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OSTP Mound Materials Worksheet UNIVERSITY <br /> Minnesota Pollution ;;a• <br /> Control Agency <br /> OF MINNESOTA <br /> •- ' ti-'1..\. <br /> Project 11): v 11.09.22 <br /> A. Calculate Bed (rock)Volume:Bed Length (2.Cj X Bed Width 2.B)X Depthffg�� <br /> 63.0 ft xft X 1.0 = 630.0 ft3 <br /> Divide ft'by 27 ft;/yd'to calculate cubicyards: <br /> 630,0 ft' 27 = 23.3 yd <br /> Add 20%for constructability: 23.3 yd'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 x63.0 Ift = 1281.0 ft' <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 I � X �-�ft <br /> Volume from Width=((Upslope Mound Height-1)X Absorption Width Beyond Bed X Media Bed Width) <br /> ft 1) X E_ I X ft = �� <br /> Total Clean Sand Volume: Volume from Length+Volume from Width+Volume Under Media <br /> ft' + ft' + 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 /> it -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:(Downslope Mound Height-1)x 3 x Media Width =cubic feet <br /> ( 4.2 ft-I ) X 3.0 ft X 10.0 ft = 97.0 ft' <br /> Total Clean Sand Volume:Upslope Volume +Downslope Volume +Endslope Volume +Volume Under Media <br /> 267.8 ft' + 1018.5 ft' + 97.0 ft' + 1281.0 ft'= 2664.3 ft' <br /> Divide ft'by 27 ft/yd 3 to calculate cubic yards: 2664.3 ft' 27 = 98.7 yd' <br /> Add 20%for constructability: 98.7 yd'X 1.2 = 118.4 yd' <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 /> ( 4.0 0.5 )ft x 43.0 ft x 89.0 )+2= 6761.0 ft' <br /> Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet <br /> 6761.0 ft' 2664.3 ft' - 630.0 ft' 3466.8 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 3466.8 ft' + 27 - 12$,4 yd' <br /> Add 20%for constructability: 128.4 yd' x 1.2 = 154.1 yd <br /> D. Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.5 ft <br /> 43.0 ft X 89.0 ft X 0.5 ft = 1913.5 ft3 <br /> Divide ft3 by 27 ft'/yd'to calculate cubic yards: 1913.5 ft' + 27 70.9 yd' <br /> Add 20%for constructability: 70.9 = <br /> yd' x 1.2 85.0 yd3 <br />