Laserfiche WebLink
MOUND DESIGN WORKSHEET <br /> , (For Flows up to 12.00 gpd) <br /> A. FLOWEulaurodwa <br /> Sege Flows in Gallons per day <br /> (rod) <br /> Estimated /a,o.o gpd 3'vu-z,,\ .;,, u p.)s,, 9 ,r <br /> ?, ., <k;- Ntmsber ITypei lypen 1YFem <br /> or measured - x 1.5 = gpd. Bain= <br /> 1802 303 725 <br /> 218 <br /> 3 450 300 el tbe <br /> B. SEPTIC TANK LIQUID VOLUMES4 600 375 „11„a <br /> 5 750 450 294 io <br /> 7, - / o gallons r", v6 900 525 332 Type 1. <br /> ' 1200 675 1050 6 <br /> 370 g or <br /> 8408 columns <br /> Om*C. SOILS (refer to site evaluation) Om*Tourc„a.d,raits valor) <br /> 1. Depth to restricting layer= I a s- 3o inches feet r <br /> *obit <br /> s : �NgWd�� ""is <br /> 2. Depth of percolation tests= _ inches � Capacity pato n <br /> 3. Texture c\--DL 0 A '-1 Percolation rate 13 .5 mpi ' ZOO <br /> s3`s 750ICOO 1115 zip 1500 <br /> 1503 2250 X03 <br /> 4. Land slope e., % 7.AatV - 2000 Sano <br /> • <br /> D. ROCK LAYER.DIMENSIONS <br /> 1. Multiply flow rate by 0.83 to obtain required area of rock layer: A x 0.83 = <br /> .00 gpd x0.83sq. ft./gpd = ani - sq. ft:Vx,s-t, \,I-„o - $IO <br /> 2. Select width of rock layer (max 10' if<120 mpi max 5') = /o ft. <br /> 3. Length of rock layer= area+width= cr <br /> r.w <br /> �i v-6 <br /> so_sq. ft. + /0 ft. _ f t• �rf4x • � 4,,, _ <br /> Width o ft - - ' ' <br /> <120mpi <10' Length /o o ft <br /> '1 <br /> >120mpi <5' �� c7:7 <br /> E. ROCK VOLUME <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; sc>o sq. ft. x 1.0 <br /> ft. = (Ac/ cu. ft. <br /> 2. Divide cu. ft.by 27 cu. ft./cu. yd. to get cubic yards; <br /> lug..cu. ft. +27=, CS cu. yd. <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons;l•.cu. yd. x 1.4 <br /> ton/cu.yd. = 3 . tons. <br /> F. ABSORPTION WIDTH Absorption Width Sizing Table <br /> 1. Percolation rate in top 12 inches of soil is mpi Pereoladoo Rasa in Gallons Rau ofAhscrp6co <br /> Minuses pet loch Sell Tann per day per width to Rock <br /> Texture C`-p l-0 A w 1 CM ) atnon 1: layer width <br /> Passer Mao 0,1 Cans Sand 1.20 Loa <br /> 0.1 to 5 Sued 1.20 1.00 <br /> 2. Select allowable soil loadingrate from table; 0.1 to 5 Fla Seed 0.60 2.00 <br /> 6,o 15 Sandy Loam 0.79 1.52 <br /> `-I s' gpd/ft2 31 so <br /> 55 Loom SI Loom °0'0 2.4400 <br /> 64:11:11230 <br /> 6so6o Clay Lam 0.45 2.67 <br /> .24 <br /> 3. Calculate adsorption width ratio by dividing rock layer SI°"4dtaa 120 Clay 0.2060 <br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; <br /> 1.20 gpd/ft2+ ,Li S gpd/ft2= . a-(4 <br /> 4. • Multiply adsorption width ratio by rock layer width to get <br /> required adsorption width; <br /> a.I") x 13 ft=ar..9 ft <br />