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, �• E-20 <br /> , ,, <br /> . DOWNSLOPE DIICE WIDTH � <br /> . If landslope is 3% or more,subtract rock layer width from � . <br /> adsorption width to obtain minimum downslope dike toe � � <br /> L_ft-�ft = ,� ft <br /> . . Calculate mound height at edge of•rock layer on downslope <br /> side; • ' <br /> a. Determine depth of clean sand fill at upslope edge of rock �•*o*•��.•• <br /> layer: Separation /. U feet ''�'�''""''' <br /> b. Multiply rock layer width by landslope to determine drop - � <br /> lTl elevation; Slope Difference roDre.s,Ks•aa.+r,..rRoc,r�rn,w <br /> ,:urMcr._i,..._._ <br /> �S�x .�; %+ 100 = .5' ft .�..-_- <br /> c. Add depth of clean sand depth of clean sand for <br /> separation at downslope edge to depth of rock layer to .. <br /> depth of soil backfill to get mound height at downslope <br /> edge of rock layer; ;. <br /> /-s' ft+ �, � ft + . � ft+ ..S" . ft = � ' ft .. <br /> d. Enter table on page E-18 with landslope and downslope <br /> dike ratio. Select dike multiplier of .S.r� <br /> e. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: 3.s x �'.o = ��.s ft <br /> g. Compare the values of step G.1 and Step G.2.f. Select the <br /> greater of the two values as the downslope dike width; <br /> 1 � feet x��.r«�attice� <br /> h. Calculate upslope dike width using upslope mound <br /> height and upslope dike multiplier from page E-18; <br /> x = ft up.,�a►x...�w,h cN <br /> i. Total n�ound width is the sum of upslope dike width plus �^v�dll�ewWth(e) <br /> rock layer width plus downslope dike width; <br /> ft + . ft + ft= ft <br /> 3. If landslope is 2.9 percent or less,basal width includes both the <br /> upslope and downslope dike widths. � <br /> a. Calculate downslope dike width using steps G.2.a. <br /> through G.2.f; I � feet <br /> b. Calculate upslope dike width using upslope mound <br /> , height and dike mulHplier from Page E-18; <br /> � -�� x �.o ft=�ft <br /> c. Add downslope dike width to upslope dike width to rock <br /> layer width � <br /> �r� ft+ /L� ;t + �,. ft= 3�� ft <br /> E-18 <br /> . �� � pS� <br /> 3:1 !:1 5:1 6:1 7:1 3:1 �:1 S:1 6:1 7:1 8:1 <br /> 7��Iope <br /> 0 3A lA 5A 6A. 7A 3A �A SA 6.0 7A !A . <br /> 1 J.09 1.17 516 6JA. 7S� 2.91 3.dS �.76 5.tb 651 7A1 <br /> 2 �.19 •35 SS6 b.S2 8.1t 2X4 3.70 t5/ SJ6 6.31 6.90 <br /> � 3J0 �SI S.� 732 E.l6 2.75 357 �1S S.tlO 5.79 6,t5 <br /> � 3A1 l.76 6?5 7.89 9.T2 2b6 3,15 �.17 �.84 SA6 6Db <br /> 5 35) 5.00 6b7 __ 157 • 10.77 2b1 J33 4A0 4.62 5.19 571 <br /> 6 3.66 S1b 7.1� 93e 1207 254 �.?] 3.85 �Al 4.43 SAi <br /> 7 3t0 SS6 7bD 101{ 1373 2A8 �.12 3.70 �I3 �.70 S.13 <br /> 8 �.95 5.66 83.7 ]15� 15.91 2,t2 3.Q1 3S7 �.fb �A9 {A6 <br /> 9 t.11 6?S 9AD I3A1 1l.VZ 2�6 2.41 ]AS 3.90 l�Q ♦.65 <br /> ]0 t29 6.67 IOA iS.OD 2333 231 2.E6 3J3 3.75 �.12 4.t� <br /> . 11 �AS 7.1� 11.11 1765 JO.0 226 2.76 31J 3b1 3.95 626 <br /> • 12 4.6V 769 1250 �l.t� 41.75 221 2.70 3J2 3A9 7.s0 4.00 <br />