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?or 3di.7 <br /> An observation pipe may serve as a combination observation/vent pipe providing it terminares in the <br /> same manner as required for vent pipes. See Figure 6. <br /> • <br /> • <br /> /eat - alOifA , 3 <br /> - [I IistrIbutloa lateral <br /> _Syftera.tleva on <br /> Water tight cap <br /> 4"min.dia: <br /> Slot I <br /> 6" <br /> 6"min: 111 min. <br /> Infiltrative surface <br /> Water Closet Collar Bar j318"min.dia.) <br /> Observation pipes <br /> owe ohsP,- vet f-,o <br /> // ez j,e,.41.4-forsi <br /> will a l 5o be <br /> el 1e <br /> ■ 'lad' ■ tit'.,1� �. (.211 a be,re -4 cof <br /> a <br /> ■■�■ aina3 P`� • -31 6 1+ <br /> • <br /> u Ott' <br /> • <br /> juI ;1 <br /> w <br /> ��, - i --� <br />