tclat
Structural
- Oct 28, 2008
- 109
Hi,
I have been hired by a contractor to explore options to widen and existing footing.
The contractor cast the the column eccentric to the footing. 12x12 r/c column on 5x5 footing but 1 foot from the edge. Bearing pressures now exceed allowable.
One option is obviously to demolish and another to underpin although I'm not to keen on this option.
I was considering another option of casting a jacket around the existing column (say 5" around) and attach the two with epoxy dowels. I would then consider pouring a new footing over the existing footing and with the the reinforcment in the "jacket" embedded in the footing. This new footing would now be centered on the column. I would also have to expoxy dowel the new footing reinforcing bars into the existing column.
Has anyone seen this type of detail before? Any other options?
Thanks
I have been hired by a contractor to explore options to widen and existing footing.
The contractor cast the the column eccentric to the footing. 12x12 r/c column on 5x5 footing but 1 foot from the edge. Bearing pressures now exceed allowable.
One option is obviously to demolish and another to underpin although I'm not to keen on this option.
I was considering another option of casting a jacket around the existing column (say 5" around) and attach the two with epoxy dowels. I would then consider pouring a new footing over the existing footing and with the the reinforcment in the "jacket" embedded in the footing. This new footing would now be centered on the column. I would also have to expoxy dowel the new footing reinforcing bars into the existing column.
Has anyone seen this type of detail before? Any other options?
Thanks