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� . , G. . DOWNSLOPE DIKE WtUTf� � ' 1. �f landslope is 2.9 percent or less,basal width includes both the ! upslope and downslope dike widths, , � 2. Calculate minimum mound size based on geometery: ' a. Determine depth of clean sand fill at upslope edge of rock layer: Separation l.3 feet , . � b. MulHply rock layer width by landslope to det•ermine drop ! in elevation;Slope Di�'ererrce 1MiOi"' '��: � � 1Q_x�_96+ 100= -"�- feet ( _. t . c. Add depth of clean sand depth of clean sar►d for �� ' � , .s* � j ... t : .. .�_ ' �..� �...��.�..." separation at upslope edge(2a)to depth of rock layer to �.� ._..... rocic depth and the depth of cover to find the total mound ,,,,;`� height at upslope edge of rock layer; . � . �`�.� ��ft + 1 ft + l ft=�,�feet ! ' d. Enter table on page bottom with landslope and upslope � dike raHo. Select dike mulHplier of �.'7 f ; e. Multiply dike multiplier by upslope mound height � � ; fio get upslope dike width:�_x 3.7 =��feet ; � ; f. Add the deptli of slope difference(2b) to the upslope ! height to get the downslope height_�+�� 3• S"feet � ; ` � ,' . g. Enfier table on page E-18 witli landslope and downslope , dike ratio. Select dike multiplier of �.`�' � ' h. Multiply dike multiplier by downslope mound height � " I to get downslope dike width: 3. S x �. '"__�,j'_feet ' . �"� i. Mininmum mound width is the sum of upslope dike ' width plus rock layer width plus downslope dike width• '••' 'f�•• • •'r•:•' r• :j � . 2 •��tiyt��i�� Stiy��• ti M .�.�ti14 •jti .;. ti�.,S'•: .�'. . -__ _ --- _ _� � r::::?r:?s:!;srt�tr:;rr°fr; r.•r.:r.�ti��:4:ir;tf+i si ti __ft*__------- Ft + :.:.:. :• , __ f f= feet R« e�a w�dii�10 :.�:;�� -�...f%''��..� ..� ,;.;.. , , . , .iwu j. Subtract the Minimum width G.i�rom the Absorpdon ' ''''�� •:••; •:;.;~` ; {,;;'' y{yj;`�`''�;� :�;:�:{ �:;;;;• width F.4 to find the Additional Downslope required for R �"� � r Absorption �;:_ :::...::::::::::r �• :�:•:r:r:�=r:;.::.•.:r:a:�::::.0 ti�:; . : •:. '{a�,r• ti{.,1•,;•.ti•.ti•.{�:��L�L{'�'��'ti .•:. �� t�' Upf�DplUR! Iddl_L'�c .._ti• . 5.::•:{•t.':llpt ----�T-----��t=-__---- feet .u: .s::::.:r ti�s.)..},...)°��);..,u"' �:'��•SyS•••ti�N�ytySy��Sti•yS•�lyfyl 1 S'�1ryd��1 �hfi'�.y� .•r.�r s:.�i�:.•:.: •r.� Si tir.ti::+.:••r tis tir sr�r sr:r st..r i k. Add the Additional Downslope required for Absorption•�r��;:r y�tir�::ws,,��••.��{:.�:��,;, •:..::. r..t t. .ti.,�.,r. ., to the downslope dike width and recalulate the Total �'�"�'''"''`''�`''"''��' )�) � ) ) w . c•.{•.e�.t••:•.•. {; . 'ti:;�rr�:.�rftit�;.tir.tr�:. ;ttj'�r'Srf'�t'tir'+a'�r r'N'L'+t'V'4'tir ti� i �S��i� ti�ti�� tiitil4�ti�tiSti�yhyY�4 Mound Width which is is the sum of upslope dike '•��_��``��s''• �''a.`'.{"�•''•"`�)`'}�'•'ft'c's:'.` : M:�'�. A tiYYS ti�ti1yS�•S 1ti 1 ��{�t;''rti.�;. ;tie.•.r;{;�t;�t�t{.•;.�lr:;•�t•s:rti$sf I width plus rock layer width plus downslope dike width `'~' ; ,�_ft+_�ft+��ft =��feet �-T°��"'�' ��'' --� 1. Total mound length is the sum of upslope dike width � plus rock layer length plus upslope dike width; ; �ft+��ft+ IZ ft= _ �r2feet IS G � /S � � I x� aM s�ima� �� r.� �� :� �� > >:� �:� i s 0 � S.0 LO S.0 6.0 7A 3A {.0 S.0 6.0 7A LO I 1 3Ai {.17 S.2i �.�/ 7.53 211 1.76 S.ib iSl 7A1 ' 2 a.l! SS6 6.l2___-.---Ll� 2t3 3. �.5� 536 �.1� 6.lD ; : • T--7�'-� 5.M --7.32 !.!6-_ -"I. � S.O6 S.7! 6,15 � � 3A1 �.76 6.75 7.l9 9.T2 2E! 3.6 {,17 !.!1 5.�6 6.Q6 S !S3 5.00 6.67 l.57 10.77 261 333 1.00 1.62 5.19 57l i 6 3.66 5.�6 7.1� 9.31 12.07 t51 3.7! �.lS �.�1 �.f� SAt ; • 7 �JO S.li 7.M 103{ 13.77 iM 3.12 3.70 l?J 4.7U 5.1� � / 9.�5 S.M {.31 113� 15.9t 2�2. 3.Q1 3.57 1.� {,N �J/ � �' 9 l.It 6.�5 9.09 1�.01 1l.92 2.36 t91 3.15 3.90 1.30 �.AS"' 10 �29 6.O lOA 15A0 �333 2.31 2.l6 333 3.75 1.12 {.N il �.Y ' 7.1� It.11 17bS �OA3 tId 2.7! 3.73 �.61 !.% ��6 i I2 �.bi 7.69 1250 21A3 IJ.75 t21 2.T0 3.12 3A9 �.l0 IA! 1