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Solid Unreinforced Masonry Pier

Solid Unreinforced Masonry Pier

Solid Unreinforced Masonry Pier

(OP)
I have a 32"x32" grouted unreinforced masonry pier that is 48" tall. The resultant load is very much outside of the kern. Kern is 5.3" and my eccentricity is 8". Is it possible to analyze the pier similar to an eccentrically loaded footing where the resultant is outside of the kern? I would like to ignore flexural tension stresses, so my effective section would be the "3a" dimension. I don't see anything in the ASD chapter of ACI 530 that discusses eccentricities outside of the kern.


"It is imperative Cunth doesn't get his hands on those codes."

RE: Solid Unreinforced Masonry Pier

How much load?

RE: Solid Unreinforced Masonry Pier

(OP)
80 kips coming from an W21x57

"It is imperative Cunth doesn't get his hands on those codes."

RE: Solid Unreinforced Masonry Pier

MacGruber22:
Would it work as a 24x24 or 20x20 pier centered under the load, and within the 32x32 pier? If so, it should be o.k., as long as there is no great lateral load at the top.

RE: Solid Unreinforced Masonry Pier

That is how I normally look at it

RE: Solid Unreinforced Masonry Pier

I guess the mortar joint will crack to the point the point load falls within the kern <G>. As long as the top of the pier has lateral resistance (from the loading, if necessary) you should have no problem.

Dik

RE: Solid Unreinforced Masonry Pier

Thats alot of load and a serious member for new rebar... i do the same as others and see how little do i actually need to work

RE: Solid Unreinforced Masonry Pier

(OP)
Yes, the existing pier works as suggested. Thanks!

"It is imperative Cunth doesn't get his hands on those codes."

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