Adding On To Mislocated Column
Adding On To Mislocated Column
(OP)
I have a few concrete columns that were poured from 3" to 10" off from their specified location at their lowest level (footing also off by same amount) due to some issues with the surveyor. They are only off in the x direction.
The contractor does not want to chop and replace. As an alternate to removal they would like to add on to what is there. Any issues with this?
My initial thoughts:
- I don't want to add a few inches, so I'm thinking of a 12" min. width that is reinforced and tied like an independent column. In addition to the closed ties I will drill into the existing column to brace 12" to full column.
- I need to drill and develop the new bars into the footing.
- There are interior and 'short' columns, no appreciable unbalanced moment.
- I will end up with original size/reinforcing + a scab that is 12" x column height so much more overall area and reinforcing.
- I do not see the two as needing to act compositely
You'd end up with the column above sitting say 80% on the 1st placement column below and 20% on the new 12" column that is braced to the 1st column.
Any issues?
The contractor does not want to chop and replace. As an alternate to removal they would like to add on to what is there. Any issues with this?
My initial thoughts:
- I don't want to add a few inches, so I'm thinking of a 12" min. width that is reinforced and tied like an independent column. In addition to the closed ties I will drill into the existing column to brace 12" to full column.
- I need to drill and develop the new bars into the footing.
- There are interior and 'short' columns, no appreciable unbalanced moment.
- I will end up with original size/reinforcing + a scab that is 12" x column height so much more overall area and reinforcing.
- I do not see the two as needing to act compositely
You'd end up with the column above sitting say 80% on the 1st placement column below and 20% on the new 12" column that is braced to the 1st column.
Any issues?






RE: Adding On To Mislocated Column
RE: Adding On To Mislocated Column
RE: Adding On To Mislocated Column
RE: Adding On To Mislocated Column
RE: Adding On To Mislocated Column