any problems here?

Hi there,

doing some remodeling on a house that i have and i was wondering if you guys can find any problems in this plumbing that i've done.

1-pic....it's a toilet on the second story and the 2" vent connects through a y
2nd pic...it's a shower upstairs that connects to a combo T instead of a sanitary T....i was wondering if it's acceptable
3rd pic ---it's a tub upstairs and the 2 inch vent at 3 ft

any inputs are very much appreciated...

Thanks so much

3rd pic
Joist looks totally cut in half.
Santee for vent can't be on it's side and have it in wrong direction.

If that is a vent it can't be run flat either.

Dwv

#1. flat vent
#2. MUST be a sanitary tee/
#3. Flat vent and backwards sanitary tee. Many inspectors would require it to be a "Y" or combintion fitting.