 5�6 5.74 iA6 9�D 454 Sd6 7SZ sd6 <br /> 4 2,66 8+l6 417 48� SA6 6�6 3�41 476 6T5 7d9 9.72 <br /> S 2Ji1 3�3 40D 4b2 S1! 5.71 353 S�D 6I� S9 lUT1 <br /> 6 2S! 323 3a6 411 443 S�l 3I6 SZB 7.14 936 73�0 <br /> 7 2.l6 l.72 3�D 4�3 47D 5.11 3aD 556 7I�9 1U�4 13.T3 <br /> s 2d2 3Ai 3�tJ M6 4�49 4S6 39B Sd6 S�3 115! 1591 <br /> 9 2�6 29! 3A6 3SD 43D 46Fi 411 6S5 9�9 73L4 I��. <br /> 10 231 2d6 3�3 3.75 472 4A4 429 6� LII�D IS�D ?333 <br /> 11 226 2.T� !13 3�61 395 4]b 4ilb 7.14 1111 17�66 'JO�L3 <br /> 12 211 2.70 3.71 3A4 3.A0 4A6 4b4 Tb4 1Z50 21�l3 93.TS <br /> DOWNSLOPE <br /> e. Drop in elevation=rock layer width(D2)times percent landslope(C5)/100 <br /> 10 ft x 6 % /100= 0.6 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 /> 0.60 ft + 3.5 ft= 4.1 feet <br /> g.Downslope berm mulbplier based on percent fand slope(see Figure D-34) 5.26 <br /> h.Downslope width=downslope multiplier(G2g)times downslope mound height(G2� <br /> 5.26 x 4.1 = 21.6 feet <br /> i.Select greater of G1 and G2h as the downslope width 21.6 feet <br /> j.Total mound width is the sum of upslope(G2d)width plus rodc layer width(D2)plus downslope width(G2i) <br /> 11.3 ft+ 10.0 ft+ 21.6 ft= 42.8 feet <br /> k.Total mound length is the sum of upslope width(G2d)plus rodc layer length(D3) <br />