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OSTP Mound Materials Worksheet UNIVERSITY - ' <br /> Minnesota Pollution OF MINNESOTA <br /> Control Agency •NN--_-,- <br /> Project ID: v 06.12.13 <br /> A. Calculate Bed (rock)Volume:Bed Length (2.C)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 s 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 /> 1.3 ft X 10.0 ft X 63.0 ft = 819.0 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=((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 3.0 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 /> (( 3.6 ft-1) X 16.0 ft X 63.0 )+2= 1310.4 ft3 <br /> Endslope Volume:(Downslope Mound Height- 1)x 3 x Media Width =cubic feet <br /> ( 3.6 ft-1 ) X 3.0 ft X 10.0 ft = 78.0 ft3 <br /> Total Clean Sand Volume:Upslope Volume +Downslope Volume +Endslope Volume +Volume Under Media <br /> 189.0 ft3 + 1310.4 ft3 + 78.0 ft3 + 819.0 ft3= 2396.4 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 2396.4 ft3 : 27 = 88.8 yd3 <br /> Add 20%for constructability: 88.8 yd3 X 1.2 = 106.5 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 /> ( 3.3 - 0.5 )ft X 41.6 ft X 84.6 )+2= 4921.2 ft3 <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 4921.2 ft3 - 2396.4 ft3 - 630.0 ft3 = 1894.8 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1894.8 ft3 s 27 = 70.2 yd3 <br /> Add 20%for constructability: 70.2 yd3 x 1.2 = 84.2 yd3 <br /> D.Calculate Topsoil Material Volume: Total Mound Width X Total Mound Length X.5 ft <br /> 41.6 ft X 84.6 ft X 0.5 ft = 1757.6 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1757.6 ft3 27 = 65.1 yd3 <br /> Add 20%for constructability: 65.1 yd3 x 1.2 = 78.1 yd3 <br />