i was called out yesterday from a new costruction plumbing company i do drain cleaning for, plugged toilet, lav, floor drain in new office building. plumber chipped out concrete into drain than set toilet flange. plug was 4' from closet bend small pieces of concrete and a.b.s. i pushed through with spade bit. the plumber put a 3" tap tee behind the water closet, and it went to 4" after about 10' about 56' down the line it tied into the top of a combo there was a small belly at the combo so all the concrete pieces settled there because of the 3" i couldnt get a big enough head down, and there was only the one w.c. on the line so i couldnt get alot of water behind. i ended up using my camera with the guide to push each piece of concrete out of the belly and into the combo where i could dump a kitchen sink and 4 water closets to flush down the line. i dont have a jetter but what have you guys done to clear the debri?
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concrete in line