Laserfiche WebLink
H. SAND VOLUME <br /> 1. Upslope Volume+ Volume under rockbed+Downslope Volume Rockbed#2 =��i E D <br /> a.Upslope Volume:(depth of clean sand+1)x(upslope berm) x(mound length)/2=ft3 <br /> 2.0 ft x 10.0 ft x 43.0 ft 12 = 430.0 ft3 <br /> b.Volume under rocicbed: (average depth of sand under rock)x(rockbed width)x(mound length)=ft3 <br /> 1.3 ft x 10.0 ft x 43.0 ft = 559.0 ft3 <br /> c.Downslope Volume: (depth of clean sand+1)x(downslope berm)x(mound length)/2=ft3 <br /> 2.6 ft x 19.0 ft x 43.0 ft / 2 = 1062.1 ft3 <br /> Total cubic feet: = 2051.1 ft' <br /> 2. Divide ft3 by 27 ft3/yd3 to get cubic yards <br /> 2051.1 !27 = 76.0 yds3 <br /> 3. Multiply cubic yards by 1.4 to get weight of sand in tons <br /> 76.0 yds3 X 1.4 106.4 tons <br /> 4 Add 10�o for ConsVuctability <br /> 106.4 tons x 1.1 = 117.0 tons <br /> A-1 Estimated Sewage Flows in GPD <br /> No.of <br /> BdRns Class I Class II Class III Class IV <br /> 2 30p 225 180 60%of <br /> 3 450 300 218 the <br /> 4 600 375 256 values <br /> 5 750 450 294 in the <br /> 6 900 525 332 Class I, <br /> 7 105Q 600 370 il or II <br /> g 1200 675 408 columns <br /> D-33 Absorption Width Sizin Tabie <br /> Perc Rate So�Texture Loading Rate Absorption <br /> mpi gpd/sq ft Ratio <br /> Coarse sand <br /> <5 Loamy sand 1.20 1.00 <br /> Med.,Fine sand <br /> 6-15 Sand loam 0.79 1.50 <br /> 16-30 Loam 0.60 2.00 <br /> 31-45 Silt Loam,Silt 0.50 2.40 <br /> 46-60 Clay loam,Silry 0.45 2.67 <br /> or Sand Cla Loam <br /> 61-120 Silty or Sandy <br /> Clay or Clay 0.24 5 <br /> >120' <br /> "Must be other or rformance. <br /> Page 3 of 5 <br />