Circuit venting question

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JayAre1990

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Hey guys, long time lurker, first post. Sorry for the terrible drawing, but im just wondering if this bathroom group is properly circuit vented, it one water closet, a tub, a shower and two lavs. The dotted lines are the vents. Any corrections are appreciated. Im in Alberta btw.

20130418_232329[1].jpg
 
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Ontario Plumber

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Would probably be easier to wet vent everything upstream of the toilet, providing you have room for a 3" pipe. Run 3" upstream of the toilet, all the way to the double tee wye of the 2 basins. A 3" wet vent serving a toilet can take up to 8FU (fixture units). Bathtub (1.5) + shower (1.5) + 2 basins (1 each) = 5FU
 

frodo

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run a 4" trunk line, up to the 4x3 y with 3" stubbed up in the wall between the sinks. with a 3" vent
and bring a 3" stack vent up in the toilet wall to serve the trunk line revent the 3" sink vent back into the 3" vent stack

P7050756.jpg



disregard the 2" on the sink vent....supposed to be a 3
I am assuming this is a commercial bathroom
 
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