Laserfiche WebLink
3• ABSORPTION AREA SIZING <br /> Note:Mound setbacks are meawred from the Absorption Area. <br /> A. Calcutate Absorption Width:Bed Width (2.6)X Marnd Absorpiion Ratio (t.F)=AbsorpHon 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 DoNd�slq�e Absorption Width:Absorption Width (3.A)-Bed Width (2.6)=ft <br /> 20.0 ft - 10.0 ft = 10.0 ft <br /> 4. MOUND SIZING� <br /> A. Calculate Cleqil5and Lift: 3 feet minus Depth to Limiting Condit�on (1.C)=Clean Sand Lift (1 ft minimum) <br /> 3.0 ft - 2.3 ft = 1.0 ft Design Sand Lift(optional): �� � <br /> B. Calculate Upslope Height:Clean Sand Lift (4.A)+media depth (1 ft.)+cover (1 ft.)=Upslope Height <br /> 1.0 ft + 1.0 ft + 1.0 ft= 3.0 ft <br /> D•34:Slope Mul!ipli�r Table <br /> Und Slope� 0 t 1 3 4 5 6 7 8 9 t0 t i I2 t3 I4 i5 16 v Id 19 t0 21 22 23 24 25 <br /> Up51op2 3:t 3.Ih1 2.91 2.83 1.75 1.68 2.6t 2.5d 2,�18 2.d2 2.36 2.31 216 2.21 2.17 2.t]2.04 I.Q6 2.Oi 2.00 1.91 1.9i 1.43 1.9s 1.89 1.81 1.85 <br /> Berm RatiO �:t d.00 3,$� 3.70 3.57 3A5 3.33 3.23 3J2 3,03 2.9�2.86 2.Id 2.m 1.62 2.55 2.�8 2.dt 2.35 2.29 1.23 2.15 2.13 2.� 2A3 1.98 1.93 <br /> land Sfope A a r t 3 4 5 6 7 S 9 i0 1I 12 t 3 14 15 Ib 11 i8 19 20 II t2 23 24 15 <br /> DG�:m51opP 3:1 3.OG 3.09,i.;9 3.I4 3.�t1 3.53 3.C�b 3.EC 3.95 dJt 4.29 J.48 d.69 a.95 514 5.55 5.86 6.2J 6.63 LW 7.d1 1.41 8.J2 8.93 9.� t0.02 <br /> Bwm Ratio �t:� a.00 a.st�a35 4.54 dJ6 5.�0 5.I6 5.56 5.d6 b.IS 6.61 l.id 7.69 8.29 8,92 9.51 iQ.2d 10.4d 11.67 tl.a2 13.19 t3.99 14.82 15.63 16.54 17,�41 <br /> Select Upslope Berm Multiplier <br /> �' (based on land slope): 3.45 (figure D-34) <br /> D. Calcutate Ups(ape$erm Width:Multiplier (4.C)X U�lope Maind Height (4.6)=Upslope Berm Width <br /> 3.45 ft X 3.0 ft = 10.0 ft <br /> E. Calculate Drop in flevation Under Bed:Bed Width (2.6) X Land Slope (1.D):100=Orop (ft) <br /> 10.0 ft x 4.0 % s t0o= 0.40 ft <br /> F. Calculate Downslope Mamd Height:Upslope Height (4.6)+Drop in Elevation (4.E)=Downslope Height <br /> 3.0 ft + 0.40 ft = 3.4 ft <br /> Setect Downslope Berm Muttiptier <br /> G' (based on tand slope): 4.76 (figure D-34) <br /> H. Catculate Downslope Berm�dth:Muttiplier (4.G)X Downslope Heiqht (4.F)=Downs(ope Berm Width <br /> 4.76 x 3.4 ft = 16.0 ft <br /> I. Catculate Minimum Berm to tover Absorption Area:Downslope Absor�tion Width (3.6 or 3.C)+4 ft.=ft <br /> 10.0 ft + � ft = 14.0 ft <br /> J. Design Downslope Berm =greater of 4H and 41: 16.0 ft <br /> K. Select Endstope Berm Mu(tiplier: 3.00 (�alty 3.0 or 4.0) <br /> L. Calculate Endslope Berm (4.K)X Downslope Maund Heignt (4.F)=Endslope Berm Width <br /> 3.00 ft x 3.4 ft = 10.0 ft <br /> M.Calcutate Mound Width:Ups(ope Berm Width(4.D)+Bed Width (2.6)+powns(ope Berm Width (4.J)=ft <br /> 10.0 ft + 10.0 ft + 16.0 ft = 36.0 ft <br /> N. Calcutate Maind Length:Fndslope Berm�dth (4.L)+8ed Ler►gth (2.C)+Endslope Berm�dth (4.L)=ft <br /> 10.0 ft + 63.0 ft + 10.0 ft = 83.0 ft <br /> Comments: <br />