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OSTP Mound Materials orksheet UNIVERSITY � : <br /> Minnesota Poilution OF 1�INi�tESOTA <br /> Control Agency '-�\�' <br /> ProjectlD: v 11.09.22 <br /> A• Calculate Bed (rock)Volume:Bed Length (2.0 X Bed Width 2.6)X Depth =Volu e ft' <br /> 63.0 ft x 0.0 ft x �.0 = 630.0 ft' <br /> Divide ft'by 27 ft'/yd'to calculate ubic ards: <br /> 6 0.0 ft' = 27 = 23.3 yd' <br /> Add 20%for constructability: 3.3 yd?X 1.2 = 2$,p yd' <br /> B. Calculate Clean Sand Vo(ume: <br /> Votume Under Rock 6ed:Averoqe Sand Depth x Media Width x Medio Lenqth =cu ic feet <br /> 2.4 ft X 10.0 ft X 63.0 ft = 1480,5 ft' <br /> For a Mound on a slope from 0-1% <br /> Volume from Length=((Upslope Mound Height-1)X Absorption Width Beyond Bed Media Bed Length) <br /> ft -1) X X ft = <br /> Volume from Width=((Upslope Mound Height-1)X Absorption Width Beyond Bed Media Bed Width) <br /> ft -1) X X ft = <br /> Totaf Clean Sand Volume: Volume from Length+Volume from Width+Volume Un er Media <br /> ft' + ft' + ft; = ft' <br /> For a Mound on a slope greater than 1% <br /> Upslope Volume:((Upslope Mound Height - 1)x 3 x Bed Lenqth)*2=cubic feet <br /> (( 4.0 ft -�) x 3.o ft x 63.0 )=2= 283.5 ft3 <br /> Downsfope Volume:((Downslope Height- 1) x Downslope Absorption Width x Med Length)�2=cubic feet <br /> (( 4.7 ft-�) x 10.0 ft x 63.0 )--z= 1165.5 ft' <br /> Endslope Volume:(Downslope Mound Height- 1)x 3 x Media Width =cubic feet <br /> ( 4.7 ft-1 ) X 3.0 ft X 10.0 ft = 111.0 ft' <br /> Total Ctean Sand Volume:Upslope Volume +Downs(ope Volume +fndslope Volu +Volume Urtder Media <br /> 283.5 ft' • 1165.5 ft3 + 111.0 ft' . 1480.5 ft'= 3040.5 ft' <br /> Divide ft'by 27 ft'/yd'to catculate cubic yards: 30 0.5 ft' : 27 = 112.6 yd' <br /> Add 20%for constructabitity: � 2,6 3 - 3 <br /> yd X 1.2 135.1 yd <br /> G Calculate Sandy Berm Volume: <br /> Total Berm Volume(opprox):((Avg.Mound Height-0.5 ft topsoil)x Mound Width x Mound Length)+2=cubic feet <br /> ( 4.4 _ 0.5 )ft X 45.0 ft X 91.0 )>2= 7883.6 ft' <br /> Total Mound Vo(ume-Clean Sand vo(ume-Rock Volume=cubic feet <br /> 7883.6 ft' - 3040.5 fc3 - 630.0 ft' = 4213.1 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 42 3.1 ft' : 27 = 156.0 yd3 <br /> Add 20%for constructability: 1 6.0 yd' x 1.2 = 187.2 yd3 <br /> D. Calculate Topsoil Materiol Vofume:Tota!Mound Width X Tota!Mound Length X.5 <br /> 45.0 ft X 91.0 ft x 0.5 ft = 2047J ft' <br /> Divide ft'by 27 ft'/yd'to catculate cubic yards: 20 7.7 ft� = 27 = 75,g yd3 <br /> Add 20%for constnxtability: 7 .8 yd' x 1.2 = 91.0 yd' <br />