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3.��,r Cover l' � - d `�{�a.r_ �.
<br /> G: DOWNSLOPE BERM WIDTH S'°�=-=- �. f- },3p�
<br /> �--� x,- �,a � ,• a
<br /> 1. If landslope is 1% or more, �_� � �� "� ' � ' , .a:,:' ��M
<br /> subtract rock layer width from adsorption width , �,-�J � �P * y � �
<br /> ., � ..` , <xo�k 1' � C,;:" :m
<br /> ,kv r� .r'
<br /> �=f•.r � ' Clean Sand�
<br /> to obtain minimum downslope berm toe �+ � ��.
<br /> ��Yt -�ft = �feet �� � d...°•T""�,--..�;.�%�,-
<br /> atural Soil
<br /> 2. Calculate Mini.mum mound Size ------__.. _
<br /> a. Determine depth of clean sand fill at Up''��w;a�n °°W"''''F`w"�"`=-/y,�-�
<br /> upslope edge of rock layer: �wl��� .w��4�u��,wi��,
<br /> S�paration 3' -_ 2 ft =.�_feet /�,� ��-'�j
<br /> b. Add depth of clean sand for separation (2a) 1'���
<br /> at upslope edbe, 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 + lft = -� feet g��
<br /> ,..�-. .�..._,___.,..:�
<br /> c. Ent�r table with landslope and upslope berm - . ,. uP��e w�u,
<br /> rario. Szlect berm multiplier of 3. �� . �
<br /> Q o�--�,r-r:-x+r�nsz.a '�� �ti7t.
<br /> Upslo e Width-: `�Qo �"�uG,� Rcxk ����y�+aw.•,� .GpSiu r be�ur{i
<br /> d. Multiply berm multiplier by upslope mound I �_ �n ���o�y< w„�a,�`''io,,,,a4 ���,x�; _
<br /> height to find upslope berm width: 3 f� /�',�` uo�4°W ?���'�'Q�L�� _ �°:�f�N��°. /�5� '�-
<br /> s
<br /> .3 x 3.�: - ,� �Y feet = /� � �
<br /> e. Multiply rock layer width by � � ' ,{�,
<br /> - ,.�'
<br /> rminz d r o in e l e v a t i o n• H /��� oo„�,sio�w�3wl�r � �: 3 'i' , �
<br /> lr:�ndslope to dete p , nt��aon waa►n_.,�t_�...� .� .si��
<br /> �x � %- 100 =G,�, feet � t G �-��.: .,�;:1�_�� �
<br /> f. A d d dep t h or c lean san d for s lope J T��,i c.���a� ` -�`-- ---~�^^�--- - -'
<br /> difference (2e)at downslope edge, to �
<br /> the mound hei�ht at the upslope edge
<br /> of rock layer (2b) to find the downslope hzight;
<br /> 3.o ft + D•� ft = ��feet
<br /> g. Enter table with landslope and downslope berm ratio. Select
<br /> bzrm multiplier of S. �-� = �-�
<br /> h. Multiply berm multiplier by downslope mound height to get .
<br /> downslope berm width:
<br /> .�. G' X 4-.'3 = �feet HEKI�iSLOPEINULTiY1:'F.r:�;
<br /> i. Compare the values of step G.1� �
<br /> and Step G.2h� �a �owivsLorr: urat,ur�:
<br /> Slupc brrm a►ulu{�l►ecs Wr r.uiuu,i lau u.ua�./i,tN�ta ivt v.u�uw
<br /> Select the greater of the two values as tht'. in% bcav�aiu�{�enuus a�aw+►It�c>�<�ti
<br /> dowrulope berm tividth; /y feet -..�__...,.,.___-___.----._.____.
<br /> j. Total mound �vidth is the sum of �• '�� �5• n l �� , y _,�;:;��.. _�;_�.___�,;.,�
<br /> 0 3.0 4.0 5.0 6.0 7.0 3.0 � S.Q c u %�> >i�
<br /> upslope berm (G.2d)
<br /> l 3.09 4.17 5.26 6.38 7.53 2.�1 3 u� �1,70 �tw c.':. �.i!
<br /> �vidth plus rock layer width (D.2) ,�, 3.19 a.3s s.sb 6.sz s.ia z.�:s a-.. i.s� >.ao o�+ r�r,
<br /> plus downslope berm width(G.2i); 3 3.�o a.sa s.sa �.sz a.� �.�s 3�:: :.�s s ua s.��� o..;�
<br /> C
<br /> ��_� t�ft t � � _ -3�_ feet 4 3.41 4.76 6.25 7.h9 9.72 2.6d :a� �i.i'J :K.1 5�+o G.�:.,
<br /> k. Total mound length is the sum of upslope 5 3.53 s.00 6.a� ss� io.r� z.oi j +� a.c� a�,: a,=a a��
<br /> berm width (G?d) plus rock layer length (D.3) � 3.� s.i� �.��s 93ti ,z.o� 2.�►��s '�3as �a, �v� s.��
<br /> plus upslope berm width (G.2d); � 7 3.so s.sb 7.69 io.� 13.73 �.aa � :. �u �+: a�,u :;
<br /> U,� 1 �.'f ft -}- � 5 ft �' 1�� - � feet g 3.95 5.88 8.33 lI.S4 15.91 2.4: j . : 5! �+��7 �av �n
<br /> 5- 9 4.11 b.25 9.(� 13.(u IS.92 :.30 � S y5 :i jh� .r s;, -,:;�.
<br />{��ii�J�'�� `�" f- �i•- -� �� C ��� 10 -3.29 6.67 lO.W t�i)0 2333 ?.3l � i s3 �75 � i' -�-.�
<br /> 1
<br /> �.~in�l �3imnensions. ll 4.48 7.14 ll.11 1765 30.43 2.:p .'. - S.'13 �.b� 3.vi -: ;�,
<br /> t2 �1.69 7.69 12.50 2t.43 a3.75 '_.:l . . "f t2 '�3.,'► f,ti ,
<br /> �J X _7 ._._:r....�.....�..,.,.,...,..,,,��_..._..,.,..``
<br /> _._ _____ __. __�_ _---......
<br /> ��. ,-� ��� . �
<br /> �'�" - �,1-
<br />
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