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OSTP Mound Materials Worksheet UNIVERSITY «=,,' <br /> Minnesota Pollution OF MINNESOTA ,LN.-" <br /> Control Agency <br /> Project ID: v 06.12.13 <br /> A.Calculate Bed(rock)Volume:Bed Length (2.C)X Bed Width (2.8)X Depth =Volume (ft3) <br /> 50.0 ft X 10.0 ft X 1.0 = 500.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: <br /> 500.0 ft3 + 27 = 18.5 yd3 <br /> Add 20%for constructability: 18.5 yd3 X 1.2 = 22.2 yd' <br /> B.Calculate Clean Sand Volume: 7 <br /> Volume Under Rock bed:Average Sand Depth x Media Width x Media Length=cubic feet <br /> 1.2 ft X 10.0 ft X 50.0 ft = 575.0 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=((Upsiope 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 - ft3 <br /> For a Mound on a slope greater than 1% <br /> Upsiope Volume:((Upslope Mound Height -1)x 3 x Bed Length)+2=cubic feet <br /> (( 3.0 ft -1) X 3.0 ft X 50.0 )+2= 150.0 ft3 <br /> Downslope Volume:((Downstope Height-1)x Downslope Absorption Width x Media Length)+2=cubic feet <br /> (( 3.3 ft-1) X 10.0 ft X 50.0 )+2= 575.0 ft3 <br /> Endsiope Volume:(Downslope Mound Height-1) x 3 x Media Width =cubic feet <br /> ( 3.3 ft-1 ) X 3.0 ft X 10.0 ft = 69.0 ft3 <br /> Total Clean Sand Volume:Upslope Volume +Downslope Volume +Endsiope Volume +Volume Under Media <br /> 150.0 ft3 + 575.0 ft3 + 69.0 ft3 + 575.0 ft3= 1369.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1369.0 ft3 + 27 = 50.7 yd3 <br /> Add 20%for constructability: 50.7 yd3 X 1.2 = 60.8 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 /> ( 3.2 - 0.5 )ft X 36.0 ft X 70.0 )-2= 3337.3 ft3 <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 3337.3 ft3 - 1369.0 ft3 - 500.0 ft3 = 1468.3 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1468.3 ft3 + 27 = 54.4 yd3 <br /> Add 20%for constructability: 54.4 yd3 x 1.2 = 65.33 <br /> Yd <br /> D.Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.5 ft <br /> 36.0 ft X 70.0 ft X 0.5 ft = 1259.4 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1259.4 ft3 + 27 = 46.6 yd3 <br /> Add 20%for constructability: 46.6 yd3 x 1.2 = 56.0 yd3 <br />