Quick Baseplate Thickness Check

[IreStruEng]

Hi folks,

Don't have much experience in baseplate thickness design but looking to run this by a few more experienced eyes as a quick check. Would usually check this sort of thing in Hilti Profis but wanted to verify by hand.

Would it be acceptable to approximate the baseplate to two beams as I have done here. And what do you think of my estimation of what the width of those beams would be?

 

[HTURKAK]

-Your approach for biaxial bending check is not correct. The formula you have proposed is for the biaxial bending of the columns. Proposed beam B width 2t could be assumed 6t.

- Can you shift the anchor locations to the right end?
- I will suggest you , to develop a FEM to check the thickness.

 

[canwesteng]

What you have looks to be a conservative approach for both the beam widths and unity checks. You could go with a yield line approach and get a lot more capacity and still have it as a hand calc

 

[CDLD]

I think the way you broke up the load path makes sense and should be conservative.

If you need more capacity, I would think you can use a wider beam A. Perhaps flare out at 45 from the center of column.

There is no biaxial bending at point A - you have normal stresses in orthogonal directions, which means you can check this using Von Mises Criterion.