Missing Anchor Bolt Repair
Missing Anchor Bolt Repair
(OP)
Despite the shop drawings indicating that only select columns could have the anchor bolts epoxied, the contractor left them out of all the pile cap pours, save one.
Unfortunately, with the tension and shear at the base of the columns, epoxy anchors will not work as a "replacement" for the cast-in-place anchors.
Does anyone have any "non-traditional" repair/replacement ideas for the missing cast-in-place anchor rods?
Unfortunately, with the tension and shear at the base of the columns, epoxy anchors will not work as a "replacement" for the cast-in-place anchors.
Does anyone have any "non-traditional" repair/replacement ideas for the missing cast-in-place anchor rods?






RE: Missing Anchor Bolt Repair
Mike McCann
MMC Engineering
RE: Missing Anchor Bolt Repair
RE: Missing Anchor Bolt Repair
RE: Missing Anchor Bolt Repair
If I try to use the existing base plates, my edge distances are not adequate for undercut anchors.
RE: Missing Anchor Bolt Repair
RE: Missing Anchor Bolt Repair
Probably won't like that either...
Perhaps Ron could recommend a good epoxy to use to bond the plate to the concrete?
Mike McCann
MMC Engineering
RE: Missing Anchor Bolt Repair
Unfortunately, we are building over an existing structure, many obstacles and beam depth restrictions and very few convenient places for columns.
As a result, my braced frames (which are tall and somewhat narrow), on the end walls, have very little dead load in some instances.
I would have liked to have braced my frames in the opposite direction, where they would have had more dead load, but the Owner had some crazy requirement about keeping their doorways open.
One column has 62K Tension (LRFD) and 51K Shear.
RE: Missing Anchor Bolt Repair
Mike McCann
MMC Engineering
RE: Missing Anchor Bolt Repair
RE: Missing Anchor Bolt Repair
RE: Missing Anchor Bolt Repair
RE: Missing Anchor Bolt Repair
Tying to existing columns is not for the faint of heart, that is for sure.
I think he is grasping at straws.