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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 <br /> .7 ft- in ft = I '? 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 f „' feet <br /> b. Multiply rock layer width by landslope l f4►ot:'Cover <br /> to determine drop in elevation; ' foot Re :ed <br /> Slope Difference Separation r feet <br /> 10 X %i 100 = . L- feet Slope Difference : et <br /> upslope Width <br /> c. Add depth of dean sand for separation (2a) 1�feet ROCK Bed Width <br /> at upslope edge,depth of rock layer(1 foot) to depth of _ID_feet Downslope Width <br /> AS- <br /> cover(1 foot) to find the mound height at the upslope edge 1ee1 <br /> of rock layer; <br /> I. ft + lft + lft= feet <br /> d. Enter table with landslope and upslope dike ratio. <br /> Select dike multiplier of 3.4 <br /> e. Multiply dike multiplier by upslope mound height <br /> to find upslope dike width: x 2.1-1.c= 1 a feet <br /> f. Add depth of dean 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 /> 3.S ft+ ,Lt ft = 3.07 feet <br /> g. Enter table with landslope and downslope dike ratio. <br /> Select dike multiplier of L.4 ,') to <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 3 .q x 4.1 t = )4 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; - 79 - <br /> i feet <br /> UDSIODI W10tn - <br /> j. Total mound width is the sum of <br /> upslope dike (G.2e) width plus rock r <br /> t> ;>:::;.:xif:;ee:[:t:::;::::•- _.'•:l:eO>.2..Yk olio f W..?.IOIni...?..i..: Man <br /> > <br /> layer width (D.2) plus ai uos!=e v. <br /> f+e<: <br /> o <br /> downslope dike width(G.2i); <br /> )1_ ft+ )0 ft + lc) ft = y) feet ie �' <br /> t DOWSS10De WIOtn <br /> k. Total mound length is the sum of <br /> upslope dike width (G.2e) plus rock layer <br /> length (D.3) plus upslope dike width (G.2e); <br /> 1a. ft + 5.5 ft + 1a. ft = '), feet <br /> oj3 _ <br /> /°7 .}- 5 + 93 rote;Lengtn <br /> Downslope e:pslope <br /> 3:1 4:1 5:1 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1 <br /> %elope <br /> 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 1 349 4.17 5.26 6.38 7.53 2.91 3.85 4.76 5.66 654 7.41 <br /> 2 3.19 435 3.56 6.82 8.14 2.83 3.70 4.54 5.36 6.14 6.90 <br /> 3 330 434 3.88 7.32 8.86 2.75 3.57 4.35 5.06 5.79 6.45 <br /> 675 _7.89 9.72 268 . 4.17 4.84 5.46 6.06 <br /> 5 353 �4D �- 857 ]077� c.61 4.00 4.62 5.19 571 <br /> 6 3.66 5.26 7.14 9.38 12.07 2.54 3.23 3.85 4.41 4.93 5.41 <br /> 7 380 5.56 7.69 10.34 1373 2.48 3.12 3.70 413 4.70 5.13 <br /> 8 3.95 5.88 833 1154 15.91 2.42 3.03 357 4.05 4.49 4.88 <br /> 9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90 430 445 <br /> 10 419 6.67 10.0 15.00 2333 231 2.86 3.33 3.75 4.12 4.44 <br /> 11 4.48 7.14 11.11 17.65 30.43 2-26 2.78 313 3.61 3.95 4.26 <br /> 12 449 7.69 1250 21.43 43.75 221 2.70 3.12 3.49 310 446 <br />