BeanAnimal
Premium Member
I would build the wall and leave the space open for ceiling grid maybe.
If not attach 2x4 down supports to the jousts to support false ceiling framing that ends flush with the duct work (between the beam and the duct.
Set you wall the the left of the vent pipe as usual and attach a 2x4 runner (parallel with the pipe/duct) to screw the ceiling sheets of drywall into. You can use construction adhesive to attached the drywall to the duct if you feel that the span is too far without support. So in essence pic two with a lowered ceiling frame between the duct and beam (hung from joists) and your wall to the left with a nailer attached to accept the ceiling drywall.
If not attach 2x4 down supports to the jousts to support false ceiling framing that ends flush with the duct work (between the beam and the duct.
Set you wall the the left of the vent pipe as usual and attach a 2x4 runner (parallel with the pipe/duct) to screw the ceiling sheets of drywall into. You can use construction adhesive to attached the drywall to the duct if you feel that the span is too far without support. So in essence pic two with a lowered ceiling frame between the duct and beam (hung from joists) and your wall to the left with a nailer attached to accept the ceiling drywall.