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- Gb DOWNSLOPE DIKE WIDTH <br />1. If landslope is 2.9 percent or less, basal width includes both the <br />upslope and downslope dike widths, <br />2. <br />Calculate minimum mound size based on geornnetery: <br />a. Determine depth of clean sand fill at upslope edge of rock <br />layer: Separation _ I feet <br />b. Multiply rock layer width by landslope to determine drop <br />in elevation; Slope Difference <br />x C % + 100 4 _ feet <br />c. Add depth of clean sand depth of clean sand for u <br />separation of upslope edge (2a) to depth of rock layer to <br />rock depth and the depth of cover to find the total mound <br />height at upslope edge of rock layer; <br />- 1- ft + 1 ft + 1 ft = 3 feet <br />d. Enter table on page bottom with landslope and upslope <br />dike ratio. Select dike multiplier of _ 1, 0 <br />e. Multiply dike multiplier by upslope mound height <br />to get upslope dike width: qO x _s- _ /Q feet <br />f. Add the depth of slope difference (2b) to the upslope <br />height to get the downslope height 1_+&`=_-7__feet <br />g. Enter table on page E-18 with landslW116 <br />a and downslope <br />dike ratio. Select dike multiplier of <br />h. Multiply dike multiplier by downslope mound height <br />to get downslope dike width: -�i- x -3-- = /.') feet <br />i. Mininmum'mound width is the sum of upslope dike <br />width plus rock layer width plus downslope dike width; <br />Ll ft + IE ft + / A ft = feet <br />j. Subtract the Minimum width G.i from the Absorption <br />width FA to find the Additional Downslope required for <br />Absorption <br />ft - - ft = feet Upsk <br />k. Add the Additional Downslope required for Absorptio <br />to the downslope dike width and recalulate the Total <br />Mound Width which is is the sum of upslope dike <br />width plus rock layer width plus downslope dike width <br />00 _ft + /0. ft +_-0'0 ft ='J-P feet <br />1. Total mound length is the sum of upslope dike width <br />plus rock layer length plus upslope dike width; <br />loft + 6 ft +'Ye�' ft = _ feet <br />1 A -&Corer <br />Ir�rt� a <br />_ reef Separ.um <br />fell Slug 1ldrerena <br />., fln� fled wl lh <br />�1ar <br />U-n.lupe 4YMrh <br />__Ieer <br />h- ---�'%tal Length _--&b <br />3:1 <br />4:1 <br />130w11s ope <br />5:1 <br />6:1 <br />7:1 <br />3:1 <br />4:1 <br />pslope <br />5:1 <br />kl <br />7:1 <br />B:1 <br />96 s10pe <br />0 <br />3.0 <br />4.0 <br />5.0 <br />60 <br />7.0 <br />3.0 <br />4.0 <br />5.0 <br />6.0 <br />7.0 <br />8.0 <br />1 <br />3A9 <br />4,17 <br />3'26 <br />6.38 <br />7S3 <br />2.91 <br />3.85 <br />4.76 <br />5.66 <br />6.54 <br />7.41 <br />2 <br />3.19 <br />4.35 <br />556 <br />6.82 <br />8.14 <br />2.83 <br />3.70 <br />4.54 <br />5.36 <br />6.14 <br />6.90 <br />3 <br />330 <br />4S4 <br />5.98 <br />7.32 <br />9.86 <br />2.7S <br />3S7 <br />435 <br />5.08 <br />5.79 <br />6.45 <br />4 <br />3.41 <br />4.76 <br />6.25 <br />7.89 <br />9.72 <br />2.69 <br />3.45 <br />4.17 <br />4.94 <br />5,46 <br />6.06 <br />5 <br />6 <br />353 <br />5A0 <br />6.67 <br />9.57 <br />10.77 <br />2.61 <br />3.33 <br />4.00 <br />4.62 <br />5.19 <br />5.71 <br />3.66 <br />5.26 <br />7.14 <br />9.38 <br />12.07 <br />2.54 <br />3.23 <br />3.85 <br />4.41 <br />4.93 <br />5.41 <br />7 <br />3.80 <br />556 <br />7.69 <br />10-34 <br />13.73 <br />2.48 <br />3.12 <br />3.70 <br />4.23 <br />4.70 <br />5.13 <br />8 <br />3.95 <br />5.98 <br />8.33 <br />11S4 <br />1S.91 <br />2.42 <br />Ma <br />357 <br />4.05 <br />4.49 <br />4.88 <br />9 <br />4.11 <br />625 <br />9.09 <br />I3.(4 <br />18.92 <br />2.36 <br />2.94 <br />3.4S <br />3.91) <br />4.30 <br />4AS <br />10 <br />429 <br />6.67 <br />10A <br />15A0 <br />2333 <br />2.31 <br />2.86 <br />3.33 <br />3.75 <br />4.12 <br />4A4 <br />11 <br />4A8 <br />7.14 <br />11.11 <br />17AS <br />30A3 <br />2.26 <br />2.78 <br />323 <br />3.61 <br />3..95 <br />426 <br />12 <br />4.69 <br />7.69 <br />12S0 <br />21A3 <br />43.75 <br />2.21 <br />2.70 <br />3.12 <br />3A9 <br />3.80 <br />4A8 <br />