2008 - Soil & Percolation Testing

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50.0 ft X 10.0 ft X 1.0 = 500.0 ft3 Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 500.0 ft3 _ 27 = 18.5 yd3 Add 20%for constructability: 18.5 yd3 X 1.2 = 22.2 yd3 B. Calculate Clean Sand Volume: Upslope Volume: ((Upslope Mound Height- 1)x 3 x Media Length)+2=cubic feet (( 4.0 ft - 1) X 3.0 ft X 50.0 )+2 = 225.0 ft3 Downslope Volume: ((Downslope Height- 1) x Downslope Absorption Width x Media Length)+2= cubic feet (( 4.3 ft- 1) X 10.0 ft X 50.0 )+2 = 247.5 ft3 Endslope Volume: (Downslope Mound Height- 1) x 3 x Media Width =cubic feet ( 4.3 ft- 1 ) X 3.0 ft X 10.0 ft = 99.0 ft3 Volume Under Rockbed: Average Sand Depth x Media Width x Media Length = cubic feet 2.2 ft X 10.0 ft X 50.0 ft = 1075.0 ft3 Total Clean Sand Volume: Upslope Volume +Downslope Volume +Endslope Volume + Volume Under Media 225.0 ft3 + 247.5 ft3 + 99.0 ft3 + 1075.0 ft3 = 1646.5 ft3 Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1646.5 ft3 = 27 = 61.0 yd3 Add 20%for constructability: 61.0 yd3 X 1.2 = 73.2 yd3 C. Calculate Sandy Berm Volume: Total Berm Volume(approximate): Average Mound Height x Mound Width x Mound Length_2=cubic feet ( 4.2 ft X 43.0 ft X 78.0 )+2 = 6959.6 ft3 Total Mound Volume- Clean Sand volume=cubic feet 6959.6 ft3 - 1646.5 ft3 = 5313.1 ft3 Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 5313.1 ft3 _ 27 = 196.8 yd3 Add 20%for constructability: 196.8 yd3 x 1.2 = 236.1 yd3 D. Calculate Topsoil Material Volume: Total Mound Width X Total Mound Length X.5 ft 43.0 ft X 78.0 ft X 0.5 ft = 1677.0 ft3 Divide ft3 by 27 ft3/yd3 to calculate cubic yards: 1677.0 ft3 : 27 = 62.1 yd3 Add 20%for constructability: 62.1 yd3 x 1.2 = 74.5 yd3 I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. Joseph J Olson - 810 11/24/2008 (Designer) (Signature) (License#) (Date)