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MOUND DESIGN WORKSHEET <br /> (For Flows up to 1200 gpd) <br /> Estimated Sonja min Gallons per d+ <br /> A. FLOW r 'Type! cypan �ypem ` <br /> Estimated '75.c) gpd <br /> or measured , - x 1.5 ==gpd. 2 303 225 ISO <br /> 3 450 300 218 a b <br /> B. SEPTIC TANK LIQUID VOLUMES 46 7 Qs m "lye <br /> -./.1... ___D `#) 1 Z 0 gallonTm <br /> 6 1050 520 332 h a <br /> 1200 675 408 m <br /> FL-tVA- S i fl' - I <br /> C. SOILS (refer to site evaluation) '�' DWIt1,e,a..., <br /> a �,o_inches_feet ).*W Uq d > , I"I a <br /> 1. Depth to restricting layer ..ate ,,,,�, ,W <br /> 2. Depth of percolation tests = �� 1 1300 <br /> 3. Texture 4.- --0____.-.k... -.,w Percolation rate 3.S mpi 'a=" IA 1" I ,oma <br /> 4. Land slope _S <br /> D. ROCK LAYER.DIMENSIONS <br /> 1. Multiply flow rate by 0.83 toob3tain ft./gpd <br /> area f rock f , <br /> layer.. A x 0.83 = <br /> . ---gpd 0.83 <br /> 8q ' / ft. <br /> 2. Select width of rock layer (max 10' if <120 mpi max 5') = <br /> 3. Length of rock layer = area +width = . :AV-4:6 . • _ .- <br /> ft. .a.-wiP4A+x..I/1%�n w►w'f <br /> _sq. ft. + L._.ft. _ .�... ,3 -.• �E+. . .N y•f'..vrvt•�r,r,,r�•t.e�.c•tas",_v„,..a" <br /> Width_io ft <br /> el''%4Vri7 tSJ:.. <br /> . <120mpi <10' Length . ft <br /> >120mpi <5' <br /> E. ROCK VOLUME <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; z sq. ft. x, <br /> ft. = cu. ft. <br /> 2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards; <br /> 1 cu. ft. +27 = a cu. yd. <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons; =y cu. yd. x 1.4 <br /> ton/cu. yd. = , ',Li tons. <br /> F. ABSORPTION WIDTH Absorption width Sizing Tibia <br /> 1. Percolation rate in top 12 inches of soil is 3,C mpi Paredtaioew.ala Gallons brioanea <br /> M1°t"pt i lees Soil Totten For <br /> Pef W <br /> Texture ��.�� �-o�`^� Pl boa <br /> Paster the 0,1 Coon Seed 1.20 1.00 <br /> 0.1 to 5 Said 1.20 1.00 <br /> 2. Select allowable soil loading rate from table; 0.1 a S Fla Saud 0.60 2.00 <br /> 6 e013 Seedy Loam 0.79 1.52 <br /> gpd/ft231 s45 Loam Si 0:0 i44 <br /> 46 ao 60 C1ry Laic 0.45 2.6 <br /> • <br /> 0 <br /> 3. Calculate adsorption width ratio by dividing rock layer 'e"1a1°"'120 Cls' 0.206.0 <br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; <br /> 1.20gpd/ft2+ ' gpd/ = . a- '7 . <br /> 4. • Multiply adsorption width ratio by rock layer width to get <br /> required adsorption width; <br /> 2 .•' x ls; ft = ft <br />