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r }1- I N r- ►-- <br />VaLv* lS1044 MOUND DESIGN WORKSHEET <br />5•r,1�•3 (For Flows up to 1200 gpd) <br />A. FLOW <br />Estimated gpd (seepages D-7 or I-3, 4, 5) <br />or measured gpd x 1.5 = <br />B. SEPTIC TANK LIQUID VOLUMES <br />1 �(� gallons (see pages C-3 or C-5) <br />C. SOILS (refer to site evaluation) <br />1. Depth to restricting layer = �'�- inches <br />2. Depth of percolation tests = inches <br />3. Percolation rate `? mpi <br />4. Land slope 4 <br />D. ROCK LAYER DIMENSIONS <br />1. Multiply flow rate by 0.83 to obtain required area of rock <br />layer: Daily Flow x 0.83 = <br />oo gpd x 0.83 sq. ft./gpd = J sq. ft.::^. ,-'^;" <br />2. Select width of rock layer (10 feet or less) = i v ft. <br />3. Length of rock layer = Area + Width = <br />1 sq. ft. + l� ft. = ft. <br />E. ROCK VOLUME <br />1. Multiply rock area by rock depth to get cubic feet of rock, <br />z= sq. ft. x lyL ft. = ayj cu. ft. <br />2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards; <br />. vu, cu. ft. + 27 = _i i cu. yd. <br />3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br />I, cu. yd. x 1.4 ton/cu. yd. = _LL tons. <br />F. ADSORPTION WIDTH e L. PM L-00-r <br />1. Percolation rate in top 12 inches of soil is Iv.;� m17i <br />2. Select allowable soil loading rate from table on page E-,- <br />.< gpd/ft? <br />3. Calculate adsorption width ratio by dividing rock lager <br />loading rate of 1.20 gpd/ft" by allowable soil loading rate; <br />1.20gpd/ft2+ .&+gpd/ft2= a.t,- <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 />x 10 ft =ac..2 ft <br />Fali=Ncd Se"t Florle is Getkre pa dey <br />clan <br />w11ea <br />Of <br />7j Fs 1 <br />7yye II <br />Type III <br />7y <br />Redreeme <br />Iv <br />2 <br />300 <br />223 <br />too <br />3 <br />ISO <br />300 <br />211 <br />a <br />4 <br />600 <br />373 <br />236 <br />S <br />M <br />4" <br />2" <br />•.1.e <br />r <br />6 <br />900 <br />325 <br />332 <br />Tr L <br />7 <br />8 <br />1050 <br />1200 <br />600 <br />673 <br />370 <br />406 <br />m <br />.�,.� <br />Sg1k Ts.►C.p W6%1. t.e" <br />Vwrorr o/ <br />Mmruon L.�.J <br />L.�uJ cp.�ny r.� <br />ILobuom. <br />Cti•..:� <br />p.e.ee Ji.p.-I <br />w kn <br />750 <br />1123 <br />3 W 4 <br />100 <br />ISW <br />4 a 6 <br />1310 <br />U% <br />7.8w9 <br />Zan► <br />xuo <br />Rock Bed <br />ti•�• +•�•ti•ti•ti•�•ti•,,•ti•,,• <br />a Length <br />AbsorpiSm Wkkb SI>slt gM" <br />ramo m Itme <br />Y 1Nieelee <br />Isek 0.1n) <br />SoM Tenwe <br />Gdkm <br />per dey pa <br />tgert tm <br />Its" Of <br />AbmmM*m ridr <br />w Reek Leya <br />Mask <br />FNW wee W <br />tr.els Seed <br />_. <br />0.1IDS <br />Send <br />1.30 <br />IAO <br />0.1 IDS •• <br />Fim Sed ee <br />0.60 <br />2.00 <br />S�'32 <br />I2110 <br />61eI30 <br />I etm <br />0.79 <br />60 <br />31 10.3 <br />Sib Lam <br />0.30 <br />2.40 <br />461060 <br />cltr <br />0.45 <br />2.67 <br />400120 <br />0.26 <br />Sm <br />SIOMWON <br />Clay <br />- <br />