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Masonry buckling check for irregular section

Masonry buckling check for irregular section

Masonry buckling check for irregular section

(OP)
I have a stone masonry pier that is very tall (on the order of 50' unbraced), but it's not a wall section. It more resembles an angle.  I don't believe the standard equations out of ACI 530 are applicable to this section, specifically for a torsional buckling mode.  

How would you go about doing a check on this? My first pass was to look at only the one leg to equate it to a wall, but the severe cracking suggests a torsional behavior, so I'm really at a loss on how to proceed.

RE: Masonry buckling check for irregular section

I would probably use the equations from ACI 530, but use the r-value for the minor principle axis

RE: Masonry buckling check for irregular section

at the tip of the L the wall is behaving as a plain single out of plane wall.

RE: Masonry buckling check for irregular section

(OP)
Ash-
I didconsider that and will probably go down that route for my next check. I'm still concerned about the torsional aspect since the crack pattern definitely suggests that behavior.

csd-
that was the thought behind using just the wall as the initial buckling check, but the torsional component has me thinking that is only a good starting point.

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