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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 /> 2-L" ft-eft= _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 ). d feet <br /> b. Multiply rock layer width by landslope ' '°dt c°".r. <br /> to determine drop in elevation; t feet Re ed <br /> Slope Difference <br /> Separation feet <br /> l x Z %-1-100= feet Slope Difference at <br /> UpsloDe Width <br /> c. Add depth of clean sand for separation (2a) J1-feet 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 -4L feet <br /> of rock layer; <br /> /.e) ft+ 1ft + Ift= 3.0 feet <br /> d. Enter table with landslope and upslope dike ratio. <br /> Select dike multiplier of 3 -5,n <br /> e. Multiply dike multiplier by upslope mound height <br /> to find upslope dike width: 3.0 x_3,v..o =_LL 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(20 to find the downslope height; <br /> -7.o ft+._ft= 3.3 feet I <br /> g. Enter table with landslope and downslope dike ratio. <br /> Select dike multiplier of 4:S L/ <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 3.3 x 4.94 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 /> feetODS-JJ� ae <br /> 1. Total mound width is the sum of ► i <br /> loan <br /> upslope dike (G.2e)width plus rock IV,(t,4 Width <br /> layer width (D.2)plus a Uosloo.Midt� UDt1Ge.wldtq <br /> downslope dike width(G.2i); 3 t' "°` <br /> teat I <br /> o E i <br /> _ft+ I0 ft+ ft feet <br /> k. Total mound length is the sum of Cuw f e to <br /> upslope dike width (G.2e)plus rock layer 1 <br /> length (D.3)plus upslope dike width (G.2e); <br /> _)ft+eft+ 1I ft= <br /> feet f <br /> I q + L� + - /off e� + <br /> Total Lengtn•/0j;t � <br /> I <br /> Downslope Lpslope <br /> 3:1 l•1 5:1 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1 <br /> I <br /> %slope <br /> 0 3.0 44 5.0 6.0 7.0 3.0 4.0 5.0 60 7.0 84 <br /> 1 349 4.17 526 638 7M 2.91 3.85 4.76 5.66 654 7.41 <br /> 2 3.19 135 556 6.82 8.14 28.1 456 536 614 6.90 <br /> 3 �3o r 388_ 732 8.86 2T Z. 4.35 5.08 5.79 6.45 <br /> 4 3.41 4.76 615 -- bd` 3.45 4.17 4.86 5.46 6.06 <br /> 5 353 5.00 6.67 857 10.77 261 3.33 4.00 4.62 5.19 51"1 <br /> 6 396 516 7.14 938 12.07 254 3.23 3.85 4.41 4.93 5.41 <br /> 7 390 556 7.69 I034 1373 248 3.12 3.70 423 L70 5.13 <br /> 8 3.95 5.86 833 1154 1591 242 3.01 3.57 4.05 4.69 498 <br /> 9 4.11 625 949 13.04 18.92 236 294 3.4.5 3.90 430 4b5 <br /> 10 429 667 10.0 15.00 2333 231 286 333 3.75 4.12 4.44 <br /> 11 4.48 7.14 11.11 17.65 30.43 226 278 323 3.61 3.95 426 <br /> 12 4.69 7.69 1250 211A3 4375 221 211,0 3.12 3.49 3.80 4.06 <br />