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G. DOWNSLOPE BERM WIDTH slo�:- co�er�� _ 1. If landslope is 1% or more, subtract rock layer width from adsorption width ' Rock l' ';°�o� � � � to obtain minimum downslope berm toe C1eanSand 6"Topwil a� ft -�ft = /o feet atural Soil 2. Calculate Minimum mound Size a. Determine depth of clean sand fill at vPsio�w�a�n o��lo�wid�n upslope edge of rock layer: RO�W�d� Absorption Width Separation 3' - �- ft = 1 feet b. Add depth of clean sand for separation (2a) at upslope edge, depth of rock layer (1 foot) to depth of cover (1 foot) to find the mound height at the upslope edge of rock layer; I ft + lft + lft = 3 feet �a c. Enter table with landslope and upslope berm up��Pe w�acn ` ratio. Select berm multiplier of y.�o . ' � q - " p e o ' U slo eWidth P/�aueo�oap;; RockBed ?oDaubo�,,n UpslopeWidth d. Multiply berm multiplier by upslope mound � '� OVpppQppGO?S `"'d�' �" �'?opDo069b D, �� height to find upslope berm width: � dp9$tl�Atl a;o 0 oon��-0�4o Qe uD u 3 x �(,��_- � feet � : , � e. Multiply rock layer width by � ` � " F° , . Downslope Width �� landslope to determine drop in elevation; � � , nb��hon w�ach ir� � � �� x s %= 100 = . s feet . : . , , . , < f. Add depth of clean sand for slope Total Length �6 difference (2e)at downslope edge, to � the mound height at the upslope edge of rock layer (2d) to find the downslope height; �5c� ��G,t �,�� 3 ft + . s ft = 3� S feet �s�o �w�,s,..�,��c� s 5� g. Enter table with landslope and downslope berm ratio. Select berm multiplier of s.vv h. Multiply berm multiplier by downslope mound height to get BERM SLOPE MULTIPLIERS downslope berm width: 3�S x -S = !�! feet t�na DOWNSLOPE UPSLOPE 1. COITl are the values of ste Ci.l�_ Slope berm mulUplias[or various berm multipGers for various P P iu% berm slope rotlos berm slope ratios and Step G.2h�� Select the greater of the two values as the 4: :� � � � � downslope berm width; ! £s feet o s.o a.o s.o b.o �.o s.o a.o s.o 6.0 �.o g.o j. Total mound width is the sum of � 3.09 4.17 5.26 6.38 7.53 2.91 3.85 4.76 5.66 6.54 7.41 upslope berm (G.2d) 2 3.19 a.3s s.sb b.az s.ia z.s3 3.�o a.sa 5.36 6.14 6.90 . 3 330 4.54 5.88 7.32 8.86 2.75 3.57 435 5.08 5.79 6.45 wicith plus'rock layer width (D.2� 4 3.41 4.76 6.25 7.89 9.72 2.68 3.45 4.17 4.84 .5.46 6.06 plus downslope berm width(G.21�� 5 3.53 5.00 6.67 8.57 10.77 2.61 �33 � 4.62 5.19 5.71 �_ft + /D ft+ �ft = �8, feet 6 3.66 5.26 7.14 938 I2.07 2.54 3.23 3.85 4.41 4.93 5.41 k. Total mound length is the sum of upslope � 3.so s.s6 7.69 io.�a 13.73 z.as 3.12 3.�o a.zs a.�o s.i3 berm width (G.2d) plus rock layer length (D.3) 8 3.95 s.ss 833 ,i.sa is.9i Z.a2 3.03 3.s� a.os a.a9 a.as plus upslope berm width (G.ZC�� 9 4.11 6.23 9.09 13.04 18.92 236 2.94 3.45 3.90 4.30 4.65 `'�w�'E 16� ft + _s�ft + �ft - �feet �0 4.29 6.67 l0.00 15.00 23.33 2.31 2.86 333 3.75 4.12 4.44 �W� SC,��L i 4f SD I 8' 8'(. 11 4.48 7.14 l l.l! 17.65 30.43 2.26 2.78 3.23 3.61 3.95 4.26 l2 4.69 7.69 12.50 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4.08 Final Dimesions. ote:The product of the multiplier and the height rosults in the horizontal distance to where the /�� n rm mata the original land sloQe ExamPle:Height at uQper edge of rock layer is 3.0 feet,rock - ayer is l0 fat wide,land slope�a 6%and berm slope reuo�s 4:L Upslope berm width is 3.23 x �P 5 �� ( � .0=9.7 ft;height at lower ed¢e of rock layer is 3.0+l0 x 0.6=3.6 ft and downslope bertn wid � a5.26x3.6=189ft. u.'ri S�.,��..