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OSTP Mound Materials Worksheet UNIVERSITY � <br /> Minnesota Pollution OF MINNESOTA �` ,�,�� <br /> Control Agency - <br /> Project ID: ��� O9 Zz <br /> A• Calculate Bed (rock)Votume:Bed Length (2.C)X Bed Width 2.6)X Depth =Vo(ume ft') <br /> 63.0 ft x 10.0 ft X �.0 = 630.0 ft3 <br /> Divide ft'by 27 ft'/yd'to catculate cubic ards: <br /> 630.0 ft' : 27 = 23.3 yd' <br /> Add 20%for constructability: 23.3 yd3 X 1.2 = 28.0 yd' <br /> B. Calculate C(ean Sand Vo(ume: <br /> Volume Under Rock bed:Averaqe Sand Depth x Media Width x Media Length =cubic feet <br /> 2.1 ft x 10.0 fc X 63.0 ft = 1323.0 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 X ft = <br /> Votume from Width=((Upslope Mound Height-1)X Absorption Width Beyond Bed X Media Bed Width) <br /> ft -1) X X ft = <br /> Totol Clean Sand Volume:Volume from Length+Volume from Width+Vo(ume Under Media <br /> ft' + ft' + ft3 = ft' <br /> For a Mound on a slope greater than 1% <br /> Upslope Volume:((Upslope Mound Heiqht - 1)x 3 x Bed Length)T 2=cubic feet <br /> (( 3.5 ft -�) x 3.o ft x 63.0 )T z= 236.3 ft' <br /> Downslope Volume:((Downslope Height-1) x Downslope Absorption Width x Media Length)*2=cubic feet <br /> (( 4.7 ft-�) x 16.0 ft x 63.0 )�-z= 1864.8 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 /> Toto[Clean Sand Volume:Upslope Volume +Downslope Volume +Endslope Volume +Volume Under Media <br /> 236.3 ft' + 1864.8 ft' + 111.0 ft3 + 1323.0 ft'= 3535.1 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calcutate cubic yards: 3535.1 ft' = 27 = 130.9 yd' <br /> Add 20%for constructabitity: 130.9 yd3 X 1.2 = 157.1 yd' <br /> C. Calculate Sondy Berm Volume: <br /> Total Berm Volume(approx):((Avg.Mound Height-0.5 ft topsoil)x Mound Width x Mound Length)+2=cubic feet <br /> � 4.1 _ 0.5 )ft x 45.0 ft X 93.0 )=z= 7533.7 ft' <br /> Tota!Mound Volume-C(ean Sand volume-Rock Volume=cubic feet <br /> 7533J ft3 - 3535.1 ft' - 630.0 ft' = 3368.6 ft' <br /> Divide ft'by 27 ft'/yd'to calcutate cubic yards: 3368.6 ft' = 27 = 124.8 yd; <br /> Add 20%for constructability: 124.8 yd' x 1-2 = 149.7 yd' <br /> D. Calculate Topsoi!Material Vo(ume:Total Mound Width X Total Mound Length X.5 ft <br /> 45.0 ft x 93.0 ft X o.5 ft = 2092.7 ft' <br /> Divide ft3 by 27 ft'/yd3 to calculate cubic yards: 2092.7 ft' : 27 = 77•5 yd' <br /> Add ZO%for constructability_ 77.5 yd' x 1.2 = 93.0 yd' <br />