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DOWNSLOPE DIKE WIDTH <br /> I. If landslope is 3% or more,subtract rock layer width from <br /> adsorption width to obtain minimum downslope dike toe <br /> / i ft- /0 ft= S'►L, 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 / feet <br /> b. Multiply rock layer width by landslope t toot Cover <br /> to determine drop in elevation; <br /> I toot Rs •ed <br /> Slope Difference <br /> Separation feet <br /> /, /) x/7 %i- 100= i 7 feet slope Difference t <br /> uos pe width <br /> c. Add depth of clean sand for separation(2a) feet Reek kg Width <br /> at upslope edge,depth of rock layer(1 foot) to depth of feet Downslope Width <br /> cover(1 foot)to find themound height at the upslope edge 20-feet <br /> of rock layer; <br /> / ft+ lft+ lft= 3 feet <br /> d. Enter table with landslope and upslope dike ratio. <br /> Select dike multiplier of ,?, /L . <br /> e. Multiply dike multiplier by upslope mound height <br /> 3 <br /> to find upslope dike width: x __mound <br /> = q 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 /> . 7 ft+_eft= . ' 7 feet <br /> g. Enter table with landslope and downslope dike ratio. <br /> Select dike multiplier of ,‘.5-....5-40 . <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width�ii"x J = ZO 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; <br /> Z d feet <br /> UD,1 Wlelfl <br /> j. Total mound width is the sum of feel <br /> upslope dike(G.2e)width plus rock Rope pia WIDIe - - - <br /> /es felt <br /> layer width (D.2)plus o UC: •WIOIn - UDa •WlDlll <br /> do lope dike width(G.2i); a f eel lest <br /> 7- ft+ /0 ft+ Zo ft= /5q feet <br /> ,Dow IDW <br /> D.flelll <br /> k. Total mound length is the sum of ;; <br /> `' eat <br /> upslope dike width(G.2e)plus rock layer <br /> length(D.3)plus upslo a dike width (G.2e); <br /> V ft+ ZS' ft+ ft = Y3 feet <br /> Total Len015 <br /> Downslope Upslope <br /> 3:1 l-1 5:1 6:1 7:1 1:1 4:1 5:1 6:1 7:1 8:1 <br /> II.lope <br /> 0 3A l0 5.0 60 7.0 3.0 l0 5.0 60 7.0 8.0 <br /> I 3f19 4.17 5.26 638 757 291 3.15 4.76 5.66 656 7.41 <br /> 2 3.19 635 556 6.82 8.14 2.83 3.70 5.36 6.11 6.90 <br /> 3 3.30 156 5.88 7.32 186 2.75 357 .41$3.541. 5. 5.79 6.15 <br /> 3 3.41 6.76 6-25‘ 7.89 9.72 268 3.15 1.17 4.84 5.16 6.06 <br /> 5 351 5.00 .67 857 10.77 261 333 las l00 4.62 5.19 571 <br /> .41 183 Sst <br /> 3310, <br /> 14 9.38 <br /> 2.54 <br /> 3.70 4.23 <br /> 3 95 556 _. <br /> 7,69 <br /> - 1 15.0.34 91 2.12 ,.t 357 1.05 4.49 /d8 <br /> 9 6.11 6.25 9.09 13A1 18.92 2.36 294 3.45 3.90 130 165 <br /> 10 629 6.67 10.0 15.00 23.33 231 286 337 3.75 1.12 1.66 <br /> 11 4.48 7.14 11.11 17.65 30.13 2.26 2.78 3.13 3.61 3.95 116 64 <br /> 12 449 7.69 1250 21.43 13.75 2.21 2.70 3.12 3.19 3.80 I.OA <br />