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OSTP Mound Materials Worksheet UNIVERSITY <br /> Minnesota Pollution OF MINNESOTA <br /> Control Agency <br /> A.Calculate Bed (rock)Volume:Bed Length (2.C)X Bed Width (2.B)X Depth =Volume (ft3) v 11.05.31 <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 /> 1.2 0.0 1.2 ft X 10.0 ft X 63.0 ft = 724.5 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 = 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 /> (( 3.0 ft -1) X 3.O ft X 63.0 )-2= 189.0 ft3 <br /> Downslope Volume:((Downslope Height-1)x Downslope Absorption Width x Media Length)+2=cubic feet <br /> (( 3.3 ft-1) X 10.0 ft X 63.0 )+2= 724.5 ft3 <br /> Endslope 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 +Endslope Volume +Volume Under Media <br /> 189.0 ft3 + 724.5 ft3 + 69.0 ft3 + 724.5 ft3= 1707.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1707.0 ft3 a 27 = 63.2 yd3 <br /> Add 20%for constructability: 63.2 yd3 X 1.2 = 75.9 yd3 <br /> C. Calculate Sandy Berm Volume: 3.2 0.0 <br /> Total Berm Volume(approx):((Avg.Mound Height-.5 ft topsoil)x Mound Width x Mound Length)+2=cu.ft. <br /> ( 3.2 _ 0.5 )ft X 35.7 ft X 82.8 ).2= 3915.8 ft3 <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 3915.8 ft3 - 1707.0 ft3 - 630.0 ft3 = 1578.8 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1578.8 ft3 _ 27 = 58.5 yd3 <br /> Add 20%for constructability: 58.5 yd3 x 1.2 = 70.2 yd3 <br /> D. Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.5 ft <br /> 35.7 ft X 82.8 ft X 0.5 ft = 1477.6 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1477.6 ft3 : 27 = 54.7 yd3 <br /> Add 20%for constructability: 54.7 yd3 x 1.2 = 65.73 <br /> Yd <br />