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' G: . DOWNSLOPE DIKE WIDTI I <br /> 1. If landslope is 2.9 percent or less, basal �vidth includes both the <br /> upslope and downslope dike widths, <br /> 2. Calculate minimum mound size based on geometery: <br /> a. Determine depth of cleail sand fill at upslope edge of rock <br /> layer: Separation �_ feet <br /> b. Multiply rock layer width by landslope to deterinine drop <br /> ��.��<� <br /> iil elevation; Slo�e Dif jcrciice �IIoolNoh kd <br /> /G'' x c'� °'01 100 = � feet _,«,�P.,,��, <br /> c. Add deptll of clean sand deptll oE cleail sand for �w�wa�h ,,,�,� ,,,,,�„�Q <br /> �.� <br /> separation af upslope edge (2a) to deptll of rock layer to R„��aw,a� � <br /> kel <br /> rock depth and the deptll of cover to fiild the total mound �����w,a� <br /> �K, _ <br /> height at upslope edge of rock layer; <br /> _L ft + 1 ft + 1 ft = 3 feet <br /> d. Enter table on page bottom with landslope and upslope <br /> dike ratio. Select dike inultiplier of '`/� d <br /> e. Multiply dike multi�lier by upslope maund lleigllt <br /> � to get upslope dike widtll: ,o x � _ /� feet <br /> f. Add the deptli of slope difference (2b) to the upslope <br /> height to get the downslope Ileigllt � +�_= 3 feet <br /> g. Enter table on page �-18 witll landslope and downslo�e <br /> dike ratio. Select dike inultiplier of �/-o <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: �_ x ,�_ _ /` feet <br /> i. IVlininrnum�mound width is the sum of upslope dike <br /> width plus rock layer �Vl(�f�l �JIUS CjOW115IO�e CIIIC� W1(.�tll; �..':' <br /> r.� ff + �r� [� -i- � �� �� �.�� .��.�• ��.�C��'���'._.'.:UpslapcUikc�Widfh:�U.';':. <br /> f l = feet Kuck IScd�lNid�h�� / - <br /> j. Subtract the Minimum �viclth G.i frc�in the Absorption '��'� ` _ �� � �` � ::`;�;i�`: <br /> widt�l P.�� to find tlie A�lc�itioizal Do�vnslope i�ecluirecl f�r k°`k�d�.`°g�h�� "r`"''� <br /> � ` t � <br /> Absorpli�n _ �:��:�:�:�::;::: :::�:::::::::::�..: :::;::::..�:.::.�: :: ::::::::.::�:.:�::::. ::: <br /> � Upslopc l?ikc Widlh �,'�� ...Upslopc Uikc Width�- <br /> �ft - _f� ft = � feet -- .... .:� <br /> k. Add the Additional L�ownslope rec�uired for Absorption:`;�::�;�:�:;`:..::::�;;.::�:�;�.��;•::-:�:�.>�::��:�:;�'`:�:�:`::;�:�;�``�.�`:;�:�;�'�:�::::::� <br /> :•.�: fk>wrulopc U�kc idth _?/� ;., <br /> to lhe downslope dike �vidth and recalulate tlte Total <br /> Mound Width which is is the sum of upslope dike <br /> :;:�,::`.� <br /> wiath plus rock layer wiclth plus do�vnslope dike width �������'����� ���'���� � .�� ���'���������� �� ����'������ � <br /> _`D ft + �O. fl +�a ft = ,,�'�� feet �TotalLength_���-� <br /> 1. Total mound length is the sum of upslope dike width <br /> plus rock layer lengttl plus iipslope dike width; <br /> �ft + �e ft + 'Y� ft = J� feet <br /> uwns upe ps��{� <br /> 3:1 I:I S:t 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1 <br /> X slope <br /> 0 3.0 4.0 5.0 6.0 i 0 3.0 4.0 SA 6.0 7.0 8.0 <br /> I 3.09 4.17 5.25 6.J8 7S3 2.91 3.gi �.76 S.Fb 6.54 7.41 <br /> 2 3.19 135 5.5l+ 6.82 8.14 2A3 3.10 4.54 5.36 6.14 6.90 <br /> 3 330 �54 S.AB 7J2 8.R6 2.75 JS'7 d.35 S.(Yi 5.79 6.4i <br /> 4 3.41 4J6 615 �.89 9.i2 2.68 3.55 1.17 1.8d 5.46 6.06 <br /> 5 353 5.00 6.67 8.57 1U.77 2.Ft 3J3 4.0O 1.62 5.19 571 <br /> � 6 3.66 5.26 7.I4 9.38 12.07 2.54 3.2] 3.85 4.4I �.93 5.41 <br /> 7 3.80 556 7.69 ]031 13.73 2.dH 3.12 3.70 4.]J 4.70 S.IJ <br /> 8 3.95 5.88 8.33 1154 15.91 142 3.Q3 3S7 !.(15 4.49 1.&9 <br /> 9 4.11 6.25 9.09 I3.04 18.97 2.J6 294 3.15 . 3.90 4.30 4.65 <br /> 10 l29 6.67 10.0 I5.00 2J33 2.J1 2.8l, 3.33 3.75 d.12 �.C4 <br /> 11 4.4H 7.1� I1.11 17.65 JOAI 2.26 278 3.27 3.6i J.95 �16 <br /> 12 t.69 7.69 1250 21.43 dJ.75 21] 2.70 3.12 3.�9 3.80 4.08 <br />