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�►-���� S 1'��- <br /> �. �.J, ,_ ._,._". ._ �:,..;_. : , _,�,.. • , <br /> 1. If landslope is 2.9 percent or less, basal width includes both the <br /> upslope and downslope dike widths, ' ' <br /> 2. Calculate minimum mound size based on geometery: <br /> a. Determine depth of clean sand fill at upslope edge of rock <br /> layer: Separation I• `� feet <br /> b. Multiply rock layer width by landslope to determine drop ��� <br /> in elevation; Slope Difference „�„� , <br /> /v x � %a = 100 = . �-- feet ' <br /> _�.ei srP..,cm . � � <br /> c. Add depth of clean sand depth of clean sand for ���W,d�, <br /> �� --'����<<R�a <br /> separation at upslope edge (2a) to depth of rock layer to RohBedW�dN �_ <br /> rock depth an�i the depth oE cover to find the total m�und �" ��.��W,,�, <br /> height at upslope edge of rock layer; --�`� �- <br /> I, � ft + 1 ft + 1 ft = 3:� feet <br /> d. Enter table on page bottom �vith landslope and upslope <br /> dike ratio. Select dike multiplier of 3.�c.� <br /> e. Multiply dike multiplier by upslope mound height <br /> to get upslope dike width: �'• '� x �'.'�� = I� feet <br /> f. Add the depth of slope difference (2b) to the upslope <br /> height to get the do�vnslope height ? , `� + ,��_ _ �,:.� feet <br /> g. Enter table on page E-18 ���ith landslope and downslope <br /> dike ratio. Select dike multiplier of y .� � <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: � .� x '-�3'=�_ feet <br /> i. Mininmum mound �vidth is the sum of upslope dike <br /> ���idth plus rock layer �ti�idth plus do�vnslope dike �vidth; <br /> �_ft + �ft + �_ft = �� feet RockBeci�wid�h�'`i��"�"�':���:u���a�'w;arh---�..::;: <br /> j. Subtract the Minimum width G.i�from the Absorption ' ��� �`''`�� '`'���'�`��''`�r ': <br /> Kock Bed l,cn th�� � <br /> �ti•idth F.4 to find the Additional Do���nslope required for *:`=`��;._. g .;,.;;,�;*`�`� <br /> . � <br /> Absorption �04:,''':.::•;:::::":;:::::;::•:'::::•�:. :' •'•�::��::�::�:��.:��:���:�:�:.' �:.': �l��T <br /> �f t - �� f t - -Z�l f ee t u��o�Ui�w�a�;j��'�` ::�.:u�io��Uk�w�a�,�- <br /> L. ••:•:�:�:� <br /> k. Add the Additional Downslope required for Absorp�ion`�:::::-�;:�.:�::�::::.:?:.;':`��`.�;�:::��`.�:�•'��.����.����.�`��.�'�-���:'��:��'�.���:���������:���������..�: <br /> •.•.�. Downslope Dike Width __ ::;: <br /> to the downslope dike width and reca�ulate the Total <br /> ?vlound Width `vhich is is the sum of upslope dike <br /> FA4/ ��� �`�idth plus rock layer width plus do���nslope dike ���idth .���:��`�:,�`�:��'�:��`�:�`�:��`�: '::�:'�:`�:��'�:��`�:��: `�:�::�:��:�:�`�:�:::::: <br /> 1'1 -+'�a��'1 � Total Len th <br /> . ��i <br /> �_ft + �ft +��ft = �_ feet g ��- <br /> 1. Total mound length is the sum of upslope dike �vidth <br /> plus rock layer length plus upslope dike width; <br /> �� ft + L�-_ ft + 1'1 _ ft = ��_ feek <br /> wns ope ps ope <br /> 3:1 4:1 5:1 6:1 7:1 3:1 4:1 5:1 6:1 7:i 8:] <br /> �,.upe <br /> 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> 7 3.09 4.17 �.?6 6 39 7S3 2.91 3.0_ 4.76 S.fi> 6.:'� 7.47 <br /> i 3.19 �4..- � SSo ob3 d.', �.53 . _ '� �. , �36 E.. 6.t,J <br /> � _ 33J c_�-6 . �. 7_�_ a.5.. _.-- _-; .. . .-.:h `. .._ <br /> . 3.41 �.;6 o.2.S Zh'� 9.7� Z.i,+i _..- C.17 4.6� .i.:o 6.Ce <br /> 5 353 S.DJ 6.67 8..i7 IOT 2.67 333 4.(Y) 4.62 5.19 5.71 <br /> 6 3.56 i26 i.14 938 12.07 2.SS 323 3.ffi 4.41 4.93 5.41 <br /> 7 3.80 5.56 7.(fl ]034 13.73 2.48 3.12 370 4.23 470 5.13 <br /> 8 3.95 5.88 8.33 ?:54 75.91 2.42 3.O:i 3.57 4.05 4.49 4.88 <br /> 9 4.11 6.S 9.(N 13.(k 1d92 2.36 2.94 3.:5 3.90 4.i� 4.bi <br /> 10 4.29 6.67 10.0 1�.W ?l33 ?31 2.:� 333 3.75 3.:? 4.:3 <br /> .. 4.48 7.14 1111 1;.65 3D13 2.26 _'� 3-?3 3.61 3.95 4?b <br /> 12 4.69 7.69 1�:0 ZIA3 13.i5 221 2.%0 3.;2 3.69 3.eJ 4.6d <br />