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. r , • <br /> ` G. DOWNSLOPE DIKE WIDTH <br /> 1. If landslope is 3% or more, subtract rock layer width from <br /> adsorption width to obtain minimum downslope dike toe <br /> �o ft- � ft = _�feet <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 : 3 ft- � __j_ feet <br /> b. Add depth of clean sand for separation (2a) i foot Cover <br /> at upslope edge, depth of rock layer (1 foot) <br /> i foot Ro ed <br /> t0 depth of COVe1' (1 foot) to fi11d the Separation ' reet <br /> mound hei ht at the u slo e ed e of rock , Slope Oitference �� et <br /> g P P g l,pslope Width <br /> � ft + lft + Ift = �_ feeE teet <br /> ROCk Bed Wid[h <br /> c. Enter table with landslope and upslope dike ratio. _10_reec Downslope Width <br /> Select dike multiplier of 3. 0 3 �eet <br /> d. Mulriply dike multiplier by upslope mound height <br /> to find upslope dike width: L x ,03 = q.! feet <br /> e. Multiply rock layer width by landslopto determine drop <br /> in elevation; Slope Difference - <br /> /0 x�%a -� 100 = 0.7 feet <br /> f. Add depth of dean sand for slope difference (2e) at <br /> downslope edge, to the mound height at the upslope edge <br /> of rock layer (2b) to find the downslope height; <br /> 3 ft + D.� ft = 3.� feet <br /> g. Enter table with landslope and downslope dike ratio. <br /> Select dike multiplier of S.�8 <br /> h. Muldply dike multiplier by downslope mound height (2� <br /> to get downslope dike width: 5.88 x 3.�� = a a feeE <br /> i. Compare the values of step G.1 and Step G.2h Select the <br /> greater of the two values as the downslope dike width; <br /> ��. feet <br /> j. Total mound width is the sum of <br /> � 'u _�coe wiatn <br /> upslope dike (G.2�) width plus rock � 3�feet <br /> layer width (D.2) plus � Ro�k eed W,oth <br /> downslope dike width(G.2i • �'ee` <br /> �� � Upslope wiath Up to��e w�c <br /> � `'�ft +�_ft + a2 r� ft = � feet 3 �L feet �tee� <br /> � <br /> k. Total mound length is the sum of � <br /> upslope dike width (G.2e) plus rock layer °o"��'�a°°f et°Li <br /> length (D.3) plus upslope dike width (G.2e); <br /> °/, 1 ft + .�8 ft + q. 1 ft = �(.2 feet <br /> To[at Length fj/ Z� <br /> �O <br /> owns ope ps ope <br /> 3:] 4:1 S:1 61 7:1 3:1 {:1 5:1 &1 7:] 8:1 <br /> 1G alope <br /> 0 3.0 4.0 S.0 60 7.0 3.0 l.0 S.0 60 7.0 8.0 <br /> 1 3.09 d.17 526 6.38 753 291 3.85 4.76 5.66 6,5� 7.{7 <br /> 2 3.19 !�5 556 6.82 8.1! 2gi 3.�0 15d 5.36 6.11 6.90 <br /> 3 330 1.5d 5.88 7.32 8.86 275 357 6.35 5.08 5.79 6A5 <br /> { 3A7 4.76 6.25 7.89 9.T1 268 3.15 4.17 d.&6 5.46 6.06 <br /> 5 353 S.OJ 6.67 8S7 ]0.77 261 3.33 4.00 d.62 5.19 5.71 <br /> 6 3.66 5.26 7.74 9.38 72.Q7 2.54 3.23 3.85 l.41 �.93 SA7 <br /> 7 330 �556 7.69 103t 13.73 248 3.12 3.70 �.73 �.70 5.13 <br /> 8 3.95 C,� 833 1154 15.91 242 � 3S7 �.OS d.49 dB8 <br /> 9 l.il � 9.09 1J.Od 18.92 Z36 3.d5 3.90 4.30 !b5 <br /> 10 4'9 6.67 10.0 15.00 2333 231 286 3.33 3.75 d.12 �.d4 <br /> 11 /.� 7.74 11.11 17.65 30.43 226 278 3Z3 3.61 J.95 «b <br /> 12 t.69 7.6a 1250 21.a3 13.75 221 2�0 3.12 3.49 3.80 LOB <br /> � <br />