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OSTP Mound Materials Worksheet UNIVERSITY <br /> Minnesota Pollution OF MINNESOTA <br /> Control Agency <br /> Project ID: v 11.09.22 <br /> A.Calculate Bed(rock)Volume:Bed Length(2.0)X Bed Width 2.6)X Depth -Volume ft3 <br /> 63.0 Ift X 10.0 ft X 1.0 = 630.0 ft3 <br /> Divide ft3 by 27 ft;/yd3 to calculate cubic rds: <br /> 630.0 ft' _. 27 = 23.3 yd3 <br /> Add 20%for constructability: 23,3 yd3 X 1.2 28.0 yd' <br /> B. Calculate Clean Sand Volume: <br /> Volume Under Rock bed:Average Sand Depth x Media Width x Media Length-cubic feet <br /> 2.0 ft X 10.0 ft x 63.0 ft = 1281.0 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 /> II ft -1) X X �_�ft = �� <br /> Volume from Width-((Upslope Mound Height-1)X Absorption Width Beyond Bed X'Me-dia Bed Width) (�7 <br /> ft -1) X �� X L-�ft = <br /> Total Clean Sand Volume:Volume from Length+Volume from Width+Volume Under Media <br /> I___i fe + =� ft3 + � ft' = C�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 /> (( 3.8 ft -1) X 3.0 ft X 63.0 ) 2= 267,8 ft' <br /> Downslope Volume:((Downslope Height-1)x Downslope Absorption Width x Media Length)+2=cubic feet <br /> ft-1) x 10.0 ft x 63.0 )+2= 1018.5 ft' <br /> Endslope Volume:(Downs( a Mound Height-1)x 3 x Media Width=cubic feet <br /> ( 4.2 ft-1) X 3.0 ft X 10.0 ft - F 97.0 ft3 <br /> Total Clean Sand Volume:Upslope Volume+Downslope Volume+Endslope Volume+Volume Under Media <br /> 267.8 1 ft' + 1018.5 ft3 + 97.0 ft3 + 1281.0 ft3= 2664.3 ft' <br /> Divide ft3 by 27 ft'/yd3 to calculate cubic yards: 2664.3 ft3 + 27 = 98.7 yd3 <br /> Add 20%for constructability: 98.7 yd3 X 1.2 = 118.4 yd' <br /> C.Calculate Sandy Berm Volume: <br /> Total Berm Volume(a proxy:((Avg.Mound Height-0.5 ft topsoil)x Mound Width x Mound Length)+2=cubic feet <br /> ( 4.0 o.s )ft X 43.0 ft x 89.0 )+2= 6761.0 ft3 <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 6761.0 ft3 - 2664.3 ft3 - 630.0 ft3 = 3466.8 ft3 <br /> Divide ft'by 27 ft'/yd3 to calculate cubic yards: 3466.8 ft3 = 27 = 128.4 yd3 <br /> Add 20%for constructabitity: 128.4 yd3 x 1.2 = 154.1 yd' <br /> D.Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.S ft <br /> 43.0 ft X 89.0 ft x 0.5 ft = 1913.5 fC3 <br /> Divide ft'by 27 ft3/yd3 to calculate cubic yards: 1913.5 ft3 + 27 70.9 yd3 <br /> Add 20%for constructability: 70.9 yd3 x 1.2 = 85.0 yd3 <br />