4 bay garage auto repair shop rusted columns

[lubos1984]

Good Evening everyone!
rusted column bases at front garages. not sure why the foundation wall is not above ground. Looks like column are embedded into the slab. Middle columns have rust eating away. Not sure if a localized repair would suffice ? Any thoughts ?
Thank you

 

[lubos1984]

could the repair go as follows. I found a suggestion from a similar situation on this forum:
shore the structure, remove concrete around base of column, cut off deteriorated section of column, weld baseplate to bottom, embed reinforcing steel into existing concrete and cast a concrete pedestal into below footing to extend up to the new baseplate elevation. shim and grout underside of baseplate and then remove shoring.

 

[jayrod12]

Seems like you found your answer. I believe that's a reasonable repair.

 

[lubos1984]

thanks jayrod.
to create a concrete pedestal would mean it would be wider then the current column ? that would create an issue in the bay doors since the door is flush against the column

 

[jayrod12]

You could just replace the damaged portion of column and then apply a thick bituminous coating on the bottom segment to protect it from splash.

 

[EdStainless]

Does this happen to be far enough north that salt and slush get piled against these?
A raised pedestal is the only sound option.
Make sure that it is shaped to be self-draining.

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[XR250]

Maybe weld some partial height channels on two sides of the column bearing on the concrete?

 

[gte447f]

There are several alternatives, as suggested above, with varying levels of durability/lifespan. All are viable options, including burying the repair in concrete below grade, similar to the original construction. Obviously that repair will have a similar lifespan to the original construction and will eventually have to be repeated again. Adding bituminous coating sounds like an improvement, and adding a concrete pedestal sounds like a further improvement, but may adversely affect building function.

 

[MIStructE_IRE]

Just as an aside - I’m curious to know how that masonry over the glazing is connected to the steel column? It doesn’t look like there’s a beam? Even if its a reinforced U-Block how is that connected to a steel column?

Sorry - just curious!

 

[IRstuff]

Looks like that crevice is partly to blame, since it allows for standing water to stay in contact with the column, which might be why the rust appears to be primarily on the front side. Adding a drainage channel to each column would seem to be a must, if the configuration remains unchanged

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[gte447f]

Perhaps if the column bases had been completely incased in concrete they would have lasted longer. Note that they have rusted through only on the exposed side where the concrete and steel abut the joint with the asphalt.