fixing a steel console with only 2 anchors? 3

[n3jc]

I have to fix a steel console into existing RC beam. Console is supporting a steel canopy beam.
Since RC beam is 250/300 mm I m very limited about how to destribute anchors. I have to consider minimum edge spacing from the edge of concrete and between anchors. So I came up with this:

Normally Id use more than single line of anchors, but in this case forces are small so I think it is OK. Calculations shows that 2 anchors are more than sufficient bu I still feel somewhat uneasy because I have only a single line of anchors. Id add another line but since RC beam is only 300 mm high, I have a problem with steel beam since it shouldnt be too high above the RC beam.

 

[bones206]

The AISC Steel Construction Manual assumes the beam reaction is applied at a distance of 80% of the bearing length (0.8W) from the face of the support for stiffened beam seats. I actually worked on a project with dozens of beam seat connections already installed in the field that were designed assuming an eccentricity of W/2. When someone pointed out the 0.8W requirement, all of the beam seats had to be re-evaluated and a few required reinforcement in the field.

That being said, I think assuming that it's acting at the edge is appropriate and conservative when you have a stiffener.

 

[n3jc]

This has become quite a thread

tnx for replies/help!

regards

 

[dik]

KootK... the fourth posting...

Dik

 

[KootK]

What about the fourth posting dik? You mean your recommendation to flip the angle? I was backing you up on that with my latest.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.