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1998-02-04 Septic System Design Specifications
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1998-02-04 Septic System Design Specifications
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Last modified
9/19/2024 11:09:56 AM
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x Address Old
House Number
940
Street Name
Brown
Street Type
Road
Street Direction
South
Address
940 Brown Road South
PIN
1011723120004
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MOUND DESIGN WORKSHEET <br />(For Flows up to 1200 gpd) <br />A. FLOW . <br />Estimated ^oO gpd I “^'2- pu s-e C“c»av «m^ <br />or measured — x 1.5 ■ ~ gpd. <br />B. SEPTIC TANK UQUID VOLUMES <br />/ - ^ )-/oao gallons V4 <br />/OOO . <br />C. SOILS (reftf to site evaluation) <br />’0 -3^> - 2!1. Depth to restricting layer < <br />2. Depth of percolation tests ■ / ^ <br />3. Percolation rate mpi <br />4. Land slope_____^____% <br />* I A <br />inches <br />inches <br />Eitkiuiad Stwigt Flow in GtJlont per D*y (fp^ <br />Nwmber <br />of <br />Bod^ooms TVl-l Typ*M TVp.m TVp.IV <br />2 <br />3 <br />• 4 <br />5 <br />6 <br />7 <br />1 <br />300 <br />450 <br />600 <br />750 <br />900 <br />1050 <br />1200 <br />225 <br />300 <br />375 <br />450 <br />525 <br />600 <br />675 <br />110 <br />2)1 <br />256 <br />294 <br />332 <br />370 <br />401 <br />«e« <br />of <br />IM <br />• dwm <br />la <br />lao <br />, <br />Hwmbm <br />a <br />3«rlHi <br />9er4 <br />5or4 <br />7irl <br />ov«f <br />750 <br />1400 <br />1400ajooo <br />SmO|.C4 <br />uu <br />1400 <br />UM <br />).000 <br />(114) <br />D. ROCK LAYER DIMENSIONS <br />1. Multiply flow rate by 0.83 to obtain required area of rock <br />layenAx 0S3« <br />^oo . gpd X 0.83 sq. ft./gpd * 04^ sq. ft. <br />2. Select ividth of rock layer (10 feet or less) = /d ft. <br />3. Length of rock layer ■ area width « <br />sq. ft. yo ft. * ft. <br />Rock Bed <br />E. RCXK VOLUME <br />1. Multiply rock area by rock depth to get cubic feet of rock; <br />94n sq. ft a M cu. ft. <br />2. Divide cu. ft by 27 cu. ft/cu. yd. to get cubic vards; <br />OiiiL cu. ft 27 « _A2i-cu. yd. <br />3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br />ru. yd.X 1.4 ton/cu. yd. * UQ tons. <br />Length <br />F. ADSORPTION WIDTH <br />1. Percolation rate in top 12 inches of soil is 12.mpi <br />1 Select allowable soil loading rate from table; <br />.Mr gpd/ft» <br />3. Calculate adsorption width ratio by dividing rock layer <br />leading rate of 1.20 gpd/ft2 by allowable soil loading rate; <br />’..20gpd/ft*+j^^gpd/ft*« .a.UP <br />4. Multiply adsorption width ratio by rock layer width to get <br />required adsorption width; <br />X JO ftB^W.O ft <br />AbMWtan width SUM 1bbk <br />PffcelitfonlUtt <br />MlnviMw?lne>iimfo <br />Soil Texturi rmZi^sr «4Ml«a**rpr <br />Fatter than 0.1 <br />0.1 to 5 <br />0.1 to 5 <br />6 to 15 <br />16 to 30 <br />31 to 45 <br />46 to 60 <br />6110120 <br />Slower than 120 <br />CoarteSand <br />Sand <br />Fine ^d** <br />Sandy Loam <br />Loam <br />SUt Loam <br />Qay Loam <br />Oay <br />Clay <br />uouo <br />040 <br />0.79 <br />0.60 <br />050 <br />0.45 <br />0.24 <br />1.00 <br />1.00 <br />2.00 <br />152 <br />2.00 <br />2.40 <br />2.67 <br />3.00 <br />** M Kavlni M «r mm «f Am or very Ane aand.
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