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' 7, APPROXIMATE MOUND MATERiAt CALCULATIONS: <br /> A. Calcutate Bed (rock) Volume: Bed Length (2.Cj X Bed IMdth (2.Bj X Depth =Volume (ft�) <br /> :50.0 ft X 10A ft X 1.0 = 500.0' n3 <br /> Divide ft3 by 27 ft3/yd3 to calcutate cubic yards: <br /> 5Q0.0 ft3 t 27 = 18.5 yd3 <br /> Add 20%for constn�ctabitity: 18.5 ; yd;X 1.2 = 22.2�yd3 <br /> B. Calculate Clean Sond Vatume: <br /> Upslope Volume: ((Upslope Mamd Height - 1)x 3 x Bed Length)+2=cubic feet <br /> (( 3•5 ft - 1) X 3.Q ft X 50.0 )+2= 18T.5 ft3 <br /> Downslope Volume: ((Downstope Height- t) x Downslope Absorption Width x Media Length)+2=cubic feet <br /> (( 4.3 ft- 1) X 10.0 ft X 50A )�-2= 825.0 ft3 <br /> Endstope Volume: (Downs(ope Mound Height- 1) x 3 x Medio N�idth =cubic feet <br /> ( �.�ft- 1 ) X 3.0 ft X 10.0 , ft = 99.�ft3 <br /> Votume Under Rockbed:Average Sand Depth x Med3u �dth x Media Length a cubic feet <br /> 1.9 ft X 10.0 ft X 50.0- ft = 950A 'ft3 <br /> Total Clean Sond Votume: Upslope Votume +pownstope Votume +Er►dslope Volume + Volume Under Medio <br /> 187.5 ft3 + 825.0 ft3 + 94.Q f� + 950.0 ft3= 2061.5 ft3 <br /> Divide ft3 by 27 ft3/yd3 to ca�utate cubic yards: 2061,5 ft3 : 27 = 76.4 yd3 <br /> Add 20%for cortstructability: 76.4 yd3 X 1.2 = 94.6 yd3 <br /> C. Calcutate Sandy Berm Volume: <br /> Tota!Berm Votume(opprox): ((Avg.Nbund Height- .5 ft topsoit)x Mound Width x Mound Length)+2=cu.ft. <br /> ( 3.9 _ 0.5 )ft X 40.0 ft X 70.0 < )+2= 4760.0 ft3 <br /> Total Mound Volume-tlean Sa►�volume-Rock Volume=cubic feet <br /> 4T60,0 ft3 - 2061.5 ft3 - ' S00.0 i ft3 = 2198.5 ft3 <br /> Divide ft3 by 27 ft3/yd3 to cakutate cubic yards: 2198.5 ft3 : 27 = 89.4 ' yd3 <br /> Add 209K for constructabitity: 81.4 yd3 X 1.2 = ; 97.�yd3 <br /> D. Catcutate Topsoil AAoteria!Volume: Totul A4ound Width X Totat Mound Length X.5 ft <br /> 40.0 ft X 70.0 ft X 0.5 ft = 1400.�ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards 1400.0 ` ft3 = 27 = 51.9 yd3 <br /> Add 20%for constructability: 51.4 yd3 x 1.2 = 62.2 yd3 <br /> I hereby certify that t have compieted this woric in accordance with ail applicable ordinances,rules and laws. <br /> Joseph J O�on 810 5/12/09 <br /> {Designer) (Signa (Lic (Date) <br />