Concrete Shear Angle

[shrews34]

We currently have a project which requires framing new concrete grade beams into existing foundation piers. I am thinking about using a structural steel angle connected to the existing concrete pier with Hilte's Adhesive Anchor System to transfer the shear from the pier to the grade beam. Has anyone used this method?

 

[WillisV]

If you are just transferring shear just drill and epoxy new rebar dowels into the existing footing and cast them in with the new grade beam.

 

[haynewp]

WillisV

Wouldn't the interface at least need to be roughened to use shear friction? In other words, I have never just used rebar to transfer shear, but in combination with a rough surface.

 

[JAE]

Both work - just a different [λ] factor right?

 

[haynewp]

That's right. 0.6 lambda vs 1.0 lambda.

 

[WillisV]

I would hazard a guess that the sides of the existing footing are probably pretty rough to begin with but certainly you can abrade it a bit if you so desire...