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/ J <br /> ' .G.` 'DOWNSLOPE DIKE WIDTH <br /> 1. If landslope is 3% or more, subtract rock layer width from . • <br /> adsorption width to obtain minimum downslope dike toe for <br /> absorption: • ' <br /> -......_.,, a(...-) ft -, In ft = 1r) 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 /, P, feet <br /> b. Multiply rock layer width by landslope to determine drop . <br /> in elevation; Slope Difference ;:4%j ;::;:q 1 a-► <br /> ) o x 3 % - 100 = .'3 feet Inn <br /> c. Add depth of clean sand depth of clean sand for • �'�°'"�Olt <br /> ----arm _a.i tam.4aa...* <br /> separat;on at upslope edge (2a) to depth of rock layer to a' h"'"�� <br /> rock depth and the depth of cover to find the total mound w.,�... _,,__ <br /> height at upslope edge of rock layer; <br /> 1. Z ft + 1 ft + 1 ft = 3 .z feet <br /> d. Enter table on page bottom with landslope and upslope • <br /> dike ratio. Select dike multiplier of 3 • S? . <br /> e. Multiply dike multiplier by upslope mound height <br /> to get upslope dike width: .-)., x 3...s-/2= ) I feet • <br /> . f. Add the depth of slope difference (2b) to the upslope . <br /> height to get the downslope height . <br /> 3 .2 + ,3 = ,-- .... feet <br /> g. Enter table on page bottom with landslope and • <br /> downslope dike ratio. <br /> Select dike multiplier of .,S y . <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 3. .S x ti.S1. = / i., feet <br /> i. 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 /> 17 feet <br /> j. Total mound width is the sum of upslope dike Rocklkca'wdth ` 'p''`• '.Upsiorooi�wkdh L.. <br /> width plus rock layer width plus downslope "'`'''i:' 'r '''. '' '�`' <br /> dike width; .';� ,� . ti,.:,... <br /> ii , ft + Jo ft + 1 0 ft = 3 £S"feet uglop`ou.cewidth.j. I P'.p . . ,•.thJL _ <br /> '.0 to l3tke Width <br /> k. Total mound length is the sum of upslope <br /> . •� fbonsiop` bikeWidth <br /> _._dike width plus rock layer length plus .. <br /> upslope dike width; <br /> ft + ��, ft + ft = a feet � . .. .. . . . ... .... . � . .. .... .. .. ... <br /> 1 _I► ) _ftp_ Total Length 3 0 .4 <br /> 11 1 -) /0 /0a . <br /> •-z.mopc pslopc <br /> 3:1 4:1 5.1 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1 <br /> 9..lope <br /> 0 3.0 4.0 S.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 1 3.09 4.17 5.26 6.33 7.53 2.91 3.85 4.76 5.66 6.54 7,41 ' <br /> 2 3.19 4.3.5 5.56 6.81 8.14 2.83 .ZQ 4.54 5.36 6.14 6.90 <br /> 3 330 ( 4 4' .69 32 8.86 275 Q,s7) . 4.35 5.08 5.79 6.45 <br /> 4--�734r a./1 6.2i �F4----�T7� Z.NJ 3.41 4.17 4.64 5.46 6.06 <br /> 5 353 5.03 6.67 837 1C.77 2.61 3.33 4.00 4.62 5.19 5.71 <br /> 6 3.66 5.26 7.14 9.3A 12.07 2.54 3.23 3.85 4.41 4.93 5.41 <br /> 7 3.80 556 7.69 1034 13.73 2.4A 3.12 3.70 4.23 4.70 5.13 <br /> 8 3.95 5.68 8..13 11.54 15.91 2.4.2 3.03 337 4.05 4.49 4318 <br /> 9 4.11 625 919 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4.65 <br /> 10 429 6.(.7 100 1500 213) 2.31 2.96 3.33 3.75 4.12 4.44 <br /> 11 4.49 7.14 11.11 17.65 30.43 2.16 2.78 3.23 3.61 3.95 4.26 <br /> 12 444 7.64 12.',0 2111 4175 2.21 2.70 3.12 3.41 3.60 4A6 <br />