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� G. � DOWNSLOPE BERM WIDTH S'°a��- c°""1� _
<br /> 1. If landslope is 1% or more, " .. ,,�;
<br /> .,rr.:.;.:r �.,:;i. �.:J.,�, ,
<br /> subtract rock layer width from adsorption width �����'°';���� .��;a* .���'':�'�,
<br /> .�,�. ;r°•' ,p-.� ,,n,,,��,
<br /> to obtain m um downslope berm toe .�. �{ .�r;,�� R,«x 1 ' � �` `� �, i
<br /> inim �� QanS+nd +;-, ,, , , � �� u� ,
<br /> ':.i i �:_.; �
<br /> a�,� ft-�_ft = � '_feet �b,� :,.:;;.:, 6:r��u
<br /> atural Soil
<br /> 2. Calculate Minimum mound Size
<br /> a. Determine depth of clean sand fill at U����d�'' °or'�'i`°p`�`�
<br /> upslope edge of rock layer: ��d� .,�a�,w,a�,
<br /> Separation 3' - I- J� ft = /-.i 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 fhe mound height at the upslope edge of rock layer;
<br /> ,�_ft +'1ft+ lft = 3 -S' feet _ s '_
<br /> c. Enter table with landslope and upslope berm . �.;�:;;:; :,�.:,��"upi�o�w��aw�:..' ..':� '.�;:�`�:: �
<br /> ratio. Select berm multiplier of 3.�t� '��.. : . ` �" ' �- � �. �
<br /> ''�U slo e Width�, PO4���Q4tQ. Rock Bed 74��4�4ia�.� ..Upslo Width :,
<br /> d. Multiply berm multiplier by upslope mound ;:�.�� ,. �-�-���q►�.� �d� 1Q_yi;�¢:�.���A �_�
<br /> hei ht to find u slo e berm width: � ' 'Q"���o-�', L`I` ,'_� ��.�r
<br /> y ', ..,,,• ..,.. � �y��_�� •.
<br /> P P � t::. '��'ih:n�•�•}.•: �.'�ld�•�C��:a�: .�}'(Jb��l�§� � °��ar.if��
<br /> g d . . :a� �RD`P'a� .� -s4•� .,
<br /> � � _ � � �"f I]�' J ,�I�dl(i J (�i��ry,,:.:.,.�:�i:h��'*�i'��(�,f,r-�i �i���+.f .t+)i r,.
<br /> ,y x 3. _�,�-fee _ .:��,�:�q:.,,:; ,:�,,.:��,;:�.:��;��,����,:�,�;,�;:�,�:�,.:,;;-:,�,::
<br /> �_ �._ t.�i:.:��i;i:t.�';•o.i:_;;.,:�.;' .::�:.: �•��� �..1''.d'�,.�,i� ��n;iv_.�,r��.��:��.')•r��;;� -
<br /> .::,,.:. ....•,. �•.i' ;......:..... . .
<br /> L ,,.. .. .�..;n. . . ...... . ., , ,
<br /> - i :. .,:•.,. , ,.. .,�:a'!����..•,��:pi.fi..('('(( :'1 � :t(::K':�;!; ( i, r;...,,i.�.,.,...y:.�,�,';
<br /> Multiply rock layer width by j ' ' �` . . , .., .
<br /> :�,�. .: :::�:.::':�:.:. . .,... ..�.:.
<br /> e. y � .. y •,r, ,....,,:
<br /> � �. f' Il.,n.�j�erri;.•�e:•.:�t U... :: -�. �,..., �.
<br /> landslo e to determine dro in elevation; �° ';'�:` ��i� wa�-L-� �'�'''`'`'�� .
<br /> P P �:;',� nt���o w,acn�� �'���:,,.,.�:..:
<br /> � � , . '^��• ;'i':.r;`i)`:n ;;�;, ,..,;.,;`.�,. ;,.,.,,,,_ ..,,.,,.�,�.,, :.,t,;i;.';"
<br /> � + - feet .,,� �:? >:; .�;,.��,. �.x�: :.,�..,; �.t::�;:.;,�::.F�:
<br /> l x � /0 100 - .<, .. };:,,,.w,��..,.,, :�}::� :.���;:�:.,'�'�
<br /> ;...:•. ..�.
<br /> . � . '•f'f y:j:f i:F:i.•�1:1��'i!'�..'�..�.:+.•i. �1'i,tqc�".:;`:'::'i'�t.«.:..
<br /> ^�1.:.^;:i' 1����•;:�p..! . .(n'1� il.fl)'il:t.
<br /> f. Add depth of clean sand for slope '� ��� ' �� " �
<br /> difference (2e)at downslope edge, to r���`�-
<br /> the mound height at the upslope edge
<br /> of rock layer (2b) to find the downslope height;
<br /> 3. S ft + .��,_ ft = 3,g feet
<br /> g. Enter table with landslope and downslope berm ratio. Select
<br /> berm multiplier of y�� �,
<br /> h. Multiply berm multiplier by downslope mound height to get
<br /> downslope berm width:
<br /> N�x�,� _ �� feet BERMSLOPEMUL'!'IPLIERS
<br /> i. Compare the values of step G.1�
<br /> and Step G.�'1�� Laad DOWNSLOPE UPSLOPE
<br /> Slo berm mulUplkrs for rarious bam mWtlplias for rariwu
<br /> Select the greater of the two values as the lo� ��a��,tl� c�,�����
<br /> downslope berm width; 1� feet
<br /> j. Total mound width is the sum of ' ' s• � • • a• s• � • �
<br /> upslope berm (G.2d) 0 3.o a.o s.o 6.0 �.o s.o a.o s.o e.o �.o a.o
<br /> l 3.09 4.17 5.26 6.38 ?.53 2.91 3.85 4.76 5.66 6.54 7.41
<br /> width plus rock layer width (D.2� 2 3,�9 4.35 5.56 6.82 8.14 2.8) 3.70 4,54 5.76 6,14 6.90
<br /> plus downslope berm width(G.21�� 3 3.30 4,54 5.88 7.32 8.86 2.73 3.57 4.33 5.08 5.79 6.45
<br /> �_ft + �o ft + J,�ft = •I ! feet a s.ai a.7 6.Zs 7.89 9.�x s.as �as a.i� a.sa s.a6 b.o�
<br /> k. Total mound length is the sum of upslope s s.s3 s.00 6.67 s.s� io.n �.6i 3.3) a.00 a.bz s.►9 s.�i
<br /> bernn 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.ZCl�; 7 3.80 S.S6 7.69 10.34 13.73 2.48 3.12 3.70 4.23 4.70 5.13
<br /> , I � Et + �,_ ft + ,�_ft = �'_ feet $ 3.95 5.88 8.33 I 1.54 l5.91 2.42 3.03 3.57 4,05 4.49 4,88
<br /> � •� .� �{ � -}- �� �� 9 4,t t 6.25 9.09 t 3.04 I8.92 2.36 2.94 3.a3 3.90 a.30 a.65
<br /> 10 4.29 6.67 10.00 IS.00 23�33 2.31 ?.86 3.33 3.75 a,t2 4.aq
<br /> Final Dimensions: 11 4.48 7.14 li.11 17.65 30.41 2.Z6 278 3.23 3.61 3.95 4.26
<br /> l2 4.69 7.69 1250 21.43 43.75 2.21 270 3.t 2 3.49 3.80 4.08
<br /> y x � a A� � -,,,,_
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