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OSTP Mound Materials Worksheet UNIVERSITYSt' <br /> Minnesota Pollution OF MINNESOTA <br /> Control Agency <br /> Project ID: v 07.14.15 <br /> A. Calculate Bed (rock)Volume:Bed Length (2.C)X Bed Width (2.B)X Depth =Volume (ft3) <br /> 50.0 ft X 10.0 ft X 0.8 = 400.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: <br /> 400.0 ft3 + 27 = 14.8 yd3 <br /> Add 20%for constructability: 14.8 yd3 X 1.2 = 17.8 yd3 <br /> B. Calculate Clean Sand Volume: <br /> Volume Under Rock bed:Average Sand Depth x Media Width x Media Length =cubic feet <br /> 1.9 ft X 10.0 ft X 50.0 ft = 950.0 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 /> (( 3.3 ft -1) X 3.0 ft X 50.0 )+2= 168.8 ft3 <br /> Downslope Volume: ((Downslope Height- 1) x Downslope Absorption Width x Media Length)+2=cubic feet <br /> (( 4.2 ft-1) X 16.0 ft X 50.0 )+2= 1260.0 ft3 <br /> Endslope Volume:(Downslope Mound Height- 1) x 3 x Media Width =cubic feet <br /> ( 4.2 ft-1 ) X 3.0 ft X 10.0 ft = 94.5 ft3 <br /> Total Clean Sand Volume:Upslope Volume +Downslope Volume +Endslope Volume +Volume Under Media <br /> 168.8 ft3 + 1260.0 ft3 + 94.5 ft3 + 950.0 ft3= 2473.3 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 2473.3 ft3 + 27 = 91.6 yd3 <br /> Add 20%for constructability: 91.6 yd3 X 1.2 = 109.9 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 /> ( 3.7 0.5 )ft X 42.0 ft X 76.0 )+2= 5107.2 ft3 <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 5107.2 ft3 - 2473.3 ft3 - 400.0 ft3 = 2234.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 2234.0 ft3 + 27 82.7 yd3 <br /> Add 20%for constructability: 82.7 yd3 x 1.2 = 99.33 <br /> yd <br /> D. Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.5 ft <br /> 42.0 Ift X 76.0 ft X 0.5 ft = 1596.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1596.0 ft3 + 27 = 59.1 yd3 <br /> Add 20%for constructability: 59.1 yd3 x 1.2 = 70.93 <br /> yd <br />