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G. DOWNSLOPE BERM WIDTH sio�:4�•� �-`> �, co��r�� 1. If landslope is 1% or more, subtract rock layer width from adsorption width ,_ '.`� ��: �;�° 9 �: ' ' .. C xock r ,o 00 ` to obtain minimum downslope berm toe ��_� - c�e�,s�,d . 6"Topsoil_ ��ft -_.1_p ft = �feet a�soil '' • 2. Calculate Minimum mound Size a. Determine depth of clean sand fill at U�lope wdth Downslo�e Width 1D upslope edge of rock layer: ��d� Absorpti�n�dth Separation 3' - a.o+ ft = /, 0 feet b. Add depth of clean sand for separation (2a) at upslope edge, depth of rock layer (1 foot) to depth of cover (1 foot) to find the mound height at the upslope edge of rock layer; , J,v ft + lft+ 1ft = 3- v feet ,� � c. Enter table with landslope and upslo�e berm . ups��w�a�n . ratio. Select berm multiplier of �•`�s -` _ < Upsl pe�dth doo e;>on�;Rock Bed ?o.aov:b o� n :Upslope Width d. Multiply berm multiplier by upslope mound , �Z �� -d:�a� w�,a�, �,^�sep�epD)A s ---�-1�- f b,traop4o a <. �7 Qa q n`9 a`4°a a p au�su•n��e'aoS D i heig h t to fi n d ups l o p e b e r m w i d t h: `` ' o p 6 a '� � �� x - -�feet � e. Multiply rock layer width by 3 � landslo e to determine dro in elevation; F -: Downslope wdth�_ � P P Absorption�dth i • � x '`� %= 100 = � `' feet : . ;. .;: , , - : :.. :: . : f. Add depth of clean sand for slope To�l�n�n io�r difference (2e)at downslope edge, to the mound height at the upslope edge of rock layer (2b) to find the downslope height; � ft + -� ft= 3-�' feet g. Enter table with landslope and downslope berm ratio. Select berm multiplier of ` I � '� �� h. Multiply berm multiplier by downslope mound height to get downslope berm width: �� ; x �� '�__ _ ;' � feet BERM SLOPE MUL'TIPLIERS i. Compare the values of step G.1 ! '' and Step G.�YI � �t' Land DOWNSLOPE UPSLOPE Slope berm maltlpliers tor variout berm multlplfas for various Select the greater of the two values as the +o% �� 5��e� downslope berm width; 1 ';? feet j. Total mound width is the sum of � a� 5� � � 4 5 ' � 0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0 upslope berm (G.ZC�� 3.09 4.1� 5.26 6.38 7.53 2.91 3.85 4.76 5.66 6.54 7.41 width plus rock layer width (D.2� Z 3.19 435 5.56 6.82 8.14 2.83 3.70 4.54 536 6.14 6.90 plus downslope berm width(G.21�; 3 3.30 4.54 5.88 732 8.86 2.75 3.57 4.35 5.08 5.79 6.45 ! ;�> ft +,�_ft + �_ft = � �) feet 4 3.41 4.76 6.25 �.s9 9.r_ z.6a 3.as a.i� a.sa s.a6 b.o� k. Total mound length is the sum of upslope 5 3.53 5.00 6.67 8.57 l0.77 2.61 3.33 4.00 4.62 5.19 5.71 berm width (G.2d) plus rock layer length (D.3) 6 3.66 s.26 �.,a 938 ,Z.o� z.sa 3.23 3.ss a.a� 4.93 s.4� plus upslope berm width (G.2d); 7 3.80 5.56 7.69 10.34 13.73 2.48 3.12 3.70 4.23 4.70 5.13 ,�U {t -�- � S ft + �,Q_ft - "� �� feet 8 3.95 5.88 833 1I.54 15.91 2.42 3.03 3.57 4.05 4.49 4.88 �� }. r� S ,� � .� �rJ �� 9 4.l 1 6.25 9.09 I3.04 I8.92 2.36 2.94 3.45 3.90 4.30 4.65 ,�,�� 10 4.29 6.67 10.00 I5.00 2333 2.31 2.86 3.33 3.75 4.12 4.44 Fina1 Dimensions. I1 4.48 7.14 ll.11 17.65 30.43 2.26 2.�8 3.23 3.61 3.95 4.26 12 4.69 7.69 I2.50 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4.08 ;� � X /o � ��.