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, • MOUND DESIGN WORKSHEET 5 <br /> (For Flows up to 1200 gpd) <br /> A. �,Q�1 Fstimated Sewage F1ows in Gallons per day <br /> d) <br /> Estimated�gpd Number Type 1 Type D 'Iype ID Type <br /> or measured x 1.5 = gpd. �� <br /> i 30o zu iso �, <br /> B. SEPTIC TANK LIQUID VOLUMES a '6050o s°s° Zzs� �f"� <br /> �� <br /> .Z� gallons 6 '9050o su 3�i T,'a,. <br /> � ioso 60o s�o u a <br /> 8 1200 675 408 � <br /> C. SOILS(refer to site evaluation) `°'"""� <br /> 1. De th to restrictin la er=��inches 2 feet � w � ,� <br /> P g Y � ��„ <br /> 2. Depth of percolation tests= /z inches �`��` `�'�`�'"�`"�'��' �"`��`°'�& <br /> e�� �n �cs�ds�w urt��a <br /> x��� iw ��u �sao <br /> 3. Texture Percolation rate .So mpi �.x< �000 ,� � <br /> 4. Land slope � % 75RN�9 �� ,� � <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 /> �o�gpd x 0.83 sq. ft./gpd = -Soo sq. ft. <br /> 2. , Select width of rock layer (max 10' if<120 mpi max 5') _ /o ft. <br /> 3. Length of rock layer =area=width= : -s.A�d.e�Aa o�:e a.a.:e �o <br /> �}.� °� ,$ee��'e�paqe� . t.�: <br /> a.�l d� �� y�ae' �eea , IY'V '4- . <br /> sq. ft.= �ft. = ft. .Q�,��„a��k� � <br /> 4... � ,�q,�o ao aonb g4 __ .. . : . . .:: ' <br /> �: <br /> Wl�lll�� 4o'•i �s. "o{T b tTOD 9 ^ a e ey i,. <br /> <120mpi <10' Length r'o ft <br /> E. ROCK VOLUME <br /> >120mpi <5' <br /> 1. Multiply rock area by rock depth to get cubic feet of rock;��q. ft. x / <br /> ft. =�� cu. ft. <br /> 2. Divide cu. ft.by 27 cu. ft./cu. yd. to get cubic yards; <br /> �cu. ft. -27= 2 o cu.yd. <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons; zo cu. yd. x 1.4 <br /> ton/cu. yd. _�tons. <br /> F. ABSORPTTON WIDTH Absotption Width Sizing Tl,ble <br /> 1. Percolation rate in top 12 inches of soil is�.�npi ��,�� �,u� �,�,►n�;� <br /> Texture o�-„�. ►�o�����n sa�T�� �r� �w� <br /> Fasoer t6an 0.1 Coarse Sand 1.20 1.00 <br /> 0.1 to 5 Saod 1.20 1.Op <br /> 2. Select allowable soil loading rate from table; o.��5 Fne Sand o.�o z.00 <br /> -�- �Pd�� was sa� � � <br /> 46 ro 60 pay L.osm 0.45 2.67 <br /> 60to!20 Clsy 0.24 5.00 <br /> 3. Calculate adsorption width ratio by dividing rock layer s�o,,,��n��zo c,aY o.�0 6.00 <br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; <br /> 1.20 gpd/ftz= • o gpd/ft2= Z. O <br /> 4. Multiply adsorption width ratio by rock layer width to get <br /> required adsorption width; <br /> 2 x 1�ft= •Za ft <br />