|
� . �., � .uvw�v5wi'� UIKE WIUTH '
<br /> ' � 1. If la�dslope is 2.9 percent or less,basal width includes both the �
<br /> upslope and downslope dike widths, � . �
<br /> ' ;
<br /> � � 2. Calculate minimum mound size based on geometery: ' . � �
<br /> a. Determtne depth oE clean sand fill at upslope edge of rock . �
<br /> layer: Sep�aration l.n feet + � .
<br /> b. Multiply rock layer width by landslope to determ�ne drop !
<br /> . , -
<br /> in elevation;Slope Di�ference "`"°"" �'' ��` �
<br /> ��:'�.. .
<br /> — x � — �+ 100= — feet ��,T,,.., ::<�;,;.�:..<.�,�,�.:;,:
<br /> c. Add depth of clean sand depth of clean sand for � � ° :..:::�;'::>�<°::�{�.:;. : .
<br /> �.., .. .c i�w+�,.�+M:.:��::
<br /> . separation at upslope edge(2a) to depth of rock layer to �.,M . ��::::�::s::::�;:�::�
<br /> �LQ�rM . .` ...:.,.•.5.::•...::'�:.,.
<br /> rock depth and the depth of mver to find the total mound t „�,.�,w. '�
<br /> hei ght a t u p sl o p e e d g e o f r o c k l a y e r; � �.
<br /> '�_ft+ 1 ft+ 1 ft= 3.D feet
<br /> d. Enter table on page bottom with landslope and upslope � ; �
<br /> dike rado. Select dike mulHplier of_ S,o . . �
<br /> e. Multiply dike multiplier by upslope mound he�ght ;
<br /> to get upsiope dike width: �.v x s.v = Is� feet �
<br /> f. Add the dept�i of slope diEference(2b) to the upslope � � � �
<br /> height to get the downslope height ---+--�--- fret �
<br /> g. Enter table on page E-18 with landslope and downslope ' � .
<br /> dike rallo. Select dike multiplier of �- � � �
<br /> h. Muldply dike mulNplier by downslope mound height �
<br /> to get downslope dike width: - -x� - -...feet ' !
<br /> ` � � i. Mininmum mound width is the sum of upslope dike • ' '
<br /> width plus rock layer width plus downslope dike width• •:•:{•�:r:��c f ; c�� r..�..��c�s� `
<br /> � :t�J't�t tl�/tit tiJ' .Sf.St�I tl 7.Sf J tit Lt J�I 4 V
<br /> �S i'? {•r�r..:..�. r: r.. r.r. r.�{�{k
<br /> . • - t-+---�..�t= feet R« �a�►i��i� �n.. 'c.eU�:f�tx�'rr�dd��.. { {�
<br /> �r� `.T� •r�.�.�•w�.�.�ti r ♦ �l tI Sl
<br /> ,� • • � S�t�ti;•;ti, »�..{ ... { {• � � � � � �N�hS�:�5 '
<br /> S u b t r a c t t h e M i n i m u m w i dt h G.i�rom the Absorpt�on .L�f�;��t� ' {f�{�ft ,
<br /> width F.4 to�nd the Additional Downslope requlred for : a �h-1� r .'.
<br /> ��:
<br /> . :�r: '+{ I �f4i; �
<br /> Absorphon � • �us•�::•t:•:.ti.::ti��.• :;u•;,i;:t;.:ti;:.•:�ti,t�::.;;�:',�
<br /> .. {..t.:..�..t•.t•.f..: ;..{..i..{;:...
<br /> {t bi�VYidlh t'♦;{+r)+r)t� iJ�.Upbpe Uilae IM{dd�J,�
<br /> �_...--.._ �� � 1 �ltil��i yh
<br /> •`= ---ft-=— feet - �:r' 1tJ 1j L:):!Z!y Y N w N�t N y M
<br /> �.S�r�ti�y1h\h\Y�ti{4{�:hlti� i�.l�.�{h{ti{ {N{N(h{tifh{
<br /> • Sr Sl Sl�T tit SJ�t�'+!�J �t tiT 1l tl tit I�t til�l�f tfZt Lf tt
<br /> k. Add the Additional Downslope reqw '• '• �.{h� { { { '•:{ {y��< � cNc c:.t4t.t�c�chc;�c
<br /> red for Absorption �t:i:_, :,,;,;,;,�, � ; t��,w��, . , ,
<br /> ;;�4�.t:t �»t�t,���. �•
<br /> to the downslope dike width and recalulate the Total '''°`•'�w�;;.�';��'t:'{u{ � -�- �'{
<br /> '+i tr ti:. b.+:�4►r. '�r'tit'b'4'y'V'tir'b'4'b'4'L'V'�:
<br /> .,t.,S.,...d.,�.,!•.{ {w;.ta{�.{..�.{.{w{ { { t.�{a{..{{
<br /> Mound Width which is is the sum of upslope dike •''ff'''`frs`'�°f�=�'1;",�}'"';'"''`„'`,',`'.`''
<br /> ��5�• � � 1 ti Mlti�ti� �y�4� � � Sti�h� ��
<br /> .:s::'i+r��'�r+r• N '�N�f N�f 1l�f Sl�!tit�t tf
<br /> width plus rock layer rvidth plus downslope dike width ''{..�..`'f;{ ,~ ,;�;` �;{;�.{;` �.{.r.
<br /> , �
<br /> �S ft+_ �a ft + �S ft = � O feet �'—T°'''�°i�-L- ---'+�
<br /> 1. Total mound length Is the sum of upslope dike width ; ' �
<br /> plus rock layer length plus upslope dike width; ' �
<br /> /� ft +�_ft+��ft= �Lfeet � ,
<br /> . ;
<br /> �.� ps :
<br /> !:1 �:1 �1 ki 7:1 h1 1:1 �1 � kt !:1 M I
<br /> � •
<br /> 0 7A l0 !.0 LO 7A 1.0 �.0 S.0 l0 7A IA �
<br /> 1 7.01 lV l.�i l�1 7.SJ ttl �.� 1.7i S.6i RSI fAl
<br /> : �.» us s.s� aa �.�� :e� �.�o �.s� sx au i.+o ,
<br /> • � �3o as� c� 7.0 �.eu �n �s� ��s s.a s.r t�s �
<br /> —� � ��� �.n �.a �.w �.n t�e a.a �.r �.a s.� c.a
<br /> s �s� s.00 �.a �.s� �o.n ta �.� . �.ao �.a s.n a.r�
<br /> � a.� s.x �.�� r.� ito� � �.n �.es �.a �.n s�i
<br /> � a�o s.sc �.a �o� u.» :u �.i: a.�o �.n �.r� s.0
<br /> � �.+s a.M w »s� �s.�i zu �.m as� �.a� �.n �.a
<br /> � �.0 a�s �.a u.a u.n t� �.M �.0 �.+o �.b �.es
<br /> 10 �21 lq ,l0A 15dID lJ�7 �.JI t.IK 7.aI 7.1f 1.1! I.N
<br /> II /A1 l.11 tl.11 U.t! JO.q 1}b �.f1 !.!> >.61 �.�! 1.�{
<br /> fi �M f.M 17l0 ll.q q.7S 7.f1 J.711 . �.I2 �,q 1.�0 IA/
<br />
|