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_Tara-�_,::�-i���_u_, �� __ F�.c,a <br /> G. D��vnslope �enn uVidt� <br /> ].:�'; If the landslop�is 1"'o or more, <br /> su�t�a�Ct the rock�a yer width frorn t�e absorption <br /> wy{dth to abtain miriimu�'n downslope berm tce: <br /> 2?- 10 =�7 fe�pt minimum downslo�. <br /> 2.:� Calcu�ate the rriir�i�um mound sizc: <br /> a, Deter�n�ne t�e depth of cican till at <br /> the upslope;edge af the rock layer� <br /> (require� se�rationj 3' - l_67' - 1.33 feet <br /> b. Add flic�depith of clean sand for 2�, the depth of the rock layer, <br /> and 1' for t�e tc�psdil cover needed to determine the mound h�ight <br /> at the upslppe e�ige of tt�e rock layer; <br /> 1.33 + 1'+1 = 3.�3' <br /> c. Seiect t�'►e table multiplier for the upslope <br /> berm based on �and slope against 4:1 be� slope. <br /> 2_7 � <br /> d. Multip�Iy th�be:rm multipli�r by the upslap� <br /> mound hei�ht to determin�the upsiope width; <br /> 3.33 x,2�.7=�10 feet <br /> e. Multiply th� rock layer width by th� landslo�e <br /> to det�rmine th�elevation drop; <br /> (l0 x 1�)/ I�0 =1 fe�t <br /> f. Add tl��depRh 2e ta 2b ta cietermine the <br /> tnound hei ht�t the dowt�slope edg�of the rock layer; <br /> 1 + 3.3�= 33 �'eet <br /> g. Select the t�ble multiplier for thz downsloge berm based tm <br /> the land slope �.gainst 4�1 berm slape. . <br /> 7.69 ' <br /> h. Multiply th� t�erm multiptiet for the downslope maund height <br /> to detennine the downslo� width; � nownslmp� -WW Llp��p� <br /> 4.33 x 7.69 `= 33 feet slope a�m rn�itipliers berm multipliers <br /> i. CornpaTe th�v�lues in G.l �°�^ f�r giveri ratios for given ratios <br /> (17 feet) a.nti step G.2h(20 feetj. a:� 5;1 4:t s'.i� <br /> , Seiect the gre2i�er of the two values <br /> as the dv�nslc�pe berm width; 33 feet. � a.00 s,ao a.00 s.no <br /> j_ Total�ounid width is the sum � 4,�� 3,26 3_s5 �.75 <br /> pf G.2d, D.2 aa+d G.2i; 7 q�� 5.56 3.7U 4 S4 <br /> ]d + 1Q + 3� = 53feet_ <br /> k_ Total�noa�d length is the sum 3 �.54 5•g8 3.57 a.:�S <br /> pf G.2C�,�?.3, aild G.2d ; 4 4.76 6.25 3.45 4.17 <br /> 1� + �8 � �? =b�t 5 S.QO 6.b7 3.33 4.00 <br /> 6 5.26 7.14 3.?3 3.85 <br /> 7 5.56 7.64 3.12 3.70 <br /> 8 5.88 8.33 3.03 3.57 <br /> 9 6.�5 9.09 2.94 3,45 <br /> Fin�l D�me�si�p�ts a�f the Mound 10 b.67 10.Q0 2.86 3.33 <br /> S3 feet ', � �2 f�et 11 7.14 ]1.11 2.78 3,23 <br /> TCiTHL F'.t=�4 <br />