|
G. DOWNSLOPE BERM WIDTH , �'' ��
<br /> 1. If landslope is iqo or more, � ......x::.^>..,�,.,.,
<br /> �:..
<br /> subtract rock layer width from adsorption width � ����:� ;fr�; ....
<br /> .�u z-�. �1� .;:���:..���:..
<br /> to obtain minimum downslope berm toe : a:�s.ae ;,,; ,,;,.,. ;::{.:`�;;..k�,:;�,��;:�
<br /> .;,., �.�.;,.�:,_;:�,.,: 6-T�«►
<br /> �ft-�ft= io�.feet s�_
<br /> 2. Calculate Minimum mound Size �
<br /> a. Determine depth of clean sand fill at �""�' °o""�°p`'"�'''
<br /> upslope edge of rock layer: � ��► ���,��,
<br /> Separation 3' - l�' ft= �•s' feet
<br /> b. Add depth of clean sand for separation(2a) ,
<br /> at upslope edge,depth of rocic layer(1 foot)to depth of cover
<br /> (1 foot) to find the mound height at the upslope edge of rock layer;
<br /> I,S� ft+'lft+ lft= 3,s� feet �a
<br /> c. Enter table with landslope and upslope berm ;�;:�.:�:5 u�w�a�;
<br /> ratio.Select berm multiplier of 3. ia � + '::; .�; ,;-1�-
<br /> ,... .�.
<br /> d. Multiply berm multiplia by upslope mound " 7 ""�'' � o " �:`�`"�`�
<br /> � �5;.. ''^ 'q �f:..: �!�
<br /> height to find upslope berai width: ' `�.,�::,?.,�h�, •�;_=�. ;���,�'{.���� �.��
<br /> 3.�� I I �T 4 7 4".� tit��r'�.d.9Ny�'M��h N. w� �r••�e. ! t �. �} .s.
<br /> X 3��a ����� � �� t +;i^���r'�1 i � i. 7J'i�1.s7 �„a 3 ( C,.,Fj��` {t � ��
<br /> M .*�eb r f R�,}Y�"y.,far'�4.�v�'� � �l l� �� ....+.. .0
<br /> , : �' . � • iR.a�j�n a:1Y� ��* r'�t y�'+��7�+rt S'',� � ,r
<br /> e. Multiply rock layer wndth by �.F .-:.:�.:µ�:r ,^ ';���,5��n�x �_�
<br /> r+, r y, u 2�' P(1�S�'k��. f�,f:':".:r.,.^Z.I t"f+'"'....� ..~ t
<br /> landslope to determine drop in elevation; � �:;�; ,r{�� r �__ ��wa � � -
<br /> �v x � %+100=��feet :�:...:�y� ,.s �:��.�.a;��..�.,:,��.-�::..;;:,,,a,.,.. .�
<br /> :.� �r .,�x kn.: , i,�.rdt0`x���". ' rvi'.�i`x�.
<br /> � � �' ��..�`•`.f`...:.:v:��'�tiS;i�i msa�,�q��.�$ r7!i 7';4 ......' : .._.: �.
<br /> f. Add depth of clean sand for slope � �
<br /> difference(2e)at downslope edge,bo ���
<br /> '��the mound height at the up8lope edge
<br /> of rock layer(2b)to find the downslope heigh�
<br /> 3.� ft+ .� ft=��eet
<br /> g. Enter table with landslope and downslope berm ratio.Select
<br /> berm multiplier of S,a� �
<br /> h. Multiply berm multiplier by downslope mound height to get
<br /> downslope berm width:
<br /> y./ x .s''a� _�feet a�tst.�s�.r�.�rs
<br /> i. Compare the values of step G.1 � 0 .
<br /> and Step G.2h
<br /> l � e.�+.��w� e....��.�
<br /> Select the greater of th�e two values as the -- r._ e..,ir�.a�u.. e.��.�«
<br /> .a,,. s i.>,
<br /> downslope beran width; a � `-��t� Y:�
<br /> j. Total mound width�s the sum of .� • . . . . . . . . . .
<br /> , � �,0.,.. .3A 4A 3A 6.0 7.0 3A 4.0 S.0 6.0 7.0 8.0
<br /> LlPSlOPe beI�1�Ci.�� . .',t x 3.09 4.17`: 3.26 ' 6.35 7.33 t9t . 3.E3 4.'76 3.66 6.54 7.41
<br /> width plus rock layer�nndth(D.2) =z �.,9 4.s s s.s 6 s.a z: s,u t a� s.�o 4 s a s.� a.i a �.9 0
<br /> P1US C10WI1S10�beTal W1C��L�Ca.21�, ' ` 3 3.30 4.54. S.Ei 7.32 8.86 2.75 3.57 4.35 S.OB 5.79 6.43
<br /> �_ft+�_ft+ �� ft= ya,_� :,4 3.41 4.76 6.ZS 9.i9 9J2 2.63 3.43 4.17 4.84 5.46 6.06
<br /> r x �;��
<br /> k. Total mound length is the sum c�# �, ` � s � 's.ao � a.s� ian �.a� s.� a.00 <.62 s.�9 s.��
<br /> berm width(G.2d)plus ro�k layer''��,;`��:3� `�s � s.� �.i4 9aa i3.o� �.s4 s.z; 3.as a.a� 4.93 s.ai
<br /> plus upslope berm widt�i(G.Zd); r, � � 3.so s.s6 �•� io.� is.ra � 3.i2 aao a.z� aao s.is
<br /> �P Sr�w �_��.�_��.��{= �-�V�'r; ' " 'i` 3.93 S.q EJ3 1I.34 l39! 2.42 3.03 3.37 4.05 4.49 4.88
<br /> �,,,r� �.I SD 1 a4, ' ''.• ' 9 4.11 6.=3 9.09 13.04 1E.92 2.36 2.44 3.45 3.90 4.30 4.65
<br /> ��:e:����4 < ;:
<br /> �. � �10 �.I9 6.67 1Q00 13A0 2333 2.31 Zd6 3.33 3.73 4.12 4.44
<br /> Final Dimensions: � r �, ; 11 4.41 7.14 Il.11 1�.63 3Q�43 2Z6 2Ji 3.Z3 3.6! 3.95 4.26
<br /> . �" " ' 12 4.69 7.69 12J0 21A3 �3.�3 2.21 2.70 3.12 3.49 3.80 4.OE
<br /> �a '1 a a( �a
<br /> `i r. .
<br /> �j,�r`
<br />
|