wwhitney
In the Trades
Yes, I didn't quite grok until now that the tub comes with a drain that you need to use, and that it is intended to be installed with a brass nut that you tighten from underneath. Meaning that part has to be installed before dropping the tub in.See most recent post, re type of drain in tub- the 1st paragraph.
In the second photo of the thread, what's going on with the wall framing shown, and will there be access to the area behind that framing after the tub is set? If so, then how about this idea:
Figure out a final connection geometry that has a no-hub coupling right next to the san-tee (with a short nipple) below the bottom plate, and that has no slip joint connections. Remove some of the bottom plate and (hopefully only a little) concrete as required so that after tub setting, you can reach the no hub coupling from the other side of the wall framing. Preattach the trap and trap arm to the tub, with the no-hub coupling on one side of the joint, folded back over itself, with the banded cover slid onto the trap arm. Set the tub, make sure the nipple and trap arm are lined up and the ends are tight to the rubber, unfold the coupling, slide the banded cover over, and torque to 60 psi.
Cheers, Wayne