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OSTP Mound Materiats Worksheet UNIVERSITY <br /> Minnesota Poliution �� -'��' <br /> OF MINNESOTA ,,�-,,_ <br /> Control Agency <br /> Projed ID: v 11.09.22 <br /> A• Calculate Bed (rock)Volume:8ed Length (2.0 X Bed Width 2.6)X Depth =Vo(ume ft' <br /> 63.0 ft X 10.0 ft X i.o = 630.0 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic ards: <br /> 630.0 ft' : z7 = 23.3 yd' <br /> Add 20%for constructability: 23.3 yd'X 1.Z = 28.0 yd' <br /> B. Calculate Ctean Sand Volume: <br /> Votume Under Rock bed:Average Sand Depth x Media Widfh x Media Length =cubic feet <br /> 2.3 ft X 10.0 ft X 63.0 ft = 1428.0 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 /> f[ -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 /> Tota!Clean Sand Volume: Volume from Length+Vo(ume from Width+Volume Under Media <br /> ft' + � ft' + ft' = ft' <br /> For a Mound on a slope greater than t% <br /> Upslope Vo(ume:((Upslope Mound Height - 1)x 3 x Bed Length)+2=cubic feet <br /> (( 3.7 ft -1) X 3.0 ft x 63.0 )t z= 252.0 ftj <br /> Downslope Volume:((Downslope Height- f) x Downslope Absorption Width x Medio Length)�2=cubic feet <br /> (( 4.9 ft-�) x 16.0 ft X 63.0 )�2= 1948.8 ft' <br /> Endslope Volume:(Downslope Mound Height- 1)x 3 x Media Width =cubic feet <br /> ( 4.9 ft-1 ) X 3.0 ft X 10.0 ft = 116.0 ft' <br /> Total Cleon Sand Volume:Upslope Volume +Downslope Volume +Endslope Valume +Volume Under Media <br /> 252.0 ft' + 1948.8 ft' + 116.0 ft' � 1428.0 ft'= 3744.8 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 3744.8 ft3 = z7 = 138.7 yd3 <br /> Add 20%for constructability: 138.7 yd'X 1.2 = 166.4 yd' <br /> C. Calculate Sandy Berm Volume: <br /> Tota!Berm Volume(approx):((Avg.Mound Height-0.5 ft topsoil)x Mound Width x Mound Length)y 2=cubic feet <br /> ( 4.3 . 0.5 )ft x 45.0 ft X 93.0 )�z= 7881.8 ft' <br /> Total Mound Vo(ume-Clean Sand volume-Rock Volume=cubic feet <br /> 7881.8 ft' - 3744.8 ft' - 630.0 ft' = 3507.0 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 3507,0 ft' : 27 = 129.9 yd' <br /> Add 20%for construc[ability: 129.9 yd' x 1-2 = 155.9 yd' <br /> D. Calculate Topsoi!Moterial Volume:Tota!Mound Width X Tota(Mound Length X.5 ft <br /> 45.0 ft x 93.0 ft x o.5 ft = 2092.5 ft' <br /> Divide ft'by 27 ft'/yd'to calculate cubic yards: 2092.5 ft3 : 27 = 77.5 yd3 <br /> Add 20%for constructabitity: 77.5 yd; x �.z = 93.0 yd3 <br />