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�;. I �(�1���N'>[.()1'I: }3E1ZM WI I)"1�} { �.�,,,,,� < <„-��, , •
<br /> v
<br /> 1 If landslo�>t �s 1'% or more, � �
<br /> sub�r,�ct rc��k layer �n�idth fro«� a��s�>r-E�ti��n ���i��th � �oA o00 ,o �1
<br /> t�> obtau� minimum downslope berm tut� ` R"`'` � '°�� �
<br /> � Clean Sand
<br /> �`i ft - __l L� � _ �_ feef Natural Scn1 6"ToPso�l
<br /> 2. Calculate Minimum mound Sizt� --- ------ i
<br /> - __�.m o�---
<br /> _---
<br /> a_ Determine depth of clean sand fill <�t I ��rr:��,F.�w,�,�r, i����,sio�w,drr, �
<br /> u �1� �E� ed e c�f rock la er: �
<br /> � _ ____-__ --- ---- �
<br /> P� F K Y -- ------
<br /> - - --»
<br /> �.u�k W�dth Absorphon W�dth �
<br /> Sc�paration 3' - C- Z Et = L__�_ feet `
<br /> b. Add depth of clean sand f�r separ��t�c�n (Za)
<br /> at upslope edge, depth of rock layer 11 f��t) to depth �f cover
<br /> (1 foot} to find the mound height at the upslope edge of rock lave ;
<br /> .�,� ft + 1 ft + 1 ft = 3�8_ feet �
<br /> — _____
<br /> c. Enter table with landslope and u slope berm uPsioPe w,dcn i
<br /> ratio. Select berm multiplier of � 7 �
<br /> d. Multi 1 berm multi lier b ll S10 e mound Upslope Width bQo opODQa,�Rock Bed �o,00ab�a Upslope Width
<br /> P Y P Y P P � a< w,a�, e �� ���
<br /> aD ev;aa4 a> �o p��oab s
<br /> height to find upslope berm width: aPo o��do'P p�68U�sU 4 Qo�onb y
<br /> 3•5 7x 3,� - 1�. � feet �
<br /> e. Multiply rock layer width by 3
<br /> �
<br /> landslope to determine drop in elevation; �° ��io�wacn
<br /> ��x � %= 100 = �� feet .ab��tio�w'a�n
<br /> f. Add depth of clean sand for slope
<br /> Tota1 Length
<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 /> �� ft + D�3 ft = �_feet
<br /> g. Enter table with landslope and dotvnslape berm ratio. Select
<br /> berm multiplier of �I , S y
<br /> h. Multiply berm multiplier by downslope mound height to get
<br /> downslope berm width:
<br /> �.� x y./ _�� feet BF.RM SLOPE MULTIPLIERS
<br /> i. Compare the values of step G.1�_
<br /> and Step G.2h /�- 6 �a nowxsL PE UPSLOPE
<br /> SI° berm m�ltipliers r variais berm mdtiptiers for rarious
<br /> Select the greater of the two values as the �o% �,�� °d� ���,�ti�
<br /> downslope berm width; �� feet --
<br /> � Total mound width is the sum of -' ' '--� ` � � � � t � � � � 5 1 e : ; � 8 �
<br /> )-
<br /> �� 3-0 a_U �_C� o C7 ?0 3.0 a 0 S 0 6 0 7_0 2s o
<br /> upslope berm (G.2d)
<br /> � 3.(N 3 17 5-36 6.38 7.53 2_91 3-85 4 76 5� 6_S4 7 4l
<br /> width plus rock layer width (D.2) ,
<br /> 3 I9 q 3S SS6 682 8.14 2$� 3J0 4.54 S36 6J4 (��
<br /> plus downslope berm width(G.2i j; , 3�o a sa s_ss �_3z a.sb ��s 157 a 3s s os s�9 b.as
<br /> � ft + � ft + � ft = �� feet � j,i a�c; bzs �sy 9.7� z6s 3a5 ai, ��nn sab bob
<br /> k Total mound length is the sum of upslc��e s �s; s�,c� e�, g s, ,�„ z�, 3,z ,a, ,6, � ,� s,�
<br /> berm width (G2d) plus rock lavt�r l��n�;th !I�_.�l �, ?�, t ,r. - �.� �a,h �zo� �sa ,,�s �R� ,,; ��; t:;
<br /> plus Upslope bern� ��ic�th (C� � i}, ' ,
<br /> � � ' i z Ku < �P 7 t,y i0 1: 11 73 �4h 4 I2 i_7i� 4 3: 9 70 S ,_
<br /> �__ ft + �j�_ ft + �� _ tt -- �Q feet " �v� ssx a >� ,� ta i5vi :�a: �o� 3�,
<br /> a05 :av ah;;
<br /> 'a 7 I 1 b:S V(� 13(W I8 9? :)6 �94 ?a 5 l 9(1 -7;t1 a bt
<br /> - -- ----------- ._.__...__- -
<br /> I11 -7 -`4 h O; IU(hl I S lKl '1_l�i ?_11 ?.Rh . -. i ' l I. :.1-:
<br /> Final Dimensions: �: ,.�r , ,a � �� ,����. ���a, ,�,, ��x a;� ,�; ,vs : :��
<br /> Z j rz a�,v 7 a� i�50 21 a3 4�75 ..:I �70 3_I� j 49 3 8o a Ori
<br /> —�_---- X � --
<br />
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