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. P49e 3 6( ? <br /> An observation pipe may serve as a combination observation/vent pipe providing it terminates in the <br /> same manner as required for vent pipes. See Figure 6. • <br /> Veal .. . Retort,Yontt . • <br /> Ir*:d4:' <br /> 12'milt: .11a31-iiiE. .. . . <br /> III A9•Gro 9*t* ' 6Ist Ibtrdan lateral <br /> Sp:inm.devstion <br /> Watertight cap <br /> Mai 4"min.dia.-:-___, <br /> Slog6" <br /> • <br /> 6"min. min. <br /> • <br /> Infiltrative surface--' 7 4 <br /> Water Closet Collar \Bar(3/8"min.dia.) <br /> Observation pipes <br /> pn/e oh5P,' vCiTro <br /> IP'p,SJ'c". will al So b e <br /> 4....) <br /> ■ ' Ad.( I U e n•-/' 'Z.. l a'/ a bo,.e ft-4A! <br /> I 7'i/14e-4 ef‘Yill <br /> f <br /> ii = , m-ss, -I (<- <br /> T <br /> . <br /> y7r <br /> G,,i, - , <br /> `trc '(b <br /> F I.e t ICY <br /> Li/ iiiirdimmi 1, <br /> .I w,, <br />