On Apr 24, 9:35*am, "Dave in Houston" wrote:
you must support wall on both sides before removing.. temporary walls.

* * You don't. *Here's the way we do it:http://www.pbase.com/speedracer/image/2622653

Set your beam in the attic space directly over the existing wall. *Bolt all
your ceiling joist to the new beam as in the photo.
Tear down existing wall - nothing moves.

Dave in Houston

Dave-

That is a pretty cool design concept to replace a wall with a beam.

But the joists will move downward until the beam deflects enough to
take the load that the wall was supporting.....depending on the beam
sizing & the ceiling load (actually in this case, the 2nd story floor
& ?). The deflection at mid span could be in the 3/8 to 1/2" range.

Plus in the OP's I'm pretty sure that your concept would place the
beam on the floor of the 2nd story.

But still a neat concept.

cheers
Bob