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G. DOWNSLOPE DIKE WIDTH <br /> 1.' If laridslope is 3% or more,subtract rock layer width from , <br /> -adsorption width to obtain minimum downslope dike toe for <br /> absorption: <br /> A(,.2 ft-eft= feet <br /> 2. Calculate minimum mound size based on geometery: <br /> a. Determine depth of clean sand fill at upslope edge of rock <br /> layer: Separation a•0 feet <br /> b. Multiply rock layer width by landslope to determine drop <br /> in elevation;Slope Difference <br /> 10 x <br /> -2-%+ 100= •3 feet <br /> ..,. ..t. <br /> c. Add depth of clean sand depth of clean sand for "'�''•� - <br /> separation at upslope edge(2a)to depth of rock layer to <br /> rock depth and the depth of cover to find the total mound <br /> height at upslope edge of rock layer; <br /> 9..0 ft+ 1 ft+ 1 ft= H-0 feet <br /> d. Enter table on page bottom with landslope and upslope 3.0 w•-s< <br /> dike ratio. Select dike multiplier of 3 .S,) . <br /> 3 .© y- 3.5') <br /> e. Multiply dike multiplier by upslope mound height <br /> to get upslope dike width: 4.D x 342 =_,j_�_feet <br /> f. Add the depth of slope difference(2b) to the upslope <br /> height to get the downslope height <br /> ti,o + - Z_-- L4 Q feet <br /> g. Enter table on page bottom with landslope and <br /> downslope dike ratio. <br /> Select dike multiplier of L4.<4 . <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: L4'3 x-4,,-5q =3u feet <br /> L Compare the values of step G.1 and Step G.2.h. Select the <br /> greater of the two values as the downslope dike width, <br /> a, feet :::::r:.:tit:st:tit:::::: :•u tit.w.:t ::t•::•::�:_::,u•.t. <br /> Total mound width is the sum of upslope dike �aiWIAM ;. a waw- - .{.{•. <br /> : :•:y.:�.•»:Y:Y:••�Y SY tr«{«{Y•t{..�{«{«{«{«{.'r{«J;t{.;t{:;:'s•?{ <br /> width plus nock layer width plus downslope ••t::::t. ,•;t{st{:tt <br /> dike width; <br /> I `I ft+ 10 ft + ac) ft= Meet u D"WW <br /> k. Total mound length is the sum of upslope :•;��::�; �; .t ;,..:�:; � ;:y :j ::,.::• : ;::;;.: <br /> dike width plus rock layer length plus '•'•'''''''`''`'' :, r °'""''p' ` " `� 's'' <br /> upslope dike widthX. <br /> t:::::::�:s.•: ::::r.�. :.:::,r�•j <br /> _J-ft +�ft+ i y. ft= feet �.___,.�T eng* <br /> Vownslope <br /> 3:1 4.1 &11 &1 7:1 3:1 4:1 S:1 Ope dd 7:1 81 <br /> 0 3A 4A SA 60 7.0 &0 4.0 5.0 60 7A SA <br /> 1 30 4.17 5.26 633 7.51 2.91 3.55 4.76 5.66 654 7A1 <br /> 2 3.19 US536 6.62 5.14 2.63 434 5.36 614 6.90 <br /> _3__._. 330____jC:VV _.SA_ 7.32 L" 273 4.35 & S.79 6AS <br /> 4 3A1 476 6.257A9 M. UA 54_ 4.17 4. 5.46 6.06 <br /> S 333 5.00 667 5.57 10.77 261 333 4.00 4.62 S.19 5.71 <br /> 6 3A6 5.26 7.14 9.35 12.07 234 3.23 US 4.41 493 SAI <br /> 7 3A0 536 7.0 1034 13.73 245 3.12 3.70 4.23 4.705.13 i <br /> 5 3.95 SAS 533 1134 IS." 242 303 337 4.05 4.n 4A5 <br /> 9 4.11 6.75 9.09 13.04 1692 236 2.94 145 3.90 430 4A6 � <br /> 10 429 667 10.0 ISM 2333 231 2.56 3.33 3.75 4.12 4A4 <br /> 11 4A5 7.14 11.11 17AS 30A3 226 275 3.73 3.61 3.95 416 <br /> 12 4.59 7A9 1230 21A3 43.75 221 270 3.12 3.49 3.50 4.09 <br />