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•c�. DOWNSLOPE BERM WIDTH ��- c��n�• 1. If landslope is 1% or more, , ' subtract rock layer width from adsorption width �� . � 4.- -:� .'� ;` r"T.�.�. '' � Rock t. ,«_:« .: .r�:_•.... to obtain minimum downslope berm toe a�;ns.�,a � . ' Q. ;a�.�..•�::`..+: � ft -� ft =_/,C1 feet ahudSol! �.� . ... 6.T°�°'i s��- 2. Calculate Minimum mound Size a. Determine depth of clean sand fill at �P�'o��nd�, �m � upslope edge of rock layer: ' � Separation 3' -�� ft = 1, � feet �'d�' ', n Width : b. Add depth of clean sand For separaHon (Za) 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; , - �� ft + lft + lft =��L2 feet c. Enter table with landslope and u slo e berm '��`'�� `�� . : � . . �Up pe W[dth � 3 - � <.�� .�� ::.: _, ratio. Select berm multiplier of '��~� � �-�-� ��.�� " � � �'�� '" ' �. - . � '�Up I Width�: po�e,S?eiQ.; Rock Bed �a.t?a,��i�;�. ,:Upsl pe wdth ; �.o• 6-..��'at � d. Multiply berm multiplier by upslope mound �:'_..�� .n;;o��, v„ �dth �Q_jC:�a��P� �.,�� height to find upslope berm width: '��'' ; � . t°4�0p�`�p p ,�a�•a`:b'`:�a' � • 3,33 x 3�2 =�L feet i� � . �� . � �. . �. �. � �� . � . . S �"•.�' ?(''i1•.4:;�_�t e. Multiply rock layer width by ' �,:t : :,.�.. :`..:.��..�;;�: � � . . �"' _-. r�r�. .� . . �OWitl�OP!�d' � ' ' ' landslope to determine drop in elevation; - ab� tlon Wld`� � /D °/ 100 = ,:,r �� ,� , � � . x-� �+ . 'S feet - � .,.�'::.:,.r,i �� , ��- t l: � . : � .. �.,1.:.••?:,.r.r.�ri...1LCl�S��hf.p :.��''r� r .' f.. - � - f. Add depth of clean sand for slope roel�, ' difference (2e)at downslope edge, to the mound height at the upslope edge of rock layer(Zd) to find the downslope height; � �� + - .� ft = 3, 7 feet g. Enter table with landslope and downslope berm ratio. Select � berm multiplier of__ S DC h. MulHply berm multiplier by downslope mound height to get gE�SLOPEMU[.TIPI.IERS downslope berm width: S,00 x�__ /g feet L,oa DOWNSLOPE ��pB i. Compare the values of step G.1� � �mvtlPu«�r�.•�� berm mdtlplkrs for�arious Ia 7. berm slope ntias becro slope radas and Step G.2h /$" Select the greater of the two values as the +• downslope berm width; / feet o �.0 4.o s.o e.o �.o s.o a.o s.o b.o, �.o a.0 j. Total mound width is the sum of � �•� 4•�� s.a6 6.J8 �ss �.s� s.as aa6 s.� � e.s. �.a, upslope berm (G.2d) '- �.i9 4as s.s6 b.az a.�� zss �.�o a:s+ S.)6 b.ia b.�� width plus rock layer width (D.2) � ).30 ..sa s.as �.az 8.86 z.�s - 3.s� d.�s s.oa s.�9 �..�� plus downslope berm width(G.2i); �' 3.�i 4.76 b.0 �.s9 9.n i.�a 3.as .�.i� �.aa s..�e �.ue �.�ft +�Q_ft+ S 3.33 S�. 0�6.67 8.57 10.77 2.61� �.00 1.62 5.19 3.71 _�� _ �_feet 6 �.66 3.26 7.14 9J8 12.07 2.54 �.23 3.83 1.41 a.93 5.�1 k. T'otal mound length is the sum of upslo pe > >.so s.s6 7.69 io.3a i3.» �.�a 3.i z 3.�0 �.x� �.�o �.�z berm width (G.2d) plus rock layer length (D.3) g J.95 s.ss sa3 �i.sa �s.9� z.az s.o� 3.s� a.os a.ay �.r � plus upslope berm width (G.2d); 9 �+.ii b.:s 9.09 i�.oe is.9z 2J6 �.� �.ls 3.90 a.�o a.o� � � Et �'�_ Et +_L tt - �feet �0 a.29 6.67 10.00 I3.00 23.33 3.31 ?.86 3.33 i.75 ;.13 i».t ; II 1.1a 7.14 II.II I'7.65 30.43 2.26 2.78 J.23 ).61 3.95 1:e � t2 i.69 7.69 12.30 21.4) 43.73 IZl Z.70 3.12 3.19 3.80 1�� ! Final D im esions. :The produet of the muluplier uid the height tesulu irt the ho�zonnl disunce to wherc�he rm mau�he aisinal lond slope E.x�mple:Na¢�t u uppa edge of rock larer i�3A fee�.nxk '' q X c� (/ ayer is 10(eet wida,land dope ls 69G ud berm tlipe�atio is 4:1.Upflope benp wtdth�f J._3� l5 � .0.9.7 f�hd`ht u lowe�ed�s ot eock layer u 3.0+10 z 0.6�3.6 R and dowmlops be�n w� �5.26 x 3.6.18.9 R