, ' �
<br /> G. DOWNSLOPE BERM WIDTH 51op"- �°""'�
<br /> 1. If landslope is 1% or more, ,,;,�;.�.: �;•:,x�:r::��:� �
<br /> .:;.. r ,r�s� le,�F. :?, ''�k,'.�•�,.
<br /> subtract rock layer width from adsorption width ,.;.,��.;�;.;;;:'�, R�,• �,a. . ,��.,��;;,,;�,>,
<br /> downslope berm toe aw;s.na ;�,.;.:�� ;r�tr� �� u�� -���
<br /> to obtain minimum s• , ,�,,,, 6,r�u
<br /> �_ft - �ft = _L2_feet •�s�u ��_
<br /> 2. Calculate Minimum mound Size ��md�,
<br /> a. Determine depth of clean sand fill at U�'�N/dth
<br /> upslope edge of rock layer: �o d� ��orpnonmar�
<br /> u-�
<br /> Separation 3' - �•� ft= �-� 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 /> 1•s� ft +'1ft + 1ft = �.J feet - z` -
<br /> c. Enter table with landslope and upslope berm ��;. : �;. �' � �-ups�o�i�nacn �
<br /> , :...��
<br /> ratio. Select berm multiplier of 3•z-� • �� ���� ,`�Q o*�p,¢; �� ��,Qa;?���, .�upsiopc w'ia�, •
<br /> "'U fl VV1dtl1: �►'d,�.,• 0 l, 1A►1'�¢ l�
<br /> d. Multiply berm multiplier by upslope mound , ;; p r°�` � 4,4 QQc.� wjecn .L�.�.� Q�
<br /> height to find upslope berm width: �3 ` � ` " ,�/�" �b.�' , i,�' °,_ � `'���. ,
<br /> � Y r•i li r. V a ���4 � w� � �
<br /> .♦ �
<br /> 'C i'�1 ' S J• j��f}�i���4�i(hit'�yi:Ji�t���i�{1a1i �i f�('�,Ji��� S �
<br /> y ' - ' I feet � �.. � � ,� ,� 3 i`�, .� 7�(l�r'1���,n�� i t t c
<br /> ` •Z /���.� ��.f..�- 1' r',�.i i(1'�'-h�f� y!� �ti� x a�,'7�K�'.+(+�i��f.�t'��:�Y i 4'1'i f�� ., .
<br /> e. Multiply rock layer wi d t h by � `! ,�� ' c�R� r,' r���0. >,,`i}�: r�-.: ... � `
<br /> landslope to determine drop in elevation• �° � r - r `�' °°`'"�"�°�"�dr�. z� � �S ,
<br /> � ` Absorptlon Widch 17 ..
<br /> ' s7' , � a �F'K'1.-ai .4r;•. � �t �..ti! � �
<br /> „ tl.! r+l\ !;h'N}... �q�,,.�1
<br /> �o x � %+ 1 0 0 = �.�e_f e e t , �
<br /> �� '���• � f...�..':.•. 1 :7.�it����''ti�'�,��t.,�7xJ�Thi�MFpy.:� : � ��� "•�':.i..
<br /> f. Add depth of clean sand for slope To��,�
<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.S ft +�_ft = . � f eet
<br /> g. Enter table with landslope and downslope berm ratio. Select
<br /> berm multiplier of �-?L •
<br /> h. Multiply berm multiplier by downslope mound height to get
<br /> downslope berm width:
<br /> ,� 2�x 4.� -�_feet s�st.orE Hstrc.�s.�s
<br /> i. Compare the values of step G.1�_
<br /> and Step G.2h�_ �d ���PE UPSLOPE
<br /> Slo berm muldpllers tor various Da�m mdtlpNas tor rariau
<br /> Select the greater of the two values as the ►� ������ °��'°��'"°�
<br /> downslope berm width; aa feet
<br /> j. Total mound width is the sum of o 3.o a.o s.o s.o �.o a.o 4.o s.o e.o �.o s.c
<br /> upslope berm (G.ZCi� � �,09 4.17 5.26 6.38 7.53 2.91 3.E3 4.76 5.66 6.54 7.4
<br /> width plus rock layer width (D.2) 2 3.t9 4.3s s.ss 6.es a.i4 x.e> >.�0 4.s� s.36 6.i4 e.9
<br /> plus downslope berm width(G.2i); 3 s.so 4.sa s.as �.ss s.as x.�s �.s� 4.ss s.oa s.�9 s.a
<br /> 1 � ft+ �ft + �,__.ft = �I 3 feet a s.ai ,.�6 s.0 �.s9 s.�� z.�a s.4s ,.�� 4.s. s.� a.o
<br /> k. Total mound length is the sum of upslope S 3.53 s.00 a.a� s.sr io.r� �.6i 3.33 4.00 4.6z s.i9 s.�
<br /> berm width (G.2d) plus rock layer length (D.3) 6 �.66 s.z zi4 9.�s i�.m z.s4 3.0 3.as a.ai 4,93 s.a
<br /> plus upslope berm width (G.2d); 7 s.so s.s6 �.69 io.� i3.�s �.4a a.iz 3.�o a.0 4.�o s.�
<br /> �ft + �o _ft+ �ft= .2�.feet 8 3.9s s.as e.s> >i.sa is.9i uz �.o� 3.s� 4.os a.�9 a.e
<br /> a a SD aa c1�f 9 4.11 6.25 9.09 I3.W IE.92 2.36 2.41 3.45 3.90 4.30 a.6
<br /> ..�
<br /> 10 4.29 6.67 10.00 13.00 21.33 2.31 2E6 3.33 3.75 4,12 4.4
<br /> Final Dimensions: �l 4.4E 7.14 11.11 17.65 30.43 2.26 2.7E 3.23 1.61 3.95 4.Z
<br /> l2 4.69 �.69 12.50 21A� 43.73 22t 2�0 3.12 3.49 3.80 4.0
<br /> i
<br /> �3� X ���. ���. '
<br /> s'Q� �Z u-o��F-'�� \3-a-Lz+�'�_ `6 fS
<br /> i� +�z-rzy ,l�o
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