Concrete Column with Embed Plates

[Guastavino]

So I've been studying ACI 318-08 App D all day on this particular situation. No examples to be found as I search and search for a concrete column with embed plates. As I understand I need to check Vcbg, but I get to multiply by 2 (Per D6.2.1(c)) since the only load is the 120k Shear load (LRFD level) is parallel to the nearest edge. That yields only about 30ish kips of allowable load for quite a robust embed plate. Now, I can of course use the D6.2.9 anchor reinforcement, but I can't really fathom what the failure plane would be for a column embed like this, thus I don't know what rebar to develop.

To me Vcbg doesn't make sense for a column like this. Pryout check makes sense (but even then stirrups help prevent that), and when I check that I get 127.5 kips of capacity.

Anyone encountered this before and have thoughts?

 

[Celt83]

Thinking more you'd probably get a failure surface closer to the red line for shear break out.

Open Source Structural Applications:

https://github.com/buddyd16/Structural-Engineering

 

[Guastavino]

Folks this is great stuff...thank you to all...

I have this “condition” in several locations but much lower loads, more like 60 kips. I am inclined to either extend the beam to bear directly on the column, or just frame the beam into the column. I lean towards framing into the column to simplify the connection...

 

[Archie264]

Ya know, discretion may be the better part of valor on this one. Even if we can prove, with all this rocket surgery, that that the anchor embeds work…well, let’s just say that that some sidewalk superintendents might not get a warm fuzzy about it holding a W30…