Masonry bearing wall, supporting steel beam, joist, post...
Masonry bearing wall, supporting steel beam, joist, post...
(OP)
What is the typical connection "style" for attaching a steel beam, steel open web joist, steel posts, etc... to a masonry bearing wall.
I was under the impression it typically involving a bearing plate bolted or welded to the "to be supported" member and then that plate being bolted to the wall via anchor rods, expansion bolts, etc... Recently, an technique was brought to my attention of embedding a steel plate into the wall and the bottom of steel elevation and the beam/joist/post could be welded directly to that plate.
Also, if the wall is not fully grouted, should a bond beam be used at the top course (directly beneath bearing elevation) and/or fill the top 3 courses of block solid to help distribute loads?
Obviously I am a novice with masonry design...
I was under the impression it typically involving a bearing plate bolted or welded to the "to be supported" member and then that plate being bolted to the wall via anchor rods, expansion bolts, etc... Recently, an technique was brought to my attention of embedding a steel plate into the wall and the bottom of steel elevation and the beam/joist/post could be welded directly to that plate.
Also, if the wall is not fully grouted, should a bond beam be used at the top course (directly beneath bearing elevation) and/or fill the top 3 courses of block solid to help distribute loads?
Obviously I am a novice with masonry design...






RE: Masonry bearing wall, supporting steel beam, joist, post...
Dik
RE: Masonry bearing wall, supporting steel beam, joist, post...
The contractors seem to preferr this as it is easier to shim and level up the plate when it is just the plate, than when the plate is attached to the beam, and you you have to fight the weight of the beam in the process of shimming/leveling.
RE: Masonry bearing wall, supporting steel beam, joist, post...
This allows you to set the plate with studs without interrupting the construction process.
Dick
RE: Masonry bearing wall, supporting steel beam, joist, post...
If continous plate, how do you account for the discontinuity of the wall at this elevation, or if the plate is not the full width of the wall, you dont need to worry about it? This would be referring to mid-level floor joists with the wall continuing up to higher floors.
Sorry so many questions...not too many references at my disposal.
RE: Masonry bearing wall, supporting steel beam, joist, post...
RE: Masonry bearing wall, supporting steel beam, joist, post...
Dik
RE: Masonry bearing wall, supporting steel beam, joist, post...
As far as floor joists, I would not use a continuous plate. Typically a 5/8" plate roughly 8 or 9 inches long. Even if the joists are spaced at 24" o.c.
If you have a floor joist application, depending on the elevation of the floor I sometimes specify a continuous angle bolted to the inside face of the masonry with stiffener plates every so often. Then the floor joist is welded to the angle.
Like planitarch recommended try getting a copy of the Masonry and Steel Detailing Handbook. It is a very good reference.
RE: Masonry bearing wall, supporting steel beam, joist, post...
RE: Masonry bearing wall, supporting steel beam, joist, post...
Dik
RE: Masonry bearing wall, supporting steel beam, joist, post...
You should have additional filled cells, a masonry column or a concrete column at all your point loads. You should have a bond beam at your diaphragm levels. These will function as providing something to hold embeds and diaphragm anchors. The steel in the bond beam can function as the chord reinforcing for your diaphragm as well as the flexural reinforcing as a beam when you have uplift.