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OSTP Mound Materials Worksheet UNIVERSITY �' <br /> Minnesota Pollution OF MINNESOTA � � <br /> Control Agency ��1;- <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 t0 = 630.0 ft3 <br /> Divide ft'by 27 ft'/yd'to calculate cubic ards: <br /> 630.0 ft' = 27 = 23.3 yd3 <br /> Add 20%for constructability: 23.3 yd'X 1.2 = 28,0 yd' <br /> B. Calculaie Clean Sond Votume: <br /> Vo(ume Under Rock bed:Average Sand Depth x Media Width x Media Length =cubic feet <br /> 1.7 ft X 10.0 ft X 63.0 ft = 1092.0 ft' <br /> For a Mound on a siope 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 {t = <br /> Volume from Width=((Upslope Mound Height-1)X Absorption Width Beyond Bed X Media Bed Width) <br /> ft -1) X X ft = <br /> Tota!Cleon$and Vo(ume: Volume from Length+Votume from Width+Volume Under Media <br /> ft3 + ft3 ' ft' = 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 /> (( 3.3 ft -�) X 3.0 ft X 63.0 )�2= 220.5 ft' <br /> Downslope Vofume:((Downslope Height-1) x Downslope Absorption Width x Media Length)=2=cubic feet <br /> (( 4.1 ft-�) x 10.0 ft X 63.0 � )�2= 987.0 ft' <br /> Endslope Volume:(Downslope Mound Height- 1) x 3 x Media Width =cubic feet <br /> ( 4.1 ft-� ) x 3.o ft x 10.0 ft = 94.0 ft' <br /> Toto(Clean Sand Volume:Upslope Vo(ume +Downslope Volume +Endslope Volume +Volume Under Media <br /> 220.5 ft' + 987.0 ft' . 94.0 ft' • 1092.0 ft'= 2393.5 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 2393.5 ft' = 27 = 88.6 yd' <br /> Add 20%for constructability: gg,6 3 = yd3 <br /> yd x i.2 10b.4 <br /> C. Calculate Sandy Berm Volume: <br /> Tota(Berm Volume(opprox):((Avg.Mound Height-0.5 ft topwil)x Mound Width x Mound Length)=2=cubic feet <br /> ( 3.7 _ 0.5 )ft x 40.0 ft x 87.0 )=z= 5626.0 ft' <br /> Totnl Mound Volume-Clean Sand vofume-Rock Volume=cubic feet <br /> 5626.0 ft' - 2393.5 ft' - 630.0 ft' = 2602.5 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 2602.5 ft' = Z7 = 96.4 yd' <br /> Add 20%for constructability: 96.4 yd' x �.2 = 115.7 yd' <br /> D. Calculate Topsoi(Moterial Volume:Total Mound Width X Tota!Mound Lenqth X.5 ft <br /> 40.0 ft X 87.0 ft X 0.5 ft = 1740.0 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 1740.0 ft' : 27 = 64.4 yd' <br /> Add 20%for constructability: 64.4 yd' x 1.2 = 77.3 3 <br /> yd <br />