1998-011066 - septic - Laserfiche WebLink

Home Browse Search

G. DOWNSLOPE BERM WIDTH �'°��- �, �°"�`1' 1. If landslope is 1% or more, subtract rock layer width from adsorption width ` ��- =Aq -�'` �i , xo�x r � h to obtain minimum downslope berm toe c�,s.,,a ' -�o ft -1 U ft = �feet ahual Sal � 6:r��u 2. Calculate Minimum mound Size a. Determine depth of clean sand fill at u��wam ��W►�� upslope edge of rock layer: �w�� A�tio„wd�, Separation 3' - � `� ft = / ? 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; � ft+ lft + lft = 3 � 3 feet �� c. Enter table with landslope and upslope berm , upsio�w�acn . � ratio. Select berm multiplier of 3 y� : d. Multi 1 berm multi lier b u slo e mound `�uP�'''�d�' �°��'-=�;�'{ R°`�`�o 'Q':�:bo"�; ':Upslope Width P Y P Y P P �� b..�� d�, � ?Q.��a��,� �_ height to find upslope berm width: � a;°Q`�:°'�;:� ��°'�;"va;�; . s 2 � X � � ; _ � i feet � l ��: �_ r � e. Multiply rock layer width by � ` � : , landslope to determine drop in elevation; �° ; " ° �o�wld�, 1� ` " � x �� %+ 100 = � �� feet ,��n w�a�,�_ . _ _ :.,: f. Add depth of clean sand for slope � � �` To��n�� difference (2e)at downslope edge, to the mound height at the upslope edge of rock layer (2b) to find the downslope height; 3� � ft + � ft = ��feet g. Enter table with landslope and downslope berm ratio. Select berm multiplier of y�� h. Multiply berm multiplier by downslope mound height to get downslope berm width: � �� x '-' �� - /� feet B�si.orE Mvc.�.�xxs i. Compare the values of step G.1 /� and Step G.2h�_ LiOd ��r�� n��r� Select the greater of the two values as the +�� n«m�� downslope berm width; / 7 feet j. Total mound width is the sum of � � s� � � � °� 5� � ': � upslope berm (G.2d) 0 3.o a.o s.o b.o �.o s.o a.o s.o 6.0 �.o s.o 1 3.09 4.17 5.26 6.38 7.53 2.91 3.85 4.76 5.66 6.54 7.4I width plus rock layer width (D.2) 2 3.19 a.3s s.sb b.sz s.ia Z.s3 3.�o a.sa 5.36 6.ia 6.90 plus downslope berm width(G.21�; 3 3.30 4.54 5.88 7.32 8.86 2.75 3.57 4.35 5.08 5.79 6.45 ,�_ft +�L ft+ �ft= �feet a 3.ai a.� 6.0 �.s9 9.�z z.ba .as a.i� a.sa s.ab b.ob �C. Total mound length is the sum of upslope s 3.53 5.00 6.67 8.57 10.17 2.61 3.33 4.00 4.62 S.19 5.7t berm width (G.2d)plus rock layer length(D.3) 6 3.66 s.� �.ia 9.38 �z.m z.sa s.z� 3.ss a.a� 4.93 s.ai plus upslope berm width (G.2d); � 3.so s.s6 �.� �o.�a 13.73 z.aa 3.�i s.�o a.2s a.�o s.�s t�°� �� ft + !;3 ft + �ft= �s feet 8 3.95 s.ss 8.33 �i.sa is.9i z.az s.o3 ss� a.os a.a9 a.sa ��,�� -S �3 /S � 3 9 4.1 I 6.25 9.09 I3.04 18.92 2.36 2.94 3.45 3.90 a.30 4.65 10 4.29 6.67 10.00 IS.00 23.33 231 2.86 333 3.75 a.12 4.44 Final Dimensions. �1 4.48 7.14 ll.li 17.65 30.43 2.26 2.78 3.23 3.61 3.95 4.26 12 4.69 7.69 12.30 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4.08 ,., ��. �( N� ,�.