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DOWNSLOPE DIKE WIDTH If landslope is 3% or more, subtract rock layer width from adsorption width to obtain minimum downslope dike toe for absorption: .c.-7 ft- Jr) ft = 17 feet 2. Calculate minimum mound size based on geometery: a. Determine depth of clean sand fill at upslope edge of rock layer: Separation /. '2 feet b. Multiply rock Toyer width by landslope to determine drop ,,,,,„, in elevation; S!ope Difference :•:,:a 1,....," Jo x % + 100 = . (., feet c. Add depth of c can sand depth of clean sand forte"" -WINO jd I me Oh.. ; separation at upslope edge (2a) to depth of rock layer to ..1 " rock depth and the depth of cover to find the total mound ii"r height at upslope edge of rock layer; /.r) ft + 1 ft + 1 ft = �•7 feet d. Enter table on page bottom with landslope and upslope dike ratio. Select dike multiplier of ?..a"5 . e. Multiply dike multiplier by upslope mound height to get upslope dike width: Z;•7 x ?.A = 1 . feet f. Add the depth slope difference (2b) to the upslope height to get th downslope height 3.9 + • (., = 4 •3 feet • g. Enter table on age bottom with landslope and downslope dik ratio. Select dike multiplier of 5. p.ce . 1 I h. Multiply dike multiplier by downslope mound height to get downslope dike width: $3 x 5.�1. = 3 feet i. Compare the values of step G.1 and Step G.2.h. Select the • greater of the two values as the downslope dike width; '1 feet j. Total mound width is the sum of upslope dike Roc iiea'w d ti' ' fl'`' Iti.r.kip Dike Widii;_j width plus rock layer width plus downslope ' ' ' ;' ''`• :` : dike width; .. .. .. . .. . 1 1... ft + )u ft + ft = ys' feet Up,lope.iiik Wia;i;J'1'' ;Up iope'13lke'WIda.j k. Total mound length is the sum of upslope dike width plus rock layer length plus etoW^elOP'bI e:'widthf' ` Y g upslope dike width; Iz ft + ,rte ft + / D, ft = 0q feet i. : • 2, Total Length_2 '_ el f a ;� /0 1 /o1 Downslope • Up{slo • 3:1 4:1 5:1 61 7:1 3:1 4:1 S:1 6:1 7:1 8:1 A.slope f • 0 3.0 4.0 ' 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 1 3.09 4.17 I 5.26 6.38 7.53 2.91 3.65 4.76 5.66 6.54 7.41 2 3.19 4.35 I 5.56 6.82 8.14 2.83 3.70 4.54 5.36 6.14 6.90 3 330 4.54 5.88 7.32 8.86 2.75 3.57 4.35 5.08 5.79 6.45 4 3.41 1.76 6.25 7.89 9.72 • 2.68 3.45 4.17 4.84 5.46 6.06 5 333 5.00 6.67 8.57 10.77 2.61 3.32, 4.00 4.62 5.19 5.71 6._ ____ 3.66 C;.2C' 7.14 9.38 ._ 12.07 _234__ .._G13_) 3.85 4.41 4.93 5.41 7 3.80 5.56 7.69 10.34 13.73 2.48 3.12 3.70 4.23 4.70 5.13 8. .. .. 3.95 5.88 8.33 1134 15.91 2.42 3.03 357 4.16 • 4.49 4.88 t i' 9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90' 4.30 4.65 `'' ' 10 429 6.67 10.0 15.00 23.33 2.31 2.86 3.33 3.75 4.12 4.44 11 4.48 7.14 11.11 17.65 30.43 2.26 2.78 3.23 3.61 3.95 4.26 12 449 7.69 12.50 21A3 43.75 2.21 2.70 3.12 3.49 3.80 4.08 .