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. ' 3. ABSORPTION AREA SIZING <br /> Note:Mou�setbacks ore meawred from the A6sorpKon Area. <br /> A. Calculate Absorption HHdth:8ed Wfdth (2.6)X Mound Absorption Ratio (t.F)=Abwrption Width <br /> 10.0 ft X 2.0 = 20.0 ft <br /> B. For slopes>1%,the Absorption Width is meawred downhill from the upslope edge of the Bed. <br /> Calculate Downslope Abso►ptlon Width:Absorption Width (3.A)-8ed Width (2.B)=ft <br /> 20.0 ft - 10.0 ft = 10.0 ft <br /> 4. MOUND SIZING <br /> A. Calculate Cleun Sand Lift: 3 feet minus Depth to Limiting Condition (1.C)=Cleon Sand Lift (1 ft minimum) <br /> 3.0 ft - 1.7 ft = 1.3 ft Design Sand Lfft(optional): ��,3 <br /> B. Calculate Upslope Height:Clean Sand Lift (4.A)+�dia depth (1 ft.)+cover (t ft.)=Upslope Height <br /> 1.3 ft + 1.0 ft + 1.0 ft= 3.3 ft <br /> U•34:Sbpt Muftipiier TaQle <br /> Land Siope� Q 1 2 3 4 5 b T 8 4 10 11 12 13 14 t5' Ib 17 I8 19 10 tt 12 23 24 25 <br /> Upslo�le 3:1 3.UG 2.91 2.63 2.T5 2.h6 I.bt t.54 2.J8 2A2 236 231 2.Zb 2.tt 2.iT 2.13 2.C9 1.06 2.03 t.W 1.91 1.4i 1.43 t.9t t.84 t.&7 1.85 <br /> B?mt Ratio d:t a.W 3.85 3.70 3,5T 3.d5 3.33 323 3.12 3.93 2,9d 2,86 2.18 2,70 2.62 2.55 1.�8 2At L35 I.29 2,23 2.i8 2.13 2,Oi 2.03 1,9& 1.43 <br /> Land Slope b Q I 2 3 4 5 b 7 8 9 10 ll 12 13 I4 IS !6 17 18 19 20 21 II I3 24 25 <br /> G01•41510pP 3:1 I.�' 3.09 3.19 3.30 3.Jt 3.53 3.E� 3.8t! 3.95�.1{ a24 d.JB d.64 d.95 5.ta 5.55 5.88 5.23 b.63 1.W 7.4) 1.43 8.d2 8.9� 9.a6 10.02 <br /> BamRatio a:1 a.00 a.r7 a.35 3.5�J.76 5.D0 5.26 5.56 i.68 6.15 6,61 J.1a 7.69 B.29 8.92 9.57 t0.2a ID.9a n.67 11.a2 t3.19 i1.99 t�.82 �5.67 �6.5a 17,a� <br /> �. Select Upslope Berm Mu(tiplier <br /> (based on tand stope): 3.33 (figure D-34) <br /> D. Calculate llpslope Berm Wfdth:Multiplier (4.C)X Upslope Mound Height (4.6)=Upslope Berm Width <br /> 3.33 ft x 3.3 ft = 11.0 ft <br /> E. Calculate Drop in Elevntion Under Bed:Bed Width (2.6) X Lar►d Slope (1.D)=100=Dr� (ft) <br /> 10.0 h x 5.0 % + 100= 0.50 ft <br /> F. Catculate Downslope Mound Height:Upslope Height (4.6)+Orop in Elevation (4.E)=Downs(ope Hefght <br /> 3.3 ft + 0.50 ft = 3.8 ft <br /> G.Select Downslope Berm Multiplier <br /> (based on land slope): 5.00 {figure D-34) <br /> H.Calcutate Downslope Berm Width:Multiplier (4.G)X Dnwns(ope Neiqht (4.F)=Qownslope Berm Widtb <br /> 5.00 x 3.8 ft = 19.0 ft <br /> I. Calculate Minimum Berm to Crn�er Absorption Area:Dnwnslope Absorptfon Width (3.B or 3.C)+4 ft.=ft <br /> 10.0 ft + � ft = 14.0 ft <br /> J. Design Downstope Berm =greater of 4H and 41: 19.0 ft <br /> K. Select Ends(ope Berm Multiplier: 3.00 (usually 3.0 or 4.0) <br /> L. Caicutate Endsl�e Berm (4.K)X Downslope Mound Height (4.F)=Endslope Berm Width <br /> 3.00 ft x 3.8 ft = 12.0 ft <br /> M.Catculate Mound Width:Upslope Berm Width(4.D)+Bed Widtb (2.6)+DoNmslope Berm Width (4.J)=ft <br /> 11.0 ft + 10.0 ft + 19.0 ft = 40.0 ft <br /> N. Catculate Mound Length:Endslope Berm Wfdth (4.L)+Bed Ler►gth (2.C)+Er►dslope Berm Width (4.L)=ft <br /> 12.0 ft + 38.0 ft + 12.0 ft = 62.0 ft <br /> Comments: <br />