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• <br /> G. I?OWNLOPE DIICE WIDTH • <br /> ' 1. If landslope is 3% or more,subtract rock layer width from <br /> ,) <br /> adsorption width to obtain minimum downslope dike toe <br /> a,,,") ft - )D ft = 10 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 1. c feet <br /> b. Multiply rock layer width by landslope . r foot'Cover. <br /> 1 . : <br /> to determine drop in elevation; OMR toot R ed <br /> Seperetlon .L�.� feel• • • <br /> Slope Difference n t, <br /> Slope Difference t. et <br /> /0 X <-67 %-1- 100 = , ' ' feet upslope width <br /> C. Add depth of clean sand for separation (2a) feet <br /> Rock Bed Width <br /> at upslope edge, depth of rock layer(1 foot) to depth of _ID_feet Downslope Width <br /> cover (1 foot) to find the mound height at the upslope edge -u' feet <br /> of rock layer; <br /> /.: ft + lft + lft= 3.S feet - <br /> d. Enter table with landslope and upslope dike ratio. <br /> Select dike multiplier of --z>.o- . <br /> e. Multiply dike multiplier by upslope mound height <br /> • to find upslope dike width: .--- .< x 3.o3 = // feet <br /> f.. Add depth of clean sand for slope difference (2b) at • <br /> downslope edge, to the mound height at the upslope edge <br /> of rock layer (2c) to find the downslope height; <br /> Z.< ft + . V ft = u.3 feet <br /> .... ,D g. Enter table with landslope and downslope dike ratio. <br /> Select dike multiplier of .<• 4S5 <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: S,,dV x L1.3 = aS feet <br /> i. Compare the values of step G.1 and Step G.2h Select the <br /> greater of the two values as the downslope dike width; _ 91' <br /> a." feet 1 <br /> UDsI De Y/fOln <br /> j. Total mound width is the sum of I 1 fest <br /> upslope dike (G.2e) width plus rock Reck aad width # <br /> layer width (D.2) plus `vl I f..t • • • • • • • <br /> v UDSIODe MIOtn UDs1oDe WIOtn <br /> downslope dike <br /> width G <br /> .21 <br /> • _ <br /> i i:: is <br /> )) ft + /I ft + as ft = 4 • feet .7-:' !!:!IniniiiiMIMiiiffiniffiliiiliiining.Miiiiiiiiinigig,i;I:iiliggiiiiMIMON <br /> Downslo •Wlatn <br /> k. Total mound length is the sum of fest <br /> upslope dike width (G.2e) plus rock layer < <br /> length (D.3) plus upslope dike width (G.2e); <br /> H ft + SS ft + 1) ft = '79 feet <br /> aJc -t- S5 + a-S io s- /c.- <br /> 10151Lenptn <br /> Downslope Upsiope <br /> 3:1 4.1 5:1 61 7:1 3:1 4:1 5:1 6:1 7:1 ea <br /> %slope <br /> 0 3.0 40 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7,0 8.0 <br /> 1 339 4.17 5.26 6.38 753 2.91 3.85 4.76 5.66 6.54 7.41 <br /> 2 3.19 435 556 682 8.14 2.83 3.70 454 5.36 6.14 6.90 <br /> 3 330 454 5.88 7.32 5.86 2.75 357 435 5.06 5.79 6.45 <br /> 4 3.41 4.76 625 7.89 9.72 268 3.15 4.17 484 5.46 6.06 <br /> _/Ji 5 3.53 SAD 667 8.57 1077 2.61 333 4.00 4.62 5.19 571 <br /> 6 366 5.26 7.14 938 12.07 254 323 3.85 441 4.93 5.41 <br /> 7 3.93 556 7.69 10.34 1373 2.48 3.12 3.70 4.23 4.70 5.13 <br /> 8 3.95 C_5.88 ` 833 11.54 15.91 242 C3.03") 357 4.05 4.49 458 <br /> 9 _4.11 62S 9.09 13.04 18.92 236 294- 3.45 3.90 4.30 4.65 <br /> 10 429 6.67 10.0 15.00 23.33 2.31 2.86 333 3.75 4.12 4.44 <br /> 11 4.48 7.14 11.11 17.65 30.43 2.26 2.78 323 3.61 3.95 426 <br /> 12 4.69 769 12-50 21.43 43.75 2.21 2.70 3.12 3.49 3.83 4.08 <br />