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\l. .:\/I�la ....-\i� ♦_ ✓�1��. 1 \ �i� . . . <br /> 1. If landslope is 2.9 percent or less, basal widtil includes botli ille <br /> upslope and downslope dike widtlls, <br />� 2. Calculate minimum mound size based oi� geometery: <br /> a. Determine deptll of clean sand fill at upslope edge of rock <br /> layer: Separation ,�.Z feet <br /> b. Multiply rock layer width by landslope to determine drop ���tt <br /> in elevation; Slope Differer�ce „�,Ro, , <br /> � x - % = 100 = �- feet ��,K,��,.��, <br /> c. Add depth of clean sand depth of clean sand for ���a�, ,�„����rt� <br /> separation at upslope edge (2a) to depth of rock layer to K��,a�, � <br /> rock depth and the depth of cover to find the total mound �,,,��W,��, <br /> height at upslope edge of rock layer; - �M �- <br /> � .2ft + 1 ft + 1 ft = 3 ,2- feet <br /> d. Enter table on page bottom with landslope and upslope <br /> dike ratio. Select dike multiplier af y <br /> e. Multiply dike multiplier by upslope mound height <br /> I <br /> to get upslope dike width: �z x �__ �_ feet vs� ls <br /> f. Add the deptli of slope difference (2b) to the upslope <br /> height to get the downslope height �- = feet <br /> g. Enter table on page E-18 witlt landslope and downslope <br /> dike ratio. Select dike multiplier of �-- <br /> h. Multiply dike multiplier by downslope mouild height <br /> to get downslope dike width: x - -= feet <br /> i. Mininmum mound widtll is the sum of upslope dike <br /> �vidth plus rock layer width plus do���nslape dike width; ::; :.:: •;.::;•.`:_:•:�.;•. <br /> ____f�+____-_-��.t.+.�t..=_. feet k«kts�e'w�e�h:•:��::•�.:•:�•::�.;u�b�a�w�d�i;�'��'''.�.�'." <br /> .•.��.�..��..�.... <br /> ..... <br /> ... .; �;:::::., <br /> �- •.•....................................:.•.::�.:. <br /> j. Subtract the Minimum ���idth G.i�fram the �bsorption ''�`� ``'����'`''' ::...�`...';_; <br /> �vidth F.4 to find t11e Additional Do���nslope rec1uired far { RockE�cdLcngch :�:::�r <br /> Absorption <br /> :�:�:{::�:;:::;::;:::�:��::'�::�:�. :::;:�:;:::;::::;�:::�::�:::�:::�.::�:::�::`:�::�:�::�::�: <br /> U lo x l>ikc Width Upslope Dikc Width_L�_ <br /> ...,. .,•.•.•.•.• <br /> F' F � :::'� '•"•"."."•' <br /> _ _ft - .-ft-=._--.. feet • ��� �������''��''��''��' - - <br /> k. Add the Additional Do���nslope required for Absorption `:�::'�`,:�.;`:�`;::.�:`:�.:�::�;�.�:�:`•.�::�.����'w��.'��:'�`��`•���'��:���w��:���.�����'�������-���;.:�:: <br /> :•:•: Do nslope Dike id h �_ •.:: <br /> to the do���nslope dike ���idth and recalulate the Total <br /> '��iounci 4�'i��f�l Z�'�l1C�l 1S 1S tllE SUI:1 of upslope dike <br /> ��;i�ith plus rock la�•er ���idth plus do��•ilslope di�e "�idth ������������`������`������ �'�'.`����'������� �'������������'���. <br /> � �- � _ �� Totdl Lcngth��' -i� <br /> ft + 0 ft + ft feet �`- <br /> 1. Total mound length is the sum of upslope dike �vidth <br /> plus rock la}�er length plus upslope dike width; <br /> �_ ft + _�� ft + _/�_. ft = �� feeE <br /> owns ope ps opc <br /> 3:1 t:l 5:1 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1 <br /> 76 slope <br /> 0 3.0 <.0 5.0 6.0 70 3.0 40 S.0 60 7.0 8.0 <br /> 1 309 {.17 5.26 b.Jf{ JSS 297 38i <76 5.65 6.54 7.C1 <br /> 2 3:9 4.35 S.So 6.8? !'.14 �.C.3 i70 4.>7 53( 6.1< 6.90 <br /> I 3 3i7 <.$4 5 K: 732 e S� :.75 35? a ii iu'i 5J5 6.3i <br /> � 3.<I <76 6.2i 7.ti9 4.7? 2G6 3.G5 4.77 <.&1 5.66 6.06 <br /> S 353 5.00 E.67 6.57 10.77 2.6I 3.33 4.00 1.62 5.19 5.71 <br /> 6 3.66 5.26 7.14 9.38 12.07 2.St 3.23 3.i15 6.41 �.93 S.dl <br /> 7 3.t0 5.56 Z69 )034 13.73 2.48 3.12 370 1.2J /.70 5.13 <br /> B 3.95 S.Bd � 6.33 1154 15A1 2.31 3.(73 3.59 �.(15 lA9 C.88 <br /> 9 �ll 62i 409 13.(tii 15.92 236 2.94 3.i5 3.90 l30 C.65 <br /> 10 /29 6 67 10.0 15.(YJ 2333 2.31 2 R6 3.33 3.75 6.12 I.d4 <br /> .l 1.42 7.1C 11.11 17.65 30.43 2.26 2 76 3.21 3.61 3.95 C26 <br /> 12 <.oi 7.69 1250 21.13 a3.7; 2.21 2.90 3.12 3.69 1.80 �.08 <br />