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OSTP Mound Materials W rksheet UNIVERSITY ` y' <br /> Minnesota Pollution OF MIN�'ESOTA � �'` <br /> Control Agency ����-� <br /> ProjectlD: ���.pq,22 <br /> A. Calculate Bed (rock)Volume:Bed Length (2.0 X Bed Width (2.B)X Depth =Vo(u ft' <br /> 63.0 ft X 1 .0 ft x t.0 = 630.0 ft' <br /> Divide ft'by 27 ft'/yd3 to catculate bic ards: <br /> 63 .0 ft' : z7 = 23.3 yd' <br /> Add 20%for constructability: 2 .3 yd3 X 1.2 = 28.0 yd' <br /> B. Calculate Clean Sand Votume: <br /> Volume Under Rock bed:Average Sand Depth x Media Width x Medra Length =cub feet <br /> 2.3 ft X 10.0 ft x 63.0 ft = 1449.0 ft' <br /> For a Mound on a slope from 0-1% <br /> Volume from Length=((Upslope Mound Height-1)X Absorption Width Beyond Bed Media Bed Length) <br /> ft -1) X X ft = <br /> Volume from Width=((Upslope Mound Height-1)X Absorption Width Beyond Bed X ia Bed Width) <br /> ft -1) X X ft = <br /> Tota!C(ean Sand Volume:Volume from Length+Volume from Width+Volume Un r Media <br /> ft' + ft� + ft3 = ft3 <br /> For a Mound on a slope greater than 1% <br /> Upslope Volume:((Upslope Mound Height - 1)x 3 x Bed Length)*2=cubic feet <br /> (( 4.0 ft -1) x 3.O ft X 63.0 )T 2= 283.5 ft' <br /> Downslope Volume:((Downslope Height-1) x Downslope Absorption Width x Medi Length)*2=cubic feet <br /> (( 4.6 ft-t) x 10.0 ft x 63.0 )�2= 1134.0 ft' <br /> Endstope Vo(ume:(Downslope Mound Height- 1) x 3 x Media Width =cubic feet <br /> ( 4.6 ft-7 ) X 3.0 ft X 10.0 ft = 108.0 ft' <br /> Total Clean Sand Volume:Upslope Volume +Downs(ope Volume +Endslope Vo(um +Volume Under Media <br /> 283.5 ft' + 1134.0 ft' + 108.0 ft' + 1449.0 ft'= 2974.5 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 29 4.5 ft' : 27 = ���•2 yd' <br /> Add 20%for constructability: 11 .2 yd'X 1-2 = 132.2 yd' <br /> C. Calculate Sandy Berm Vo(ume: <br /> Total Berm Volume(approx):((Avg.Mound Height-0.5 ft topsoil)x Mound Width x und Length)+2=cubic feet <br /> ( 4.3 _ 0.5 )ft x 44.4 ft x 90.6 )*2= 7635.4 ft' <br /> Tota!Mound Volume-Clean Sand volume-Rock Volume=cu6ic feet <br /> 7635.4 ft' - 2974.5 ft' - 630.0 ft' = 4030.9 ft' <br /> Divide ft'by 27 ft3/yd'to calculate cubic yards: 40 0.9 ft' : Z7 = 149.3 yd' <br /> Add 20%for constructability: 1 9.3 yd' x 1.2 = 179.2 yd' <br /> D. Calculate Topsoil Material Vo►ume:Toto1 Mound Width X Total Mound Lenqth X.5 <br /> 44.4 ft X 90.6 ft X 0.5 ft = 2009.�ft' <br /> Divide ft'by 27 ft'/yd'to calcutate cubic yards: 20 9.3 ft' = 27 = 74.4 yd' <br /> Add 20%for constructability: 7 .4 yd' x i•z = 89•3 yd' <br />