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� ' Viw� <br /> _ �t. <br /> 1. Upslope VolUme+ Volume under rockbed+Downslope Volume <br /> a.Upslope Volume:(depth of clean sand+�)x{upsfope berm) x(mound length)I 2=ft3 <br /> 2.8 ft x 7.8 ft x 40.6 ft /2 = 443.4 ft3 <br /> b.Volume under rockbed: (average depth of sand under rock)x(rockbed widtli)x(mound length)=ft3 <br /> 3.0 ft x 10.0 ft x 40.6 ft = 1197.7 ft3 <br /> c.Dovwislope Volume: (depth of dean sand+1)x(downslope berm)x(mound length)12=ft3 <br /> 5.1 ft x 54.5 ft x 40.6 ft / 2 = 5642.4 ft3 <br /> Total cubic feek = 7283.4 ft3 <br /> 2. Divide ft�by 27 ft3tyd�to get cubic yards <br /> 7283.4 !27 = 269.8 yds3 <br /> 3. Multiply cubic yards by 1.4 to get weight of sand in tons <br /> 269.8 yds3 X 1.4 377.7 tons <br /> 4 Add 10°�for Constructability <br /> 377.7 tons x 1.1 = <br /> A-1 Estimated Sewage Flows in GPD <br /> No.of <br /> B�ms Class I Class II Class AI Class IV <br /> 2 3Q0 225 18(t 60%of <br /> 3 450 300 218 the <br /> 4 600 375 256 values <br /> 5 750 450 294 in the <br /> 6 9fl0 525 332 Class I, <br /> 7 �d50_ 600 370 II or II <br /> 8 1200 675 448 columns <br /> D-33 Absor ion wdth Sizin Table <br /> Perc Rate Sal Texture Lo�ng Rffie Absorption <br /> mpi gpolsq ft Ratio <br /> Coarse sand <br /> <5 Loamy sand 9.2Q 1.00 <br /> Med.,Fine sand <br /> 6-15 San loam 4.75 1.50 <br /> 16-30 Lo� O.SO 2.00 <br /> 31-45 SiltLoam,Silt 0.5d 2.40 <br /> 46-60 Clay loa►n,Silty a.45 2.67 <br /> or Sa CI Loam <br /> 61-120 Silty or Sandy <br /> Clay or Clay D24 5 <br /> >120* <br /> 'Must be ott►er or ance. <br /> Page 3 of 6 ' <br />