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- G. I DI�W��ISLOPE BER�v1 V�TID3'H s���:- co�«r
<br /> 1. If landslope is 1% or more, , , � ::� �::,
<br /> _ subtract rock layer width from adsorption width ` ' �q'' 4aR '; `
<br /> � � ,:�� �Rock l ���o.°' r . r..
<br /> to obtain minirnum downslope berm toe , c�P.�,sar,d�� ;.<:.,;,� ,';',, ' `` � , , .. . 6"Topwil
<br /> a,�, ft - � ft = �_ feet a�xu �`�o .
<br /> 2. Calculate Minimum mound Size
<br /> a. Determine depth of clean sand fill at u�i�wa�n ����d�
<br /> upslope edge of rock layer: ��d� Absorption Width
<br /> Separation 3' - � r � f� = r,:f 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 + lft = 3.�' feet - l.'1 � -
<br /> ,:..., ...: ......: ..... . . ...: .... . ..: ..
<br /> c. Enter table with landslope and upslope berm :�.::uPsio�rv�acn : .' .' ;.
<br /> ratio. Select berm multiplier of � .S� �.� � ' J'� � �
<br /> ;�Ups�lo e�dth' S'�o�r4�p� �Bed�o �?i�ara.�� Upslope�dth
<br /> d. Multiply berm multiplier by upslope mound � �_ ,Q,�Q�?�,kb�;, y.4 P�;�¢z¢; �_
<br /> yi :� ��a '9 �►�� L.GII `� � •���r��A�o
<br /> height to find upslope berm width: � e 4 � o0'PO�a4wU : e -��y ' `
<br /> � �7 X ?,� = 1�. feet L �` � t �� .ri(J 1 ���[7' )' �eh Y�:�� r �-�{ d:
<br /> v�J ;9 � `M1 .�� < R,� ' �.
<br /> 3 , ,�t, , „�,�� ,
<br /> e. Multiply rock layer width by „ , :�� ;.� , , : �
<br /> F m.�,s�o�'wer� I�. �
<br /> landslope to determine drop in elevation; � ' � ' � � .
<br /> :. . ,,.::....::� .
<br /> ... ..:....... .. :. ..
<br /> ...•.. .. .,,..:. AbsorpuonWidth�'�_ .-::•.
<br /> �� x � % l 100 = .�_ feet ,.:. ; , , , . �,
<br /> ,:�;.. � .� �. ,
<br /> _ ,:. ,... . ...:.. .:: ..... .�i ;.,��t�., y ,�, ,,,� ..,, : ..
<br /> f. Add depth of clean sand for slope To���,�,,�_ � �� �
<br /> � ' -
<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; f'`'� ����'"�' : �°` '` �a.' �L�L '�'GO.
<br /> ��'DTJ a 1 � 'fp L��•��b1�`4" U�" 5��,'��-�lr'l Fl9"�
<br /> �,.5 � + _�ft = 3,� feet s,�-�::.- ,�,�.-�,,�,-�.
<br /> g. Enter table with landslope and downslope berm ratio. Select
<br /> berm multiplier of ,�-1. y
<br /> h. Multiply berm multiplier by downslope mound height to get
<br /> downslope berm width:
<br /> �S�„ x 3. � _� feet BERI�SLOPEMUL'I'SLIERS
<br /> i. Compare the values of step G.1__1..�_
<br /> and Step G.�'l �1 Is�d DO�i'NSLOPE UPSLOPE
<br /> Slo berm multipikrs tor rarioisc berm mdtlplie:s for razious
<br /> Select the greater of the two values as the ►a� ��o���� c«m:b��n�
<br /> downslope berm width; Us� ►� feet 5, 4• 5•
<br /> j. Total motznd width is the sum of o 3.o a.o s.o 6.0 �.o s.o a.o s.o 6.0 �.o s.o
<br /> upslope berm (G.ZC�� � 3,pg 4.17 5.26 6.38 7.53 2.9! 3.85 4.76 5.66 6.54 7.41
<br /> width plus rock layer width (D.2� 2 3,t9 4.35 5.56 6.82 8.14 2.83 3.70 4.54 5.36 6.14 6.90
<br /> plus downslope berm width(G.21�� 3 3,3p �d_54 , 5.88 7.32 8.86 2.75 (3_37:� 4.35 S.OS SJ9 6.45
<br /> __L,�__ft + �_ft + ��S ft = _1_L_ feet 4 3,41 4.76 6.25 7.89 9.72 2.68 3.45 4,17 4.84 5.46 6.06
<br /> k. Total mound length is the sum of upslope 5 3.53 s.00 6.67 s.s� io.r� z.6� 3.33 a.00 a.6z s.�9 s.��
<br /> berm width (G.2d) plus rock layez 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.2.C��� 7 3•80 5.56 7.69 10.34 13.73 2.48 3.12 3.70 4,23 4.70 S.I3
<br /> �_ ft + �._ft + �13 ft - G 2_ feet 8 3.95 5.88 6.33 11.54 t5.91 2.42 7.03 3.57 4.03 4.49 4.88
<br /> � � � �� � �_ � � ,_, �� 9 4,t t 6.25 9.09 13.44 18.92 2.36 2.94 3.45 3.90 4.30 4.65
<br /> l0 4.29 6.67 10.00 I 5.00 23.33 2.31 ?.86 3.33 3.75 4,(2 4,44
<br /> Final Dimensions. 1! 4.48 7.14 (l.11 17.63 30.43 2.26 2.78 3.23 3.6! 3.95 4.26
<br /> l2 4.69 7.69 12.50 21.43 43.?5 2.21 270 3.12 �.49 3.80 4.08
<br /> �� � X �a x���.
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