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OSTP Mound Materials Worksheet uNI�ERSITY \ <br /> Minnesota Pollution OF MINNESOTA �^ '�"""' <br /> Controi Agency l�-�-� <br /> ProjectlD: v 11.09.22 <br /> A• Calculate Bed (rock)Volume:Bed Length (2.0 X Bed Width 2.B)X Depth =Volume (ft') <br /> 63.0 ft x 10.0 ft x �.o = 630.0 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic ards: <br /> 630.0 ft' : z7 = 23.3 yd3 <br /> Add 20%for constructability: 23.3 yd'X 1.2 = 28.0 yd3 <br /> B. Calculate Clean Sond Vo(ume: <br /> Volume Under Rock bed:Average Sand Depth x Medio Width x Media Length =cubic feet <br /> 1.8 ft x 10.0 ft x 63.0 ft = 1113.0 ft' <br /> For a Mound on a slope from 0-1% <br /> Volume from Length=((Upslope Mound Height-t)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 Vo(ume: Vo(ume from Length+Vo(ume from Width+Vofume Under Medio <br /> ft3 + ft3 + �� ft3 - ft3 <br /> For a Mound on a slope greater than 1% <br /> Upslope Vo(ume:((Upslope Mound Height - 1)x 3 x Bed Length)=2=cubic feet <br /> (( 3.2 ft -�) x 3.o ft x 63.0 )=2= 204.8 ft' <br /> Downslope Volume:((Downsfope Heisht- i) x Downslope Absorption Width x Media Length)=2=cubic feet <br /> (( 4.4 ft-1) x 10.�ft X 63.0 )=2= 1060.5 ft' <br /> Endslope Volume:(Downs(ope Mound Height- 1) x 3 x Media Width =cubic feet <br /> ( 4.4 ft-1 ) x 3.o ft x 10.0 ft = 101.0 ft' <br /> Tota!Clean Sand Volume:Ups(ope Volume +Downslope Volume +Endslope Volume +Vo(ume Under Media <br /> 204.8 ft' + 1060.5 ft' • 101.0 ft3 . 1113.0 ft'= 2479.3 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 2479.3 ft' : 27 = 91.8 yd' <br /> Add 20%for constructability: 91.8 yd'X 1.2 = 110.2 yd3 <br /> C. Calculate Sondy Berm Volume: <br /> Tota!Berm Volume(approx):((Avg.Mound Height-0.5 ft topsoil)x Mound Width x Mound Length)*2=cubic feet <br /> ( 3.8 _ 0.5 )ft x 38.0 ft x 89.0 )=z= 5523.7 ft' <br /> Total Mound Vo(ume-Clean Sand volume-Rock Volume=cubic feet <br /> 5523.7 ft' - 2479.3 ft' - 630.0 ft' = 2414.4 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 2414.4 fc' : 27 = $9,4 yd' <br /> Add 20%for constructabitity: 89.4 yd' x 1_2 = 107.3 yd' <br /> D. Calculate Topsoi(Moterial Volume:Total Mound Width X Total Mound Length X.5 ft <br /> 38.0 ft X 89.0 ft x o.5 ft = 1690.9 ft' <br /> Divide ft'by 27 ft'tyd3 to calculate cubic yards: 1690.9 ft' : 27 = 62.6 yd' <br /> Add 20%for construdability: 62.6 yd' x 1.2 = 75,2 yd' <br />