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• MOUND DESIGN WORKSHEET <br /> (For Flows up to 1200 gpd) • <br /> A, FLOW liathm led Sowago I'luwt in Gam lax day <br /> Estimated 15-0 gpd (see pages 0-7 or 1-3,4, 5) <br /> -7,7; <br /> ltt'd) <br /> Ur measured gpd x 1.5 = _ of '1).141 7Y1w 11 Typo III 1)po <br /> Bedroom, ly <br /> 1 300 223 180 <br /> U. SEPTIC TANK LIQUID VOLUMES 3 430 300 2111 km <br /> 4 61x) 375 236 :dam <br /> Z-iZ6-t) gallons (see pages C-3 or C-5) 5 730 430 294 i. <br /> 6 9tx) 52 <br /> 0 332 <br /> 'f1 <br /> 1. <br /> 7 1030 61X770t I Z:131)n 46,-,pr zia-z III <br /> N <br /> 1200 613 4011 idWnn <br /> C. SOILS (refer to site evaluation) <br /> 1. Depth to restricting layer = L/ inches Sepik nnk''i'a I k•n to g i'l,...y <br /> Nvmkr of Minhnvm IJquld IJqu61 uprwlly W4h <br /> 2, Depth u{r percolation tests = / 2- inches Bedrooms capacity p.bntscimatal <br /> 3. Percolation rate _ 6-0 inpi 2orlemP ,+11 11x" <br /> 3 m 4 Iltial 13x11 <br /> 4. Land slope ,_ •-/-1Ltad'f% 4nr� tka <br /> D. ROCK LAYER DIMENSIONS <br /> . 1. Multiply flow rale by 0.83 to obtain required area of rock <br /> layer: Daily Flow x 0.33?4//p1,1;4 . <br /> 7S0 . gpd x 0.83 sq. ft./gpd d gs-sq. ft. <br /> 2. Select width of ruck layer,(10 feet ur less) = if ft. <br /> 3. Length of rock layer = Area + Width = <br /> GlY sq. ft. + 4) ft. = ( 9 ft. Rock Uel,t <br /> =- mow Lmigllt <br /> 1. Multiply rock area by ruck depth to get cubic feet of rock; e i/ <br /> OW sq. ft. x I ft. _ cu. ft. <br /> 2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards; <br /> 690 cu. ft. + 27 = 07¢ cu. yd. ' <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br /> JO cu. yd. x 1.4 ton/cu. yd. _ J tons. <br /> F. ADSORPTION WIDTH <br /> 1. Percolation rate in top 12 inches of soil is \-O mpg1AIlxt'r'1i11u11 wltllll tilzltiellible <br /> 2. Select allowable soil loading rate from table tut page E•' 1�bitit.fln'l ltnlo tisuorn, Ratio of <br /> It +cr swum,. 0,2,tiny ht AUataidlnn width <br /> �� gpd/f t' loch(MI'�) ultimo foto III hock 1.uycr <br /> "V"' <br /> 3. Calculate adsorption width ratio by dividing ruck layer rimy lhmt11,1• Coat*,Rodd <br /> 11.1 In S Rant 1.20 1.11) <br /> loading rate of 1.20 gpd/f t2 by allowable soil loading rate; 0.1 los ring Sand•• 0.00 2.10 <br /> 1.20 gpd/ft + rVSgpd/ft2= - 61o13 Sandy Imam 0.79 1.32 <br /> �/ 16l03U Loam 0.141 2.t$1 <br /> 1110 43 Silt Idmllt 0.30 2.40 <br /> Check this value vu pose L-'IG, ' rg4iii# Chtintltilk1 <br /> 4. Multiply adsorption width ratio by rock layer width to get )1Inw t::o CIxy <br /> required adsorption width; _ <br /> l a x 2.G7ft C 1 ft <br /> ____ .. <br /> J <br />