Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

RE: Braced Basement Wall with Composite Floor

[Subject Prev][Subject Next][Thread Prev][Thread Next]
I would suggest that along the sides of the wall where the beam framing is parallel you eliminate the beam and bear the slab directly on top of the wall tying the same together with dowels by casting the slab (minus the deck) on top of the wall. Likewise where the framing is perpendicular, tie the slab edge into the top of the wall continuously. The horizontal shear capacity of the slab should easily check for the magnitude of load you indicated below. Be sure that you include a note on your drawings that the wall should not be backfilled until after the slab is cast and obtains adequate strength.
Matthew Stuart


From: Will Haynes [mailto:gtg740p(--nospam--at)]
Sent: Tue 5/23/2006 6:44 PM
To: seaint(--nospam--at)
Subject: Fwd: Braced Basement Wall with Composite Floor

I have a 15 ft tall basement wall I am trying to brace with the second floor. The basement is surrounded on all sides by the retaining wall. The second floor is composite steel (2.5" stl deck w/ 3" conc) with composite steel beams. The second floor area is about 80ftx80ft, office construction. 
The reaction at the top of the wall is more than I have dealt with before (4.6 kip/ft). I have W16's attaching to the wall at 8ft and am stiffening the slab with infill beams where the main ones run parallel to the wall. I am trying to get a feeling about the behaviour of the composite floor under this kind of axial, and calculate what I can. The max span of the floor I have right now is 8ft between stiffeners. Does anyone have experience with bracing a wall this size with a composite steel floor? 
Will Haynes