Add tub in walkin closet next to shower

[rtolliv2]

Hello all,
I am converting my mast bedroom walkin closet as an extension to my exiting bathroom area. I already have a toilet and vanity in the same area with a shower. The shower next to the wall of the (hopefully) converted closet. I would like to add a free standing bathtub. Does the bathtub have to be elevated for drainage into the shower return and does the floor have to be reinforced to handle the weight? Does anyone see a pending disaster? Thanks for all replies.

 

[johnjh2o]

The tub must have its own trap and vent. The floor should be OK to handle the weight of the tub.