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� H. SAND VOLUME <br /> 1. Upslope Vo�ume+ Volume under rodcbed+Downslope Volume ocR kbed#1 S�'I L�J <br /> a.Upslope Volume:(depth of clean sand+1)x(upslope berm) x(mound length)/2=ft3 <br /> 2.5 ft x 9.5 ft x 59.0 ft /2 = 700.6 ft3 <br /> b.Volume under rodcbed: (average depth of sand under rodc)x(rockbed width)x(mound length)=ft3 <br /> 2.1 ft x 10.0 ft x 59.0 ft = 1239.0 ft3 <br /> c.Downslope Volume: (depth of dean sand+1)x(downslope berm)x(mound length)12=ft3 <br /> 3.7 ft x 18.0 ft x 59.0 ft / 2 = 1964.7 ft3 <br /> Total cubic feet: = 3904.3 ft3 <br /> 2. Divide ft3 by 27 ft31yd3 to get cubic yards <br /> 3904.3 /27 = 144.6 yds3 <br /> 3. Multiply cubic yards by 1.4 to get weight of sand in tons <br /> 144.6 yds3 x 1.4 202.4 tons <br /> 4 Add 10%for Construdability <br /> 202.4 tons x 1.1= 222.7 tons <br /> A-1 Estimated Sewage Flows in GPD <br /> No.of <br /> Bdrms Class I Class II Class III Class IV <br /> 2 300 225 180 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 Ciass I, <br /> 7 1050 600 370 II or II <br /> 8 1200 675 408 columns <br /> D-33 Absor tion Width Sizin Table <br /> Perc Rate Soil 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,Silty 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 performance. <br /> Page 3 of 5 <br />