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G. DOWNSLOPE DIKE WIDTH <br /> 1. tf l,andslope 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 1. l� feet <br /> b. Multiply rock layer width by landslope to determine drop <br /> ��� <br /> in elevation; Slope Difference ;:�� <br /> ___�-_ %+ 100 = -feet ��;;� <br /> c. Add depth of clean sand depth of clean sand for ���N _:��;��� ,, . <br /> separation at upslope edge(2a) to depth of rock layer to- R��„�,�� <br /> rock depth and the depth of cover to find the total mound -`"` �„�,w <br /> height at upslope edge of rock layer; -'"` �_ <br /> J• D ft + 1 ft + 1 ft= 3 .v feet <br /> d. Enter table on page bottom with landslope and upslope . <br /> dike ratio. Select dike mulHplier of � . �QS-� . <br /> e. Multiply dike multiplier by upslope mound height � <br /> to get upslope dike width: x = feet w�� 3.°+� _� <br /> f. Add the deptli of slope difference(2b) to the upslope '��0 `��'` � `��� � t�`� ��'�'�+'s��� <br /> . height to get the downslope height + = feet UQ5Lo4� 3..�� ��.4s :�a' <br /> g. Enter table on page E-18 with landslope and downslope <br /> dike ratio. Select dike multiplier of <br /> h. Multiply dike multiplier by downslope mound height <br /> to get downslope dike width: x = feet � <br /> i. Mininmum mound width is the sum of upslope dike <br /> � width plus rock layer width plus downslope dike width; <br /> ft + ft + ft= feet Rak6odWidth��� 'U�b�ai�w�a�''�"�"' <br /> j. Subtract the Minimum width G.i from the Absorption '�'�''� '�`'•"•`` <br /> � width F.4 to find the Additional Downslope required for Rak Bed Length <br /> Absorption � s�J l6� `•`:�;�::::::: . . . '=���'��'�'''�'`������•� la' <br /> ft= ft= feet u�b�°'i�'^''a�;'� ::u�b�ai�wai�_ <br /> k. Add the Additional Downslo e�re uired for Abso tion::;::::::::::::::�:::�•'.•:::�� <br /> to the downslo dike width a d re alulate the Total� �`"'���`•°i�.W��'..�.w�. . .�' <br /> Pe :r'• <br /> Mound Width which is is the sum of u slo e dike <br /> P P <br /> width plus rock layer width plus downslope dike width '''�''''''''`''`�' '`'''''''''''' <br /> �ft+ ft+ ft = feet �-T°���'� --'� <br /> 1. Total mound length is the sum of upslope dike width <br /> plus rock layer length plus upslope dike width; <br /> ft+ ft+ ft= feet <br /> �,s� PS o� <br /> 3:1 �:1 S:l &1 7:1 3:1 4:1 5:1 &1 7:1 8:1 <br /> !L slope <br /> 0 3A d.0 5.0 GO 7.0 3.0 4.0 5.0 GO 9.0 8A <br /> 1 3.0➢ 417 5.26 6.38 7S3 Z91 3.85 4.76 5.66 6.5� 7Al <br /> 2 3.19 {35 SS6 G82 6.14 263 3.70 4.51 5.36 61� 6.90 <br /> 3 330 t54 5.86 7.32 8.86 2.75 357 4.35 5.06 5.79 6AS <br /> �_---_3.t1----_�7 6.25_ 7.89 9.7L 266 3A5~ d.17 4.84 5.06 6A6 <br /> 5 353 5.OD G67 SS7 ]0.77 261 � 4.OD 4.62 5.19 5.71 <br /> 6 3.Q6 S.Z6 7.14 9.38 1207 2.54 3.Y� 3.85 4.41 4.93 SAl <br /> 7 3.80 5.56 7.69 1034 13.93 248 3.12 3.70 1.2� 4.70 5.13 <br /> 8 3.AS 5.86 8.33 llSd 15.91 2.42 3.R3 3S7 4.nS {A9 4.88 <br /> 9 �.11 6.25 9.09 13.04 18.92 236 2% 3.45 3.90 4.30 4b5 " <br /> 10 �.29 667 10.0 15.00 2333 2.31 2.86 3.33 3.75 d.12 4.44 <br /> 11 4A8 7.1{ 11.11 17.65 30.43 2.26 278 3.13 3.61 3.95 4.26 <br /> 12 4.69 7.69 1250 21.43 A3.75 2.21 2.7b 3.12 3.49 3.80 4A8 <br />