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MOUND DESIGN WORKSHEET <br /> (Foz Flows up to 1200 gpd) <br /> A. FLOW �a s�•t•��»,u,au,«u a�. <br /> Fstimated�o gpd "a �°' �`�'p°° �°m � <br /> or measured..=._.x 1.5 ==Spd. <br /> � �oo us iao � <br /> � �so �o0 2ta a, <br /> B. SEPTIC TANK LIQUID VOLUMFrS s �� ;'� n�+ � <br /> /-l�,�o � � —i000 gallons . � � � ro <br /> � t I �zoo a�s �oa �'Q <br /> . � � <br /> C. SOIIS (refer to site evaluation) „ <br /> 1. Depth to restricting layer� a y> inches r feet �� �� ��,,,,, ,�,w„ <br /> 2. Depth of percolation tests= � � ��� ''""' `"'°'' `""'"''" "�"� <br /> ��� Percolation rate '�• '? m i '�~ �� �� � <br /> 3. Texture _ P �,��� � � � <br /> 4. Land slope a -�l % <br /> D. R K LAYER.D Z <br /> 1, Multiply flow rate by 0.83 to obtain requised area of rock layer. A x 0.83 = <br /> �_Spd x 0.83 sq. ft./gpd = �- ' sq. ft. <br /> 2. Select width of rock layer(max �.0' if <120 mpi max 5') _ �_ft. <br /> 3. Length of zock layer�azea+width= � � » .� <br /> �. . <br /> . �_�_ � _ ''�� � . `,��, '. �� �: <br /> sq. f� + ,,_;�, — <br /> . �. � <br /> . , <br /> Width f0 � ft � � . <br /> � <�20mpi <10' �n�-�� fr <br /> >1.20mpi <5' <br /> E. ROCK VOLUME <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; i y.jsq. ft x .�-�� � <br /> ft. - ��1 cu. ft. <br /> 2, Divide cu. ft.by 27 cu. f�/cu. yd. to get cubic yards; <br /> '�cu. ft. +27 =.�,cu. yd. <br /> 3. Multiply cubic yazds by 1.4 to get weight of rock in tons;�.�� .cu. yd. x 1.4 <br /> ton/cu. yd. = y� tons. <br /> F. ABSORPTION WIDTH Abeorpdea VN1dLh St�Tyb1e <br /> 1. Percolation rate in top 12 inches of soil is 4.'7 mpi ���,m ��Taan ��' ��"�i' <br /> Texture �L��( �-��a�ti-� c��i �.� �,.�� <br /> Pawn dua 0,1 CorM S�ed I.20 1.00 <br /> a�w s :,�w i.�o i.00 <br /> . 2. Select allowable soil loaciin rate fxom table; a�p� �a� °•� i�o <br /> 8 6 a l! Saeer L.erw 0.�9 I.S2 <br /> ��_ $Pd/� � ii»�s st�t�".e.A o:s60o i,�o <br /> �a p eo cz.r�,o..� o..�s z.a� <br /> 3. Calculate adsozption width ratio by dividing rock layer �'°'""°"'t2D `�'' °�0 a�0° <br /> loading rate of 1.20 gpd/ft2 by allowable soilloading rate; <br /> 1.ZO.gpd/f�+�-�gpd/�� : a ,`"� • <br /> 4. � Multiply adsorption width ratio by zock�layer width to get <br /> xequired adsozption width; <br /> a.c�� x /=�^��.� ft <br />