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4 OSTP Mound Materials Worksheet UNIVERSITY A <br /> Minnesota Pollution OF MINNESOTA (.14M, <br /> Control Agency _ <br /> Project ID: v 12.08.06 <br /> A.Calculate Bed(rock)Volume:Bed Length (2.0 X Bed Width 2.B)X Depth =Volume (ft3) <br /> 63.0 ft X 10.0 ft X 1.0 = 630.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: <br /> 630.0 ft3 = 27 = 23.3 yd3 <br /> Add 20%for constructability: 23.3 yd3 X 1.2 = 28.0 yd3 <br /> B. Calculate Clean Sand Volume: <br /> Volume Under Rock bed:Average Sand Depth x Media Width x Media Length =cubic feet <br /> 1.7 ft X 10.0 ft X 63.0 ft = 1060.5 ft3 <br /> For a Mound on a slope from 0-1% <br /> Volume from Length=((Upslope Mound Height-1)X Absorption Width Beyond Bed X Media Bed Length) <br /> ft -1) X X ft = <br /> Volume from Width=((Upslope Mound Height-1)X Absorption Width Beyond Bed X Media Bed Width) <br /> ft -1) X X ft = <br /> Total Clean Sand Volume:Volume from Length+Volume from Width+Volume Under Media <br /> ft3 + ft3 + ft3 = ft' <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 /> (( 3.3 ft -1) X 3.0 ft X 63.0 )+2= 220.5 ft3 <br /> Downslope Volume:((Downslope Height- 1)x Downslope Absorption Width x Media Length)+2=cubic feet <br /> (( 4.0 ft-1) X 10.0 ft X 63.0 )+2- 955.5 ft3 <br /> Endslope Volume:(Downslope Mound Height- 1) x 3 x Media Width =cubic feet <br /> ( 4.0 ft-1 ) X 3.0 ft X 10.0 ft = 91.0 ft3 <br /> Total Clean Sand Volume:Upslope Volume +Downslope Volume +Endslope Volume +Volume Under Media <br /> 220.5 ft3 + 955.5 ft3 + 91.0 ft3 + 1060.5 ft3= 2327.5ft 3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 2327.5 ft3 : 27 = 86.2 yd3 <br /> Add 20%for constructability: 86.2 yd3 X 1.2 = 103.4 yd3 <br /> C. Calculate Sandy Berm Volume: <br /> Total Berm Volume(approx):((Avg.Mound Height-0.5 ft topsoil)x Mound Width x Mound Length)+2=cubic feet <br /> ( 3.7 0.5 )ft X 46.0 ft X 87.0 )+2= 6369.9 ft3 <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 6369.9 ft3 - 2327.5 ft3 - 630.0 ft3 = 3412.4 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 3412.4 ft3 - 27 = 126.4 yd3 <br /> Add 20%for constructability: 126.4 yd3 x 1.2 = 151.7 yd3 <br /> D.Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.5 ft <br /> 46.0 ft X 87.0 ft X 0.5 ft = 2001.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 2001.0 ft3 ; 27 = 74.1 yd3 <br /> Add 20%for constructability: 74.1 yd3 x 1.2 = 88.9 yd3 <br />