Masonry steel connection?

[SteelPE]

Does anyone have a good connection to attach a masonry wall to a steel beam?

The masonry wall is an interior partition wall. Masonry wall was selected in this location for its durability. The building is steel framed with concentric braced frames being used to resist lateral forces. We are using IBC 2009 and ASCE 7-05. I only need to stabilize the wall against typical partition pressures and prevent the wall from falling over during a seismic event. My calculations indicate a load of approx 120plf for attachment back to the steel.

 

[charliealphabravo]

Never had to design this connection but something like this might work. You could use either wood blocking behind the beam or a half height stiffener/spacer welded to the beam. Then the bolts could be through bolted or grouted into the masonry bond beam depending on what gets built first. Also you will probably need a slotted hole in the beam to isolate it from the wall. Space bolts according to load. I'm sure 8' to 10' would work for only 120 plf.

 

[jvvse]

Sorry I can't draw any sketches atm.

Just use a shear tab for the steel beam anchored to the wall. Welded plates or a WT with flanges anchored to the wall, either post-installed anchors or cast-in-place if it's a new wall, and a shear tab with bolts for the W beam.

 

[JLNJ]

Have a look at your beam deflection. The most difficult thing about these details for a partition wall is to allow the beam to move vertically, yet still provide the wall's lateral stability.

 

[charliealphabravo]

I don't see how shear tabs can work with post-installed adhesive anchors. Isn't access to bolts between the wall and the beam the problem?

 

[azcats]

Any way to 'capture' it with space above like you would a steel stud wall at roof framing? It wouldn't have to be continuous provided the wall spans horizontally between.

 

[SteelPE]

The typical detail I use is clips welded to the bottom of the beam with post installed anchors in vertical slots to allow for beam deflection. I am trying to avoid this detail as it is a costly to install. I seem to remember using an adjustable anchor welded to the web of a beam and installed by the mason years ago but I can't seem to find the detail anywhere.

 

[msquared48]

I would bolt or weld an angle with the vertical leg turned down to the bottom flange of the W shape, and after-set bolt to an 8" bond beam at the CMU wall, with a vertical slip joint for the after-set bolts at the wall face.

Mike McCann
MMC Engineering

 

[wannabeSE]

I have seen connections similar to msqaured48's suggestion. But with higher loads and kickers from the bottom of beam to the diaphragm.

Is this new construction, or is it existing? There is not much room between the beam and the wall for a connection
Is a fire rated detail required at the top of the wall to deck? Do the beams have fireproofing?
Is the face of the wall opposite the beam architecturally exposed?
Is there a bent plate at the slab edge?
Is story drift a concern? If yes, a slip connection in-plane may be required along with the slip connection for beam deflection.

 

[haynewp]

I use the same as msquared.