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G.
<br /> DOWNSLOPE BERM WIDTH slop" COYer 1
<br /> 1. If landslope is 1% or more,
<br /> . •Jac.: �y'x z
<br /> •
<br /> subtract rock layer width from adsorption width s0?,r.x ,► R«lt ' i'
<br /> to obtain minimum downslope berm toe ,,:•:1 ,r ;•Clean s.nd?•) ;<";,s;4A: y ;a,;;s 1 :'*:w'
<br /> . F. ,1."....1,.;'..*\6-Topsoil t yz.
<br /> t,,I ft- In ft= ' _feet Natural Soil
<br /> „,....gt.,,..,2. Calculate Minimum mound Size Up� � �
<br /> a. Determine depth of clean sand fill at
<br /> upslope edge of rock layer. "~� Absorpt1o, Width
<br /> /.0 ft= -z-o feet
<br /> Separation 3' -_
<br /> b. Add depth of clean sand for separation(2a)
<br /> at upslope edge, depth of rock layer(1 foot) to depth of cover
<br /> (1 foot) to find the mound height at the upslope edge of rock layer;
<br /> ft +'1ft+ 1ft = 4.0 feet -1A4 -
<br /> c. Enter table with landslope and upslope berm :;:upslope wlati;
<br /> multiplier of 3.03 :. .'r ...:. .�„',. . . ;.;':n,� .ia ....,
<br /> ratio. Select berm y.� •..•.:•-• ':'`: _s
<br /> .;upslope widtioi i•' >4.., Rook&d ? .e v`}' •Upsl Width
<br /> d. Multiply berm multiplier by upslope mound ;7. �,_ width F: : i r.
<br /> ,, ,.. Lea.• �-� °` ` .
<br /> height to find upslope berm width: so �• 'r '. .$ .: , J,:
<br /> •6• .01,1661,17/:,..1:16..'' , ••f• t ' .�`.t :'
<br /> ti
<br /> Li ,c� x 3,c�3 = I a feet :. '..." •'Z-a y ,• ; , .. e ,� >�: !.'3,�..;
<br /> i:"!::::.:..;.! �'. d�•'.a(l w�4,i'(s • �al:rrw. �ea�j?;�� '� u{ 4 ,�j,1,'_! ,,'t••:
<br /> e. Multiply rock layer width by •. ..; "' ]. .l ] ,,,......,7„.: .
<br /> Y t...,,'.",:: JP�:�1�.�{�•y.:,'1,• f��+:''4r}+fi!''�1fo 't�i:1Ya.. •r.f;l'�:J::':'s•,..
<br /> landslope to determine drop in elevation; 1= '.f.-::. ...::•,.!i:.:':',.-7...,:y.:::‘,..!.., : AbsorpDowns1tion Widde .` `''; :..:::::
<br /> ,1'. : a ., 4' u�/ 4"".:/'y M�' f•. ... 1 M I(>
<br /> %+ 100= , feet ,!", rlJ;'k r.".i.r`.iii ; t�fr�.•�'C" 'M,4.4,'.:•j"` 5iq
<br /> __X ,r ,'- +' ;n;;+,,..;`,..7' t.I,Nr''e•'ylp.lr:'t.}r'h.;s'�i9!'a '.:.:::,.'•.,•.( , •.a:,'i ` .. ..
<br /> f. Add depth of dean sand for slope Total Length -),)I;' -
<br /> difference (2e)at downslope edge,to
<br /> the mound height at the upslope edge
<br /> of rock layer (2b) to find the downslope height;
<br /> y. .) ft + . ft= 4. `6 feet
<br /> g. Enter table with landslope and downslope berm ratio.Select
<br /> berm multiplier of S`d .
<br /> h. Multiply berm multiplier by downslope mound height to get
<br /> downslope berm width:
<br /> ,c.c.zc5 x 4,(ie = feet BERM SLOPE MUL'rIP ERS
<br /> i. Compare the values of step G.1_2_2___
<br /> and Step G.2h g Laud DOWNSLOPE UPSLOPE
<br /> SI berm mnklplle s for various berm multiplies for various
<br /> Select the greater of the two values as the berm slope ratios berm slope ratios
<br /> downslope berm width; •Z feet
<br /> 3:1 4:1 5:1 6:1 7:1 3:1 4.1 5:1 6•1 11 8
<br /> j. Total mound width is the sum of
<br /> 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8
<br /> upslope berm(G.2d) 1 3.09 4.17 5.26 6.38 7.53 2.91 3.85 4.76 5.66 6.54 7.
<br /> width plus rock layer width(D.2) 2 3.19 4.35 5.56 6.82 8.14 2.83 3.70 4.54 5.36 6.14 6.
<br /> plus downslope berm width(G.2i); 3 3.30 4.54 5.88 7.32 8.86 2.75 3.57 4.35 5.08 5.79 6.
<br /> -
<br /> /?•\ ft+ 10 ft+ a` ' ft= 50 feet 4 3.41 4.76 6.25 7.89 9.n 2.68 3.4s 4.17 4.84 5.46 6.
<br /> k. Total mound length is the sum of upslope 5 3.53 5.00 6.67 8.57 10.77 2.61 3.33 4.00 4.62 5.19 5
<br /> berm width (G.2d) plus rock layer length(D.3) 6. 3.66 5.26 7.14 9.38 12.07 2.54 3.23 3.85 4.41 4.93 5
<br /> plus upslope berm width (G.2d); 7 3.80 5.56 7.69 10.34 13.73 2.48 3.12 3.70 4.23 4.70 5
<br /> ) ft+ /0 0 ft+ 1 ft= 1 ak--) feet 8 3.95< 3.8E) 8.33 11.54 15.91 2.42 c..03 3.57 4.05 4.49 4
<br /> Ds..Y / O 4- , I S 6 9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4
<br /> 10 4.29 6.67 10.00 15.00 23.33 2.31 2.86 3.33 3.75 4.12 4
<br /> Final Dimensions: 11 4.48 7.14 11.11 17.63 30.43 2.26 2.78 3.23 3.61 3.95 4
<br /> 12 4.69 7.69 12.50 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4
<br /> /'_..10 _K S�
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