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G. DOWNSLOPE BERM WIDTH slo�:_ �, co�e�r <br /> 1. If landslope is 1% or more, <br /> subtract rock layer width from adsorption width , ��R�°1 �-�000y , <br /> to obtain minimum downslope berm toe c�ean s�,a � � . <br /> ��"� ft- '�'� ft = �_feet ar�s�u b�Topsoil. <br /> 2. Calculate Minimum mound Size <br /> a. Determine depth of clean sand fill at u�►�wa�n Do�mslope Width <br /> 0 <br /> upslope edge of rock layer: R°ck)Wdth n���on Width <br /> Separation 3' - l� � ft = � .� feet <br /> b. Add depth of clean sand for separation (2a) <br /> at upslope edge, depth of rock layer (1 foot) to depth of cover <br /> (1 foot) to find the mound height at the upslope edge of rock layer; <br /> �• J ft+'lft+ lft = 3-s�feet <br /> c. Enter table with landslope and upslope berm .:upSioPe w�acn <br /> rario. Select berm multiplier of "��z'; � ` �'� <br /> U slo e W�dth. �tiao°o:Toad Rock Bed �o;Toabo 4 s .'.Upslope Width <br /> d. Multiply berm multiplier by upslope mound � ��tl 6-�- a� w,a�n 10 �d.6�-'0 0�a , , <br /> Zo `'�DQqa6a°Ad: � J�Q°°Da"pao�o <br /> height to find upslope berm width• L ' , q a $`t' �" Q a. <br /> . o ♦ e p6p p6DU DU ow o oDb 9 . <br /> ", x �> = l l feet ��� ��� � <br /> e. Multiply rock layer width by „ ; . ; : <br /> landslo e to determine dro in elevation; �° Do��o�w�ac���� <br /> P P Absorption Width� • <br /> �� x�_%= 100 = ,.6 feet , <br /> , .. . <br /> : . <br /> _,:: <br /> f. Add depth of clean sand for slope Total�, <br /> difference (2e)at downslope edge, to � <br /> the mound height at the upslope edge <br /> of rock layer (2b) to find the downslope height; <br /> t ft + , �: ft= ���1 feet <br /> g. Enter table with landslope and downslope berm ratio. Select <br /> berm muldplier of � -� �� <br /> h. Multiply berm multiplier by downslope mound height to get <br /> downslope berm width: <br /> `�x y• I = a� feet sExM sLorE Muc.��xs <br /> i. Compare the values of step G.1_j.Z <br /> and Step G.Zh 2 � ����' I`i' 3�$�� s `- �a DOWNSLOPE UPSLOPE <br /> Siope berm maltlpliecs tor vario�u be�m multlpliea for various <br /> Select the greater of the two values as the io% ��o���� �5����d� <br /> downslope berm width; /� feet <br /> j. Total mound width is the sum of � 4� 5� � � � 4� 5� � ':� �� <br /> 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 <br /> upslope berm (G.2C�� � 3.09 4.17 5.26 6.38 7.53 2.91 3.85 4.76 5.66 6.54 7.41 <br /> width plus rock layer width (D.2� 2 3.19 4.35 5.56 6.82 8.14 2.83 3.70 4.54 5.36 6.I4 6.90 <br /> plus downslope berm width(G.2i); 3 330 4.54 5.88 732 8.86 2.75 3.57 435 5.08 5.79 6.45 <br /> /c� ft + /�� ft+ ) �l ft = �feet 4 3.4t 4.76 6.25 ?.89 9.72 2.68 3.45 4.17 4.84 5.46 6.06 <br /> k. Total mound length is the sum of upslope 5 3.53 5.00 6.67 s.s� io.�� z.b, 3.33 a.00 a.62 s.►9 s.�� <br /> berm width (G.2d) plus rock layer length(D.3) 6 3.66 s.i6 �.ia 9.38 iz.o� z.sa 3.z3 ' 3.ss a.ai 4.93 s.ai <br /> plus upslope berm width (G.ZC��; 7 3.80 S.S6 7.69 1034 13.73 2.48 3.12 3.70 4.23 4.10 5.13 <br /> -' {t -� �� � ft + )�'i ft- .�_Z__ feet $ 3.95 5.88 833 11.54 I5.91 2.42 3.03 3.57 4.05 4.49 4.88 <br /> 9 4.11 6.25 9.09 13.04 18.92 236 ?.94 3.45 3.90 4.30 4.65 <br /> ��� 10 4.29 6.67 10.00 I5.00 2333 2.31 2.86 3.33 3.75 4.I2 4.44 <br /> Final Dimensions. �� 4.48 7.14 I1.11 17.65 30.43 2.26 2.78 3.23 3.61 3.95 4.26 <br /> l2 4.69 7.69 12.50 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4.08 <br /> ��(1 X 3� <br />