Laserfiche WebLink
02/1.9/1999 08:41 4791547 ,,+'OL4:EN4 iT FACIE 04 <br /> • ' <br /> MOUND DESIGN WORKSHEET <br /> (For Flows up to 1200 gpd) , <br /> ) A. FLOW t?ailmuusd-s.:weSo Flow*in Canons Ivan day u '", <br /> Estimated LoP D gpd (see pages D-7 or I-3, 4,5) R�mlxr ,: <br /> or measured gpd x 1.5 = �I�dof Typal <br /> Typo 1I Typo Hi Type; <br /> sr. <br /> i <br /> ,l. <br /> - B SEPTIC TANK LIQUID VOLUMES 2 4 0 ;30000 �..21Ig . <br /> 4 600 375 256 ; <br /> 2 t�b m) gallons (see pages C-3 or C-5) --3-.--750" 450 294- , <br /> 6 900 325 332 �•L <br /> 7 1050 600 370 ill a ' A' <br /> S 1200 675. 402 ed..nr ,' <br /> C.- SOILS(refer to site evaluation) _ , <br /> 1. Depth to restricting layer = inches SepUrTask CM illos.litpil.a. <br /> Numhor oI M nimum Llquld Urpild cap-iIy with <br /> : 2 •. Depth of percolation tests = inches groom. <br /> � -i apamlty wbatodaqua) <br /> ,. •i 3. Percolation rate rni <br /> :o,I.. 7w 11125F 3 or 4 1000 1)00 <br /> il <br /> , 4. _ .,Land slope Urs % 74or6 1W01506 2250 <br /> o � 0 ,_ 3f ) <br /> vor 4 <br /> D. ROCK LAYER DIMENSIONS <br /> 1. Multiply flow rate by 0.83 to obtain required area of rock <br /> M1.i <br /> _.•__ layer: Daily Flow x 0.83 = -i <br /> • lo 44-0 gpd x 0.83 sq. ft./gpd = 5--aa sq. ft. r <br /> 2. Select width of rock layer (10 feet or less) = -- ft. <br /> -•-3. Length of rock layer = Area+Width = <br /> se,O sq. ft. - o ft. = So ft. Rock Bed Y <br /> • <br /> .:*::::„ti;.•; - -. ~.•.•-..:Width 510 ft. <br /> E ROCK VOLUME 1 - Length <br /> .t <br /> r • I Multiply rock area by rock depth to get cubic feet of rock; <br /> ' _ 1 R_S-0sq. ft. x ) ft. =-Soa cu. ft., I <br /> 2/ `._ Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards; <br /> a0 cu. ft. +27= 1 q cu. yd. <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br /> Cu. yd. x 1.4 ion/CU. yd. = ____ _ tons. } <br /> F. ADSORPTION WIDTH <br /> 1. Percolation rate in top 12 inches of soil is_ mpi Ahsnr)>tiun Width Sizing Table <br /> Peter-damn Roc aalions 1240o of <br /> 2. Select allowable soil loadingrate from table on page E-; in N'lIIIUICS per Soil Texture r do <br /> p $ � y pa' nn6rKtllio0 width ; <br /> Z Inch(MVI) cquaro foot 10 Ftock L.uycr <br /> gpd/ft w1Atn <br /> 3. Calculate adsorption width ratio by dividing rock layer Faster t1u,10.1• ccarteSend ---- <br /> OiiA to 5 sand 1.20 1.00 s <br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; 0.1 ill 5« Floc Sand•• 040 2.no <br /> 6 to 15 Sruidy Loom 0.79 132 <br /> 1.20 gpd/ft2-1- gpd/ft2= 161x30 Loan, 0.60 2.00 <br /> SI to 45 Silt Loam 050. 2.40 <br /> Check this value on page E-16. 46(066 Ctayyl_parn 0.45 2.67' <br /> C4 b 120 Cley 0.2d 5,{10 <br /> ' 4. Multiply adsorption width ratio by rock layer width to get x1120;elan cloy _. ----- <br /> -- required adsorption width; ,, <br /> x ft = f t <br /> L. <br /> , <br />