Column Reinforcing
Column Reinforcing
(OP)
We are working at a condominium along a beach. Reinforcing a pool deck that has seen far too much corrosion from the elements. The pool deck intersects with the main building at a balcony. We have to replace the balcony spandrel beam, but want to avoid replacing the balcony columns as they support other spandrels, and an interior girder for 4 stories and a roof. Our first thought was to just grind back to bare metal and cover plate, even if it needed to be on all four sides. However, we got started grinding back to bare metal and found that the flanges are fairly thinned out and the web is corroded completely through in some locations.
The question is - should we cut our loses and replace the column? Does someone have any other ideas for reinforcing that would develope into what is left of the exist column.
See the attached picture.
Thanks,
Andy
The question is - should we cut our loses and replace the column? Does someone have any other ideas for reinforcing that would develope into what is left of the exist column.
See the attached picture.
Thanks,
Andy






RE: Column Reinforcing
RE: Column Reinforcing
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RE: Column Reinforcing
RE: Column Reinforcing
RE: Column Reinforcing
RE: Column Reinforcing
RE: Column Reinforcing
Concrete, concrete, concrete.
RE: Column Reinforcing
RE: Column Reinforcing
RE: Column Reinforcing
Steel column. No concrete. Look at his picture.
RE: Column Reinforcing
"I always thought the high pH of concrete provided some corrosion protection for any steel reinforcement. "
Yes, provided there is adequate concrete cover and quality to prevent the chloride ions reaching the steel over the design life.
RE: Column Reinforcing
1. Box in the I section with plates to effectively replace the web and restore the original section. This requires that there is enough flange steel remaining for welding.
2. Clean the column and encase it in reinforced concrete. This also provides opportunity to epoxy dowel rebar to replace deteriorated anchors.
In response to the corrosion discussion, either steel or concrete should have protective coatings applied in corrosive environments for maximum service life.
RE: Column Reinforcing
Andy