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7. APPROXIMATE MOUND MATERIAL CALCULATtONS: <br /> A. Calcutate 8ed (rock) Vo(ume: Bed Length (2.C)X Bed Width (2.B)X Depth = Volume (ft3) <br /> 63.0 ft X 10.0 ft X 1.0 = 630.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to catcutate cubic yards: <br /> 630.0 ft3 = 27 = 23.3 yd3 <br /> Add 20%for constructability: 23.3 yd3 X 1.2 = 28.0 yd3 <br /> B. Calculate C(ean Sund Volume: <br /> llpslope Votume: ((Upslope Mound Height - 1)x 3 x Bed Length)=2=cubic feet <br /> (( 3.O�ft - 1) X 3.0 ft X 63.0 )=2= 189.0 ft3 <br /> Downslope Volume: ((Downslope Height- 1) x Downstope Absorption Width x Media Length) -�-2=cubic feet <br /> (( 4.�ft- 1) X 10.0 ft X 63.0 )=2 = 1008.0 ft3 <br /> Endslope Vo(ume: (Downs(ope Mound Height- 1) x 3 x Media Width =cubic feet <br /> ( 4.2 ft- 1 ) X 3.0 ft X 10.0 ft = 96.0 ft3 <br /> Volume Under Rockbed: Average Sand Depth x Media Width x Media Length =cubic feet <br /> 1.6 ft X 10.0 ft X 63.0 ft = 1008.0 ft3 <br /> Total Ciean Sand Volume: Upstope Votume +poWnslope Volume +Endslope Volume + Volume Under Media <br /> 189.0 ft3 + 1008.0 ft3 + 96.0 ft3 + 1008.0 ft3- 2301.0 ft3 <br /> Divide ft3 by 27 ft3/yd3 to catculate cubic yards: 2301.0 pt3 : 27 = g5.2 yd3 <br /> Add 20%for constructability: 85.2 yd3 X 1.2 = C 102.3 yd3 <br /> C. Calculate Sandy Berm Volume: <br /> Total Berm Volume(approx): ((Avg.Mound Height - .5 ft topsoil}x Mound Width x Mound Length)+2=cu. ft. <br /> ( 3.6 _ 0.5 )ft X 41.0 ft X 83.0 )=2= 5274.7 ft3 <br /> Total Mound Volume- Clean Sond volume-Rock Volume=cubic feet <br /> 5274.7 ft3 - 2301.0 ft3 - 630.0 ft3 = 2343.7 ft3 <br /> Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 2343.7 ft3 = 27 = 86.�yd3 <br /> Add 20%for constructability: 86.8 yd3 X 1 2 = 104.2 yd3 <br /> D. Calcutate Topsoil Materia( Volume: Tota(Mound Width X Tota!Mound Length X.5 ft <br /> 41.0 ft X 83.0 ft X 0.5 ft = 1701.5 ft3 <br /> Divide ft3 by 27 ft3/yd3 to catculate cubic yards: 1701.5 ft3 : 27 = 63.0 yd3 <br /> Add 20%for constructability: 63.0 yd3 X 1.2 = 75.6 yd3 <br /> I hereby certity that I have completed this work in ccordance with all applicable ordinances, rules and laws. <br /> Joseph J Olson 810 11/4/09 <br /> (Designer) (Signature) (License#) (Date) <br />