Steel local failure mechanism in beam pockets that are grouted solid

[mbstruct]

In typical steel beam pockets into concrete or masonry walls, the void is generally grouted solid. AISC commentary mentions that web crippling equations are generally conservative because the tests used to derive the formulas were conducted on bare steel beams without the expected beneficial contributions of any connection or floor attachments. I would imagine the grout filled pocket would provide quite a bit of restraint to prevent the web crippling failure. With that said, for steel beam pockets that are grouted solid, what do you generally consider to be the controlling steel failure mechanism?

 

[phamENG]

Bearing - steel bearing plate on concrete/masonry is most likely, but you can check steel beam on steel bearing plate bearing as well.

 

[milkshakelake]

You can assume that the grout doesn't exist for web crippling because web crippling/yielding probably won't control, so it won't make a difference in the end. But you can run the calculation. I have bearing plate and web crippling in one spreadsheet so it's zero extra effort to calculate it, and pretty much always the bearing will fail before the web crippling, at least for the sizes I use.