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1;.� UObYNSLOPE DIKE WIDTH <br /> 1. �If landslope is 39'0 or more,subtract rocic layer width from � <br /> adsorpHon'width to obtain minimum downslope dike toe for '" ' <br /> absorption: , � �, <br /> r!,.� ft-�ft =,�Zfeet � . � <br /> 2. Calculate minimum mound s'ize based on geometery: <br /> a. Determine depth of clean sand fill at upslope edge of rock <br />� layer: Separation /.D feet <br /> b. Multiply rock layer width by landslope to determine drop ,,��,,,,,,;.;,,,..:: <br /> in elevation;Slope Difference � +�� <br /> �x_�%+100= • � feet +;�;-,- >`kr� '::`, <br /> W <br /> .. ...::.: �::.i. .. j....:.....'.:.: <br /> c. Add depth of dean sand depth of clean sand for � �"-f}�'����`���"`'�������� � <br /> , ,...:. <br /> r„ ' ,.2 r..Y:a'r.:a;:�.::;::.. <br /> separation at upslope edge (2a) to depth of rock layer to � � �����`��"����`�'�`�����' <br /> rock depth and the depth of cover to find the total mound �`� <br /> height at upslope edge of rock layer; <br /> �_ft + 1 ft + 1 ft = �,o feet � <br /> d. Enter table on page bottom with landslope and upslope <br /> dike ratio. Select dike multiplier of 3 . I � . <br /> e. Multiply dike multiplier by upslope mound height � <br /> to get upslope dike width:3,� x :�,12 =_g_feet <br /> f. Add the depth of slope difference(2b) to the upslope <br /> height to get the downslope height <br /> � .c� + • � _ ? �� feet <br /> g. Enter table on page bottom with landslope and <br /> ' downslope dike ratio. � <br /> Select dike multiplier of J •J l:- , . ' <br /> h. Multiply dike mulNplier by downslope mound height <br /> to get downslope dike width:3.� x_t.5r. _ � � feet <br /> i. Compare the values of step G.1 and Step G.2.h. Select the • <br /> greater of the two values as the downslope dike width; � , <br /> . � feet .:.,..;,. :. : :. :::. ... ........ . .......:.:. <br /> .:.:. :i:::i::::::::;:r:::::••.:i ti:... <br /> Total mound width is th um f up 1 p e�wi��'`• :`:::'°: •`•;•.;•.:•.'•.�•. `•''�.`•.`;:ti'`. <br /> j. e s o s o e dike R« �'�P'i°a'D1��'"����� ti{�ti.. <br /> ti7 �f� t.•f.�t.�f��J M J r•f.V t.�!ti:. <br /> 't. ::d. . t,t:l:f.,�,I.,t.,{.,� <br /> :"C'�:•�''�'•��'�''�''�'' <br /> 'S:�. <br /> width plus rock layer width plus downslope H« ��8 ' '„',' :e•.�.,��..',��.'�.�.�'f. <br /> dike width; •::: :�:: ..;.:..�..�..�.:.::�: . <br /> �•.. _ . . . 'i�'.: <br /> f t + f t + f t - f e et u�+��ak�wia�;' �:iip:i�'ou«wiaw <br /> k. Total mound len th is the sum of u slo e ��r: :�;:i::���::: <br /> g P P 'i�;;:iop:'E�i� wraii;'` ': <br /> dike width plus rock layer length plus � � � •��� �'''' <br /> �•ti'� •�5�� �•�' ��ti'����:t:: <br /> upslope dike width; <br /> ........ ..:....:.. .... ... <br /> � f t + � � i f t + �- - f t= � f e e t Ta,�Ln,s�, �� .----.� <br /> , . , .� � � , � ��. �.y.., <br /> �,:o� p:o�k <br /> 7:1 h.l S:1 &1 �:1 3:1 �:1 5:1 kl 7:1 !:1 <br /> x dope <br /> 0 ]A �.O S.0 6.0 7.0 3.0 �.0 S.0 �.0 7.0 �A <br /> 1 3.09 1.17 S.I6 63s 7.5� 2.91 3.65 4.76 5.66 S.SI 7.11 <br /> 2 3.19 t.3S 556 6.62 l.tt 263 3.70 l.51 5.36 6.it {.90 <br /> 3 330 t54 S.ed 7.32 6.86 2.75 �S7 1.35 S.OA 5.79 6.15 <br /> � JAl �.76 6.75 �.a9 9.72 2.6s ].l5 �.17 I.M 5.16 6.06 <br /> • S 353 5.00 �67 l.57 10.77 2.61 �.17 �.00 �.62 5.19 5.71 <br /> 6 �b6 5.26 7.11 1.Je 12.07 2.51 3.T7 3.lS �.Il 1.41 5.�1 � <br /> 7 »0 C.S56� 7.69 .. . 10�1 13.7] 2.M _�3.i2% 7.fi 1.7] 1.70 S.1) • <br /> ! 3.95 S.M !J7 lIS1 15.91 2.�2 3.01�� 3.57 I.QS �.19 �.t! <br /> 9 {.11 6.?S 9.09 17.01 16.92 2.36 2.91 3.15 �.90 1.]0 �.66 <br /> 10 1.29 6.67 10.0 15.00 2JJ3 2.�1 2.86 �.31 3.75 1.12 �.N <br /> 11 1.{� 7.1� 11.11 17.65 �0.1) I16 2.75 3.?> >.61 7.95 �16 <br /> t: �sv 7.bv t�so it.�� ��.�s 2.�i 1.�o a.tz �.�o �.eo �.a <br />