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<br /> �. D�OWNSLOPE BERM WIDTH S'°�'- c�""1•
<br /> 1. If landslope is 1% or more, .: ._,,.:�::•��,�.x.::x::�:�:: � •,-
<br /> subtract rock layer width from adsorption width � ..���-'�'' �" ., `'
<br /> :.��
<br /> ';'! }<�.�a�`.,?' Roekl �'�a" �i�r:K��;:p,,.
<br /> to obtain minimum downslope berm toe o�g.�e '<,::�,;�". ;..,`,.'''�`'��`�'''`�':��� '
<br /> ,,; .,,.,�,..;,,�;.:,�,
<br /> .o-i.::�: 6"7'opsoil
<br /> ac�•� ft-�ft=�L._feet .�s�u� '
<br /> 2. Calculate Minimum mound Size U� w►aa,
<br /> a. Determine depth of clean sand fill at � �d�
<br /> upslope edge of rock layer: � ����""a�'
<br /> Separation 3' - 1.'� ft = 1,'� 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 /> �,3 ft+'lft+ lft =. _,.."ifeet - � �-
<br /> c. Enter table with landslope and upslope berm � .uPs�a W'�a�, .
<br /> ratio. Select berm multiplier of_� •�� • �� :� � '' � � � �
<br /> Upslope Widthn �,���,�„� �����?oa41#::•x �Upslope�dth ..
<br /> d. Multiply berm multiplier by upslope mound � .;, ,� , ;�, �.��q , ,.���� _�
<br /> y� ''; 4 �,.:�"''�t I.est 'i,�i•'�+�..++$. r
<br /> height to find upslope berm width: t .� r - ..� '�
<br /> '{ i ��SY '1�4�.1f iti'' � hr,r.v`4�'L � (!r �iY
<br /> z.a� feet � r �, l3j,f�� M a�,�r �,��. [
<br /> .� J x 3,3 �� 'r 'f r 7�,�+f. .,{7 i i k:� �r;� i i4� . .
<br /> e. Multiply rock layer width by � ' ' :.:�� �
<br /> A ; r.,; ,`;, t
<br /> landslo e to determine dro in elevation; � , i` °oi"�°��a`i`��-'
<br /> P P Absorption Width '�
<br /> �x__�-%+ 100= _!�feet -: � {,,� s,�, .. : .
<br /> . r
<br /> :. ,.�a,: ;r,;c �>i:hr .,
<br /> . ..:... .
<br /> .. .•.. , ..•• ,. ..
<br /> f. Add depth of dean sand for slope � � �� To�t,�,�y � . �
<br /> difference (2e)at downslope edge,to
<br /> the mound height at the upslope edge ,��, f���' �. '
<br /> of rock layer (2b) to find the downslope height; '-� ��� ,'�; � ., iA i
<br /> �;-�
<br /> 3.3 ft +�_ft = 3•� feet ��`` ' :;� ��
<br /> �--,�; '" _� � �
<br /> . Enter table with landslo e and downslope berm ��Se ' �`�
<br /> g P
<br /> berm multiplier of S•��- •
<br /> h. Multiply berm multiplier by downslope mound height to get
<br /> downslope berm width:
<br /> �,a�, x 3,� - al.._feet BERM SLOPE MULT�L�RS
<br /> i. Compare the values of step G.1�_
<br /> and Step G.2h�_ I'ad e«m�p�li�s�r�ruions b�'���1��%�+�
<br /> Select the greater of the two values as the �� ������ °"m�'°�"�°�
<br /> downslope berm width; a � feet
<br /> j. Total mound width is the sum of o s.o a.o s.o b.o �.o s.o a.o s.o 6.0 �.o s.o
<br /> upslope berm (G.ZC�� 1 3.09 4.1'7 3.26 6.38 7.53 2.91 3.85 4.76 5.66 6.Sa 7.4t
<br /> width plus rock layer width(D.2) 2 3.19 a.ss s.sb 6.ax s.ia z.ss s.�o a.sa 5.36 b.�a e.�o
<br /> plus downslope berm width(G.2i); 3 3.�o a.sa s.ss �.sz s.s� i.�s s.s� a.3s s.os s.�9 e.as
<br /> �_{�+ t o ft+ �I ft= �3_feet a s.ai a.�6 b.�s �.s9 9.�2 z.aa a.as a.i� a.0 s.a6 b.o�
<br /> k. Total mound length is the stun of upslope s s.ss s.00 a.6� s.s� �o.r� z.6� s.ss a.00 a.6z s.►9 sa�
<br /> berm width (G.2d) plus rock layer length(D.3) 6 3•� �,� �.la 9.38 iz.m s.se 3.z� s.ss a.a� 4.93 s.ai -
<br /> plus upslope berm width (G.ZC��; 7 3.80 5.56 7.69 I0.34 13.93 2.48 3.12 3.70 4.23 4.70 5.13
<br /> � I ft +�ft+ �._,ft= 5�' _feet S 3.95 s.sa 8.33 ��.sa is.9i x.ax 3.03 s.s� a.os a.a9 a.ss
<br /> a 1 V� + a� /n y 9 4.l I 6.25 9.09 13.04 18.92 2.36 2.9a 3.45 3.90 a.30 4.65
<br /> l0 4.29 6.67 10.00 13.00 23.33 2.31 ?.86 3.33 3.75 4.t 2 4.44
<br /> Final Dimensions: I1 4.48 7.14 Il.11 17.65 30.43 226 2.78 3.23 3.61 3.95 4.26
<br /> 12 4.69 7.69 I2S0 21.43 43.75 2.21 270 3.12 3.49 3.80 4.08
<br /> 4a� X 9 y r.�-��
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