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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 /> a.L•'I ft- in ft = feet <br /> 2. Calculate Minimum mound size base on geometery: <br /> a. Determine depth of clean sand fill at upslope edge of rock <br /> layer: Separation ). S feet <br /> b. Multiply rock layer width by landslope teoe cover. <br /> to determine drop in elevation; = teec Re ed <br /> Slope Difference Seperetloa feet <br /> O x�Z %=-100 =, feet slept Ctfterent o o et <br /> UpsloDe Width <br /> c. Add depth of clean sand for separation (2a) 12 feet Rock Bed width <br /> at upslope edge,depth of rock layer(1 foot) to depth of J]L-feet Downslope Width <br /> cover (1 foot) to find the mound height at the upslope edge Leet <br /> of rock layer; <br /> )Sft+ lft+ lft= 3,Sfeet <br /> d. Enter table with landslope and upslope dike ratio. <br /> Select dike multiplier of 2-6r) <br /> e. Multiply dike multiplier by upslope mound height <br /> to find upslope dike width: 3.S x 3.57 = ) R 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 (20 to find the downslope height; <br /> Z ,5' ft+ , 'ft=-2..�feet <br /> g. Enter table with landslope and downslope dike ratio. <br /> Select dike multiplier of 4 .5 <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 3. le_x y`!-=-L�_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 /> feet :. .: <br /> - UDs100s Wldtn <br /> hs a <br /> wi th s the s <br /> t <br /> JTotal mound d <br /> . Tot o <br /> upslope dike (G.2e)width plus rock trecl e.0 Width <br /> )D 1L(¢�test <br /> layer width (D.2)plus o UDs1009 Wlacn uoSleoe w�atn <br /> 3 ��feet11 1 _teat <br /> downslope dike width(G.2i); _ E <br /> I-z. ft+eft+j ft= feet <br /> ` <br /> Downslope Wletn <br /> k. Total mound len is the sum of Leet <br /> upslope slo dike width (G.2e)plus rock laver ' ' '' '` <br /> length (D.3)plus upslope dike width (G.2e); <br /> �I ft+��ft + 1a, ft= 9 feet I <br /> Toter Length-/Da'- <br /> Vowmlope UPSIOPe <br /> 3:1 4.•1 5:1 6:1 7:1 3:1 4:1 5:1 6:1 711 8:1 <br /> %slope <br /> 0 3.0 to 5.0 60 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 1 3.09 4.17 526 638 753 2.91 3.85 4.76 5.66 656 7A1 <br /> 2 3.19 4.35 5.56 6.312 8.14 2.83 �,Za'L 456 536 6.14 6.90 <br /> 3 ??0 �. ¢,54� 588.^. %32 b.&6 2T �3?71 431 5.08 5.19 6Ai <br /> 4 3.41 476 625 7.89 _ 1SZ 268 -3.45 4.17 t86 5.46 6.06 <br /> 5 3S3 5.00 6.67 8357 1077 261 333 4.00 4.62 5.19 571 <br /> 6 386 526 7.14 938 12,07 254 323 3.855 4.41 4.93 5.41 <br /> 7 380 556 7.69 1034 1373 248 3.12 3.70 413 4.70 5.13 <br /> 8 3.95 5.88 833 1154 15.91 242 3.03 357 4.05 4.0 488 <br /> 9 4.11 625 9.09 13.06 18.92 236 294 3.45 3.90 430 4SS <br /> 10 419 6.67 10.0 15.00 2333 231 286 333 3.75 4.12 4.44 <br /> 11 4.48 7.14 11.11 17.65 30.43 226 278 3.23 3.61 3.95 426 <br /> 12 4.69 7.69 1250 21.43 43.75 221 270 3.12 3.49 3.80 4.08 <br />