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OSTP Mound Materials Worksheet UNIVERSITY - <br /> Minnesota <br /> Co t of Agency Pollution OF MINNESOTA ``+ . „�1;, <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 ft'/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 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 /> ft' + 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 /> (( 3.0 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 /> (( 3.3 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= 1707.03 <br /> ft <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1707.0 ft3 : 27 = 63.2 yd3 <br /> Add 20%for constructability: 63.2 <br /> yd3 X 1.2 = 75.9 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 83.0 )+2= 3957.1 ft3 <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 3957.1 ft3 - 1707.0 ft3 - 630.0 ft3 = 1620.1 ft3 <br /> Divide ft3 by Z7 ft3/yd3 to calculate cubic yards: 1620.1 ft3 27 = 60.0 yd3 <br /> Add 20%for constructability: 60.0 yd3 x 1.2 = 72.0 yd3 <br /> D. Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.5 ft <br /> 36.0 ft X 83.0 ft X 0.5 ft = 1493.3 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1493.3 ft3 e 27 = 55.3 yd3 <br /> Add 20%for constructability: 55.3 yd3 x 1.2 66.4 yd3 <br />