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MOUND DESIGN WORKSHEET <br />(For Flows up to 1200 gpd) <br />A. FLOW <br />Estimated 6 0 o gpd <br />or measured x 1.5 = gpd. <br />B. SEPTIC TANK LIQUID VOLUMES <br />0mr /Z So gallons t Dab /oo o 6'14 <br />4 00f .0000 ""law J*Umpvc <br />C. SOILS (refer to site evaluation) <br />1. Depth to restricting layer = / inches <br />2. Depth of percolation tests = /y inches <br />3. Percolador. rate 7.o mpi <br />4. Land slope -S % <br />EskssW Sewsp Flow in G&H m per DaY <br />Nomof <br />cw� <br />Bedpoo" <br />w <br />P: �,. <br />e... <br />Redroorm <br />Type I <br />Type 11 <br />Type m <br />Type lv <br />2 <br />2110 <br />225 <br />110 <br />6n <br />3 <br />450 <br />200 <br />218 <br />do <br />1 <br />s <br />600 <br />750 <br />275 <br />450 <br />256 <br />294 <br />.r.,, <br />+. <br />6 <br />7 <br />900 <br />1@!0 <br />525 <br />600 <br />222 <br />270 <br />r <br />1 <br />12oo <br />675 <br />408 <br />1 Vuy Loam <br />Naber <br />ra <br />cw� <br />Bedpoo" <br />w <br />P: �,. <br />e... <br />23 lea <br />150 <br />1.125 <br />Faster than 0.1 <br />U40 <br />7w/ <br />Z <br />tzoo0 <br />2.= <br />Sand1.20 <br />carer f <br />3"4C.6 <br />to /.5) <br />D. ROCK LAYER DIMENSIONS - -- - - - <br />1. Multiply flow rate by 0.83 to obtain required area of rock <br />layer: A x 0.83 = <br />6Do gpd x 0.83 sq. ft./gpd = SOD sq. ft. <br />2. Select width of rock layer (10 feet or less) _ /O ft. <br />3. Length of rock layer = area + width = Rock Bed <br />Soo sq. ft. + /V ft. _ 1r4 ft. <br />MON <br />. t th 510 ft. <br />E. ROCK VOLUME <br />H- Length <br />1. Multiply rock area by rock depth to get cubic feet of rock; <br />Soo sq. ft. x _, ft. - soo cu. ft. <br />2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards; <br />SZ. cu. ft. + 27 = ,&LS cu. yd. <br />3. Multiply cubic yards by 1.4 to get weig.. c rock in tons; <br />/ .S cu. yd. x 1.4 ton/cu. yd. - 2 6 .ons. <br />F. ADSORPTION WIDTH <br />1. Percolation rate in top 1 'es of soil is 7. o mpi <br />2. Select allowable soil loading rate from table; <br />6D gpd/fO <br />3. Calculate ads.. r►don width ratio by dividing rock layer <br />loading rate of 1.20 gpd/ft2 by all,,)wable soil loading rate; <br />1.20 gpd/ft2+ - CO gpd/fe - 2.0 . <br />4. Multiply adsorption width ratio by rock layer width to got <br />required adsorption tviddi, <br />2 o xj_ft. 2 0 ft <br />wwwsdmuk <br />t�eta.l.w.11a. <br />t gip.. iri <br />Soil Texture <br />w <br />P: �,. <br />e... <br />Faster than 0.1 <br />Sara <br />!20 <br />1.00 <br />0.1 to S <br />Sand1.20 <br />1.00 <br />0.103 <br />Fine Sam- <br />0.6C <br />2.00 <br />Lom <br />0.79 <br />152 <br />16 to130 <br />Lam <br />0.60 <br />2.00 <br />31 to 4S <br />Silt Loam <br />050 <br />2.40 <br />462060 <br />1 Vuy Loam <br />0.45 <br />2.67 <br />61 t0120 <br />Clay <br />1 <br />024 <br />5.00 <br />wer than 120 <br />Cay <br />- <br />I - <br />r-Sod MvWS S0% er nem d finer •. wq ane ssrA <br />