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3. ABSORPTION AREA SIZING <br /> Note:Mound setbacks are measured from the Absorption Area. <br /> A. Calculate Absorption Width:Bed Width (2.6)X Mound Absorption Ratio (1 F)=Absorption Width <br /> 10.0 ft X 2. = 20.0 ft <br /> B. For slopes>1%, the Absorption Width is measured downhill from the upslo edge of the Bed. <br /> Calcutate Downsiope Absorption Width:Absorp[ion Width (3.A)-Bed Wid (2.6)=ft <br /> 20.0 ft - 10. ft = 10.0 ft <br /> 4. MOUND SIZING <br /> A. Calculate Clean Sand Lift: 3 feet minus Depth to Limiting Condition (1.C) Clean Sand Lift (1 ft minimum) <br /> 3.0 ft - 1.0 ft = 2.0 ft Design Sa d Lift(optional): �2.0 <br /> B. Calculate Ups(ope Height:Ctean Sand Lift (4.A)+media depth (1 ft.j+co er (1 ft.)=Upslope Height <br /> 2.0 ft + 1.0 ft + 1.0 ft= 4. ft <br /> C�-3d:Slope.Muitiplirr TaGlr <br /> Land Slope� 0 � 2 3 4 5 � b 7 g 4 10 il 12 i3 la 15 IE 11 !B I4 i0 21 12 13 24 25 <br /> � Up51pG? 13:1 ;.A; 2.91.2.33;"t;5 Y.5$�2.51�2.5: �.d8 t.4't�L3512.31 2.2h 2.21 't.l' 't.i3 L�75 L'U5 2.i�; 2.(�' I.i1 IAi t.ii !.i':i I.E9 1.&?�1.8i <br /> i E�Ilil hd:'i� �d:t a-� 3.dS13.70 3.51 3.�5 3.3i 3.23 3.it 3.Oi 2.5�!'2.E5 2.?B 2JQ 2.b1 1.55 2.J8 2.dt 2.i9 2.29 2.23 t.t6 2.13 2.Od 2.03 1.y$ 1.9i <br /> LandSlope'-� 0 i 2 3 4 5 o i ? 8 9 �0 it 12 H la i6 Ib 17 i8 t9 2� il 22 � 1i 24 25 � <br /> i ��G',%IlilO�P ;3:1 I.[A; �.Or)i.'i 3 i'"v 3.�11 :5?�3.F5 3.PL 3.ii�4.11�4.29 �.i9 �1.69 �55 5.i�1 i.SS 5$8 6.?J 6,53 ?.U� '.-II 1.7J Q,a1 i=.���`3.� '0.021 <br /> � 6�I�fil Rd;'��� �id:l d.p}4.�1 J.'s9 ;.5�i �.lb S.C9 5.26 5.56 5.88 6.25 6,57 1J�1 7.64 8.29 8,92 9.57 10.2� 10.91 ii.67 12,-2 13.14 1J,44 t�.81 t5.67 !6.5: i1.�4.i <br /> � Select Upslope Berm Multip(ier <br /> (based on land stope): 2.54 (figure D-34) <br /> D. Calculate Upslope Berm Width:Mu(tip(ier (4.C)X Upslope Mound Height 4.6)=Ups(ope Berm Width <br /> 2.54 ft X 4. ft = 10.2 ft <br /> E. Calculate Drop in Elevation Under Bed:Bed Width (2.8) X Land Slope (1. =100=Drop (ft) <br /> 10.0 ft x 6. % : �00= 0.60 ft <br /> F. Calculate Downslope Mound Height:Ups(ope Height (4.6)+Drop in Elevat n (4.E)=Downs(ope Height <br /> 4.0 ft + 0.6 ft = 4.6 ft <br /> G Select Downslope Berm Multip(ier <br /> (based on land slope): 5.26 {figure D-34) <br /> H. Calculate Downslope Berm Width:Mu(tip(ier (4.G)X Downslope Height (4 F)=Downslope Berm Width <br /> 5.26 x 4. ft = 24.2 ft <br /> I. Calculate Minimum Berm to Cover Absorption Area:Downslope Absorption Width (3.6 or 3.C)+4 ft. =ft <br /> �o.o ft + a ft = 14.o ft <br /> J. Design Downs(ope Berm =greater of 4H and 4i: 24. ft <br /> K. Setect Endslope Berm Multip(ier: 3.00 (usually 3.0 or 4. ) <br /> L. Calculate Ends(ope Berm (4.K)X Downslope Mound Height (4.F)=Ends(op Berm Width <br /> 3.00 ft X 4. ft = 13.8 ft <br /> M.Calculate Mound Width: Upslope Berm Width(4.D)+Bed Width (2.6)+Do slope Berm Width (4.J)=ft <br /> 10.2 ft + 10.0 ft + 24.2 ft = 44.4 ft <br /> N. Calculate Mound Length:Endslope Berm Width (4.L)+Bed Length (2.C)+ ndstope Berm Width (4.L)=ft <br /> 13.8 ft + 63.0 t + 13.8 ft = 90.6 ft <br /> Comments: <br /> I� � <br />