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G. DOWNSLOPE BERM WIDTH Sl°P" c°va r
<br /> 1. if landslope is 1%or more, x :q•!,�;,kX>P�F,1.1 �,
<br /> subtract rock layer width from adsorption width g".•t ,' 1, 3 rt.�; � � ,'.
<br /> to obtain minimum downslope berm toe c%.>ts.°a
<br /> 6"Topsoil
<br /> a�.g ft- lo_ft= �?�feet Natunil S
<br /> 2. Calculate Minimum mound Size DO Md0t
<br /> a. Determine depth of clean sand fill at Ute° a o
<br /> upslope edge of rock layer: izod`o Width AbsoTt
<br /> �ion Width
<br /> Separation 3' - I.3 ft= 1 . 2 feet
<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+'lft+ ift= 3.0 feet -
<br /> c. Enter table with landslope and upslope berm ,'r C4Upa°p<www'<.,
<br /> ratio. Select berm multiplier of 3.�7a:t,�':.:.'
<br /> r
<br /> d. Multiply berm multiplier by upslope mound ..Up y �'� °�° xWid
<br /> Wid
<br /> «k eoa ''r'a '`x' °pR�! waw -.
<br /> height to find upslope berm width: u ,.. �•4 l "�` '
<br /> :)::yt:�:);,;a'1x;'y"� r,b 1 'f } x"t7'i r v " !r P?i� a,i,. cfiW'�i'T;'1' i:F.:.i, ;
<br /> feet :':' -�5 :}:,;�'' r7 �.CMa •', .R:.rt..•
<br /> Ir"•'• :''t.'.:i:1'mY�•h 1�+�, "'l�,i ti/ �ra(''�,K,. ,'F.+r.� 4,111
<br /> e. Multiply rock lb _ ..,.•,r.x. 's .,z�r �'��: ,.. .: " •. .�:� .::;��...:.
<br /> layer width Y _ ;::;. �• :':,;.��;.." n 1 ,..a;;,:r.,:r*-.;: _,,�.. . .r:�..�':;
<br /> landslope to determine drop in elevation; °�y�""d♦��',�-�f�°
<br /> (.,,, .F�. .�....,X•''7r''..5-:�'n.,e:� Ab80 �IOrII
<br /> M i`'i 'x t7'il'- 'I.�t 1. Ki:..,1ru.Y/, IS.. ,`...,�.,,�..a•.n.,, ••'•�•..x.�.1.'}.y l.':':".;,,„t•' "V
<br /> 100 = feet
<br /> f X "'1" �_ 'i ,w<tiyi.•+,�•i'�rA•„�,t•,{' v(nn ..p YJx,j','. p,ki�1...••.i a� �' ,.1,.tip',',"
<br /> ,.r:� :.m:.r�i.li ta;jn:c,1 �.1�'�(}.$.}✓T•��'4,1 If.•`Fe'1+i1' �},,sry...-.";;r',.. f"G,`;:. x
<br /> f. Add depth of clean sand for slope h,baLm
<br /> L
<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 /> 3,q ft+ Z ft= 4.O feet
<br /> g. Enter table with landslope and downslope berm ratio. Select
<br /> berm multiplier of Ll•S y .
<br /> h. Multiply berm multiplier by downslope mound height to get
<br /> downslope berm width:
<br /> 9.,:� I x L4,o = Ile_feet BERM SLOPE MULl'1PI.II+.ItS•
<br /> i. Compare the values of step G.1 12
<br /> and Step G.2h L& s*� ao' Ls>oa DOWNSLOPE� rr berm
<br /> Select the greater of the two values as the +° bu= slope ra'°;
<br /> downslope berm width; a o feet
<br /> j. Total mound width is the sum of 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 3.0
<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 7.41
<br /> width plus rock layer width(D.2) 2 3.19 4.35 5.56 6.82 8.14 2.83 3.704.54 5.36 6.14 6.90
<br /> plus downslope berm width(G.2i); 3 3.30 4,s4 .88 7.32 8.86 2.75 9X 4.35 5.08 5.79 6.45
<br /> ),z _ft+L_ft+ ao ft = L 3 , feet 4 3.41 4.76 6.25 7.89 9.72 2.68 3.45 4.17 4.64 5.46 6.06
<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 5.71
<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 5.41
<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 5.13
<br /> _
<br /> )z ft+ 4 ) _ft+r_ft= feet 8 3.95 5.88 8.33 11.54 15.91 2.42 3.03 3.57 4.05 4.49 4.88
<br /> a 4. �� t 4- ;10 9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4,65
<br /> 10 4.29 6.67 10.00 15.00 23.33 2.31 2.86 3.33 3.75 4,12 4.44
<br /> Final Dimensions: ll 4.48 7.14 11.11 17.65 30.43 2.26 2.78 3.23 3.61 3.95 4.26
<br /> 12 4.69 7.69 1230 21.43 43.73 2.21 2.70 3.12 3.49 3.80 4,08
<br /> L4 X 141
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