Two bathroom groups, is this correct?

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mim

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Hello,
I am renovating my home by adding back-to-back bathrooms on the second floor. I have asked a plumber to do the plumbing. He came one afternoon and then he disappeared (after the first payment), and now I cannot find him :( . I am thinking to finish the job myself but I am worrying that he may have done something wrong. The following diagram shows the current plumbing:

1- He used "wet vent" for the 2 bathroom groups: and said toilets must be the last fixtures, but since "Lav1" will have its own vent , this would not be a code violation to have lav1's connection after Toilet2, is that correct?
2-For the "Horizontal to vertical" on one branch he used a regular 90-degree elbow, and for the other branch he used a long sweep elbow, Both branches are connected to 3" Wye in the vertical waste line. I asked him about the regular 90 degree and he said since it is used for horizontal to vertical, it is ok, I am wondering if that is correct for Wet venting/double toilet as well?
3- To make the toilets be the last fixtures, he has used a 7ft pipe for Toilet2, is that ok or any limit on its length?


Any help is highly appreciated, thanks.
 

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Last edited:
Looks ok, I wouldn’t have installed the closet flanges before the subfloor and finished floor. Never......
 
What didn't he finish?
vent for Lav1 (I need to cut the vertical vent as he has forgotten to put any connection for Lave1 vent and kitchen sink vent (he connected the vent directly to the roof)
, pipe between tub2 and vertical vent(too roof): that has not been connected yet
rough if for Lav1

checking the slopes
 
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