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F. ABSORPTION WIDTH <br /> 1. Abso tion width uals abso�p6on ratio(see Figure D-33)times rock layer width <br /> 2 x 10.0 ft = 20.0 ft <br /> G. MOUND SLOPE WIDTH&LENGTH(Greater than 1�0) <br /> 1. Downslope abso�ption width=absorption width minus rock layer width <br /> 20 feet - 10 feet= 10 feet <br /> 2. Calculate mound size <br /> UPSLOPE <br /> a.DeteRnine depth of clean sand at upslope edge of rock layer=3 feet minus distance to restricting layer(C1) <br /> 3 ft - 1.7 ft= 1.3 feet <br /> b.Mound height at the upslope edge of rock layer=depth of dean sand for separation(G2a) <br /> at upslope edge plus depth of rodc layer(1 foot)to depth of cover(1 foot) <br /> �.3ft+1ft+1ft= 3.3 feet <br /> c.Upslope berm multiplier based on land slo e see figure D-34) <br /> Select berm muldplier of 2.94 <br /> d.Upslope width=berm multiplier(G2c)times upslope mound height(G2b): <br /> 2.94 x 3.3 ft = 9.7 feet <br /> L3-34: SL.OPEMULTIPLiERTABLE <br /> land UPSI,OPE QOW\75L01'E <br /> Slo�e multiplit�storv�rious malliyiir�sforvuiour <br /> in.o alope ratios slope r�tios <br /> 3:1 4:1 S:l b:l T:1 8:1 3:1 4:1 5:1 6:1 7:1 <br /> 0 3�0 4A 5.0 6A TA 8.0 3.0 �LO SA 6A 7D <br /> 1 2.91 3�6 4.76 566 6.Sf 7.31 3.09 �.1^ 5.2ti 638 753 <br /> 2 2.63 3.i0 �1S1 5�O 6.l4 6.90 3.19 �L3� 5.54 6.A2 3.1�{ <br /> 3 2.i5 3.57 4Jo 5.OS 5.'1�l 6.�t5 330 4S1 5.86 732 B.Bti <br /> 9 2,66 3.� 4.17 4.6! SA6 6Ad 3.41 4:'6 6.25 '.89 9v 2 <br /> 5 2.b1 333 4A0 4.62 5.19 5.:1 353 5A0 6b7 8.S! IO.i7 <br /> G 2S{ 3.23 3.86 4.�1 4.'yS 5.41 3.b6 5.26 7.1� 936 12.Ot <br /> : 2.�6 3.t2 3.^0 �1.21 470 5.13 3.b0 556 7.b9 103�1 13J� <br /> B 2.�F2 3A3 3.5: 4JD6 4.�{9 4.�6 3.95 5.� 833 i 1St L5.71 <br /> 9 2.36 2.4f 3.�Ls 3.90 �L90 4.65 �1.11 6.25 9A9 13A4 Ib.92 <br /> !0 231 2.96 333 3.:� 4.12 4.4t 4.29 Bb7 IOAO I5.00 2333 <br /> ll 22ti 2.'d f23 3b1 3.95 4.26 � :'.ld il.11 77.45 30.43 <br /> 11 221 2.'0 3.12 3.d9 3�80 9.OB �.49 ^�ti9 1250 21.d3 �3.�5 <br /> DOWNSLOPE <br /> e.Drop in elevation=rock layer width(D2)times percent landslope(C5)/100 <br /> 10 ft x 9 �6 /100= 0.9 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 /> 0.90 ft + 3.3 ft= 4.2 feet <br /> g.Downslope berm multiplier based on percent land slope(see Figure D-34) 6.25 <br /> h.Downslope width=downslope multiplier(G2g)times downslope mound height(G2� <br /> 6.25 x 4.2 = 26.2 feet <br /> i.Select greater of G1 and G2h as the downslope width 26.2 feet <br /> j.Total mound width is the sum of upslope(G2d)width plus rocic layer width(D2)plus downslope width(G2i) <br /> 9.7 ft+ 10.0 ft+ 26.2 ft= 45.9 feet <br /> k.Total mound length is the sum of upslope width(G2d)plus rodc layer length(D3) <br />