Need advice on wet vent plumbing for bathroom changes

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Monte435

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I am expanding an existing bathroom. The current bathroom has a wet vent (2") with a single sink, a shower and a Toilet. The new layout will have dual sinks, tub, shower, and toilet. I am moving the toilet location. Single story house on concrete slab. Located in Florida IPC code. Main line is 3". Lines to shower and tub are 2". The location I am moving the toilet to happens to run almost directly over the main horizontal drain line. I am wondering if I can tie this in with a Wye and a 45 directly up to the toilet? Will I have any issues with the toilet siphoning the tub or shower traps? Drawings attached

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Monte435

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Also, since the WC is directly over the
IMG_2300.jpg
horizontal line, I also need to know if this orientation of the WYE+1/8 is ok or if it will cause clogging issues. I get conflicting info from different online sources.
 

Monte435

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8a12830d01ec4c78_6024-w240-h180-b0-p0--.jpg





or do I need to use this type of orientation and move the toilet away from directly over top of the line
 

wwhitney

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Conventional wisdom is that the second picture is better. I believe the first picture is allowed. I don't know if there's a performance difference.

Cheers, Wayne
 
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