ACI 318-14, §15.3 - Transfer of column axial force through the.... foundation

[ferrarialberto]

Hi to all,
in chapter §15.3 of ACI 318-14 are present rules about the transfer of axial force of column through the floor system, when the compressive strenght of concrete are different for more than 40%. The same rules have to apply also in column to foundation joints?

Thank you in advance.


eng. FERRARI Alberto -

http://www.ferrarialberto.it

 

[manstrom]

I don't see why not.

When I am working on a problem, I never think about beauty but when I have finished, if the solution is not beautiful, I know it is wrong.

-R. Buckminster Fuller

 

[KootK]

I think that it's simpler at a footing. It's just straight up bearing and punching shear with some account given to the load transferred via the column rebar dowels.

I feel that it's a bit of a different situation, mechanically, when you're transferring load to a load spreading system like a footing as opposed to passing the load to another column below. Certainly, I'd ensure that bearing worked at the column/footing interface even f'c_coulmn < 1.4 x f'c_footing.

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.

 

[manstrom]

Ohh. At the footing. I don't think it's an issue as long as bearing is satisfied.

I do recall seeing an example problem where they developed the compression rebar into the footing.

When I am working on a problem, I never think about beauty but when I have finished, if the solution is not beautiful, I know it is wrong.

-R. Buckminster Fuller

 

[ferrarialberto]

Ok, thanks.
I think that §15.3 chapter is not applicable to column-foundation section but I have some doubts about this problem...

eng. FERRARI Alberto -

http://www.ferrarialberto.it