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'• � '� • MOUND DESIGN WORKSHEET <br /> , , <br /> (For Flows up to 1200 gpd) <br /> A. �.Ow Estimated Seva6e Floa in Cailons per Day(gpd) ,.-� <br /> Estimated l00 o gpd <br /> Nianbv <br /> or measured -- x 1.5 = — gpd. s�e►�� �`I �'P`tI �m �ry�rv <br /> z soo Zas �so � <br /> 3 450 300 218 •r <br /> B. SII'TIC TANK LIQUID VOLUMES � 5 � « � .� <br /> �')��� g�OILS 6 900 525 332 � <br /> 7 1Q50 600 370 m�,. <br /> 8 1200 675 408 <br /> C. SOIIS (refer to site evaluation) „ N,� � �– <br /> 1. Depth to restricting layer = ��5�� � 3� inches B °� �,�` �,,� <br /> 2. Depth of percolation tests = 1 a inches `""'' `'""`' <br /> 3. Percolation rate 1,lo mpi 23 a';` ,'o�oo i',s o <br /> s or 6 1.300 Z.TSo <br /> 4. Land slope S % <br /> 7 a E 2,000 3,000 <br /> wa 9 See 6p C-6 (x 1S) <br /> D. ROCK LAYER DIlb�TSIONS <br /> 1. Multiply flow rate by 0.83 to obtain required area of rocic <br /> layer:A x 0.83 = <br /> C�oo • gpd x 0.83 sq.ft./gpd= w��t sq. ft-�,o���Sy��� <br /> 2 Select width of rock layer(10 feet or less) _ �o ft. <br /> 3. Length of rock layer=azea i width= R�g� <br /> Sy� sq.ft.+ �ft. _ �S ft. +i�r�f��l�}yt�f f�/y h}M1%yt,t� <br /> �•�•ti•1•�•�•ti•�•�•1•1•�•�w•ti•ti•ti <br /> {:ti:{:ti:�:ti:;.f�:'�:ti.ti:�:;:�:�r;?{ �dth 510 ft. <br /> �rti�tiKf��ti��rti�tir{rti:ti'ti tiflf'Nti <br /> .r.f.r.�.1.f.r�f.f.f•r.f.r.�.f.f. . <br /> E. ROCK VOLUME �— 1'�'g�' —� `� <br /> � <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; ��' <br /> S�� sq.ft. x /�S ft. = s�� cu. ft. <br /> 2. Divide cu. ft.by 27 cu.ft:/cu. yd. to get cubic yazds; <br /> S�y cu.ft. i 27=�_cu. yd. <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br /> 3�cu. yd.x 1.4 ton/cu. yd. _�_tons. <br /> F. ADSORP'ITON WIDTH G LA� L01A� Abso tion Nhdth Sian Dbk <br /> 1. Percolation rate in top 12 inches of soil is �_�� p �-- ;��, <br /> m i re,ca.ea,R,ee r-vr <br /> �„,��;,,d, Soii Texture �.*„� �� <br /> Ir <br /> 2. Select allowable soil loading rate from table; Faster than 0.1 oarse Sand 1.2o i.00 <br /> . �� $pd/ft2 O.i to5 sana i2o �.00 <br /> 0.1 to 5 Fne Sand" 0.60 2.00 <br /> 6 to 15 ndy Loam 0.79 1 S2 <br /> 3. Calculate adso tion width ratio b dividin rock la er 16 to�o �'°a�' o•� Z•� <br /> � Y g Y 31 to 45 Silt Loam �� Z•� <br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; �to�o c�a Lo� o.as z.b� <br /> 1.20�d/��- .�l_� �d/�= a•lo� Slowerthan 120 �lay 0.24 5.00 <br /> "Soil havie+6 509G a mare d fine or vey fine aand <br /> 4. Multiply adsorption width ratio by rock layer width to get <br /> required adsorption width; <br /> a,�� x��ft= a�.� ft , <br /> ,� <br />