Laserfiche WebLink
A. <br />B. <br />C. <br />fvtUUNU UbSlt.;N WUH.KSHtt.1 <br />(For Flows up to 1200 gpd) <br />FLOW :)_ --i'~~-'i;;:-,l:!.-t:.A--'is,Y. <br />Estimated LJSU gpd (see pages D-7 or 1-3, 4, 5) Sl\ o <br />or measured -gpd x 1.5 = . n uA,\.-r.l,;,;;:\ ..... '<-'= <br />SEPTIC TANK LIQUID VOLUMES <br />:J..-JD DU gallons (see pages C-3 or C-5) <br />SOILS (refer to site evaluation) <br />1. Depth to restricting layer= ;;i, :l. ' <br />1..-to <br />1/ <br />;;,, 1o inches <br />2. Depth of percolation tests = I ~-II inches <br />3. Percolation rate \.-l, $" mpi <br />4. Land slope !d % <br />D. ROCK LA YER DIMENSIONS <br />1. Multiply flow rate by 0.83 to obtain required area of rock <br />layer: Daily Flow x 0.83 = <br />:S'Y o gpd x 0.83 sq. ft./gpd =~sq.ft. <br />2. Select width of rock layer (10 feet or less) = / O ft. <br />3. Length of rock layer= Area·+ Width= <br />yy "' sq. ft.+ I O ft.= y S° ft. <br />E. ROCK VOLUME <br />1. Multiply rock area by rock depth to get cubic feet of rock; <br />LI'-} ~sq. ft. X :1.£!(ft. = _:\1Q cu. ft. <br />2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards; <br />~ cu. ft. + 27 = _Ll cu. yd. <br />3. · Multiply cubic yards by 1.4 to get weight of rock in tons; <br />J.:J_ cu. yd. x 1.4 ton/ cu. yd.= 2'.::L tons. <br />F. ADSORPTION WIDTH l.. 1.-rl·'-'\ \..O "-l Yv I <br />l!stlmaLCd Sewage Plow, In Gallon a pa day <br />(gpd) <br />Number or Type I Type II Type Ill 1rf Bedrooms <br />-I-300 225 D 180 ~il.50 ·:roo 218 60t, <br />4 600 37S 256 "' .... s 750 450 294 .. 1 ... <br />la <br />6 900 525 332 1rr..1, <br />7 1050 600 370 m 8 1200 675 408 cohn• <br />Scpllc Ta■k Capoclll.,., In a•II•"'• <br />Nurnt-of Minimum Liquid Liquid corochy INith <br />lkidtooma c.p.clty aarbaae di,1~-1 <br />l0<lca1 750 112.S <br />l or4 100> 1500 <br />4 0< 6 1500 2250 <br />7, 8 or 9 7ru) )(XX) <br />0\'0(9 ··-·· <br />Absorption Width Slllng Tobie 1. Percolation rate in top 12 inches of soil is~ mpi <br />l'm:olallon Race Gallons Ralioof <br />I <br />2. Select allowable soil loading rate from table on page E-; <br />.4 ( gpd/ft2 <br />lnMinu1c,h SollTulun, pcrdoy per Absorp1ion wld1h <br />3. c;:akulate adsorption width ratio by dividing rock layer <br />loading rate of 1.20 gpd/ft2 by allowable soil loading rate; <br />1.20 gpd/ft2 + .3S.:.__ gpd/ft2 = 2. k'.'.2 . <br />Check this value on page E-16. <br />4. Multiply adsorption width ratio by rock layer width to get <br />required adsorption width; <br />' ?,t,,? X __}_Q_ ft = 28 ft <br />Inch (MP) <br />Fa.~1er 1han 0.1 • <br />0.110 S <br />0.1 IOS •• <br />610 15 <br />161030 <br />)I lo4S <br />4610 (,() <br />60 10 120 <br />SlowCTlhan <br />120 ... <br />aquare fOOI 10 Rock Loyer <br />Wid1h <br />COAJUSond ........ ......... <br />Sand 1.20 1.00 <br />Fine Sand•• 0.60 2.00 <br />Sandy Loam 0.19 l.~2 <br />Loam 0.60 2.00 sn, Loam 0.50 l.40 <br />Clay Loam 0.45 2.67 <br />Clay 0.24 S.00 <br />Clay ----........