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SAND VOLUME <br /> , Upslope Volume+Volume under rockbed+Downslope Volume <br /> a.Upslope Volume:(depth of dean sand+1)x(upslope berm) x(mound length)r 2=ft3 <br /> 02• C ft x 1 ft x ---P— <br /> ft r2 ; la l'0 ft3 <br /> b.Vi• rafted: (average depth of sand under rock)x(rockbed width)x(rto and length) <br /> ft x j-0 ft x e,6 ft e so_5 ftp <br /> c.Dowrnslope Volume: (depth of dean sand+1)x(downslope berm)x(mound length)/2=ft33 t13 Q ��77� <br /> cubic feet ft a x 5 .7 S ft x `, ft ! 2 = ca�5� t? ` <br /> Divide 113 by 27 teryd'to get aubicards <br /> 5 .325 /27 = (9O0 Ye <br /> Multiply cubic yards by 1.4 to gat weight of sand In tons <br /> LQ 00 yds3x 1.4 8'0 tons <br /> Add 10%for Constructabl(ly ., <br /> c 6L' tons x 1.1= ,3 0 c tons <br /> ►M mad Sewage Flows if OPD <br /> No.of <br /> 8drms Class I Class II Class 1N 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 Class I, <br /> 7 1060 600 370 0 or tl <br /> 8 1200 675 408 columns <br /> D-33 Absorption IN 10 Stag Table <br /> Pero Rets Sad Terme Loading Rate Absorption <br /> m0 gpdraq ft Ratio <br /> Coarse sand <br /> <5 Loamy sand 1.20 1.00 <br /> Med,Fite sand <br /> 16-30 Loam 0.60 200 <br /> 31-45 Sift Loam,Sit 0.60 2.40 <br /> 46-60 Clays loam,try OAS 2.67 <br /> or Sandy Clay Loam <br /> 61-120 Slily or Sandy <br /> Cl <br /> >120' ay or Clay 0.24 5 <br /> `Moet be other or performance: <br /> Plana 3nf <br />