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° OSTP Mound Materials Worksheet UNIVERSITY tl: � „�. <br /> Minnesota Pollution OF MINNESOTA 1 4 <br /> Control Agency -' <br /> Project ID: v 11.09.22 <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 : 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 /> 2.2 ft x 10.0 ft X 63.0 ft = 1375.5 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 /> Ift -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 /> (( 3.8 ft -1) X 3.0 ft X 63.0 )=2= 267.8 ft3 <br /> Downslope Volume:((Downslope Height- 1)x Downslope Absorption Width x Media Length)+2=cubic feet <br /> (( 4.5 ft-1) X 10.0 ft X 63.0 )t2= 1113.0 ft3 <br /> Endslope Volume:(Downslope Mound Height-1)x 3 x Media Width =cubic feet <br /> ( 4.5 ft-1 ) X 3.0 ft X 10.0 ft = 106.0 ft3 <br /> Total Clean Sand Volume:Upslope Volume +Downslope Volume+Endslope Volume +Volume Under Media <br /> 267.8 ft3 + 1113.0 ft3 + 106.0 ft3 + 1375.5 ft3= 2862.3 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 2862.3 ft3 : 27 = 106.0 yd3 <br /> Add 20%for constructability: 106.0 yd3 X 1.2 = 127.2 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 /> ( 4.2 - 0.5 )ft X 48.0 ft x 91.0 )-2= 8044.4 ft3 <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 8044.4 ft' - 2862.3 ft3 - 630.0 ft3 = 4552.2 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 4552.2 ft3 s 27 = 168.6 yd3 <br /> Add 20%for constructability: 168.6 yd3 x 1.2 = 202.33 <br /> yd <br /> D.Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.5 ft <br /> 48.0 ft X 91.0 ft X 0.5 ft = 2184.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 2184.0 ft3 s 27 = 80.9 yd3 <br /> Add 20%for constructability: 80.9 yd3 x 1.2 = 97.1 yd3 <br />