Concrete Anchors Damaging Rebar?
Concrete Anchors Damaging Rebar?
(OP)
Colleagues,
What are your thoughts regarding installing concrete anchors into existing structural concrete? I fight this battle on a frequent basis, that is, I don't like anchors installed in the proximity of tension steel. The pushback I often get is that when a concrete drill hits rebar it rattles the drill operator so he doesn't continue to drill through the rebar. Perhaps, but perhaps also you'd like to purchase a bridge I own in Brooklyn?
Anyway, this is an issue that I have to deal with on an ongoing basis so I'm curious as to your thoughts and how you approach this topic. Thanks.
What are your thoughts regarding installing concrete anchors into existing structural concrete? I fight this battle on a frequent basis, that is, I don't like anchors installed in the proximity of tension steel. The pushback I often get is that when a concrete drill hits rebar it rattles the drill operator so he doesn't continue to drill through the rebar. Perhaps, but perhaps also you'd like to purchase a bridge I own in Brooklyn?
Anyway, this is an issue that I have to deal with on an ongoing basis so I'm curious as to your thoughts and how you approach this topic. Thanks.






RE: Concrete Anchors Damaging Rebar?
Seriously, if I understand correctly, the tension rebar is perpendicular to the anchor. So what do you fear ? Removal of concrete around tension bar because of drilling?
RE: Concrete Anchors Damaging Rebar?
RE: Concrete Anchors Damaging Rebar?
For concrete with rebar, core drills are used and the core bit has diamond grit to cut the steel.
RE: Concrete Anchors Damaging Rebar?
RE: Concrete Anchors Damaging Rebar?
RE: Concrete Anchors Damaging Rebar?
Hammer drill bits are usually carbid tipped and damage before damaging the rebar.
RE: Concrete Anchors Damaging Rebar?
RE: Concrete Anchors Damaging Rebar?
RE: Concrete Anchors Damaging Rebar?
Generally, if placement is critical, it is best to solve that issue. Otherwise, there is so solution but to cut the bar with a core drill and make other arrangements to control tension in the member.
RE: Concrete Anchors Damaging Rebar?
RE: Concrete Anchors Damaging Rebar?
RE: Concrete Anchors Damaging Rebar?
http://www.bluetoolking.com/products/bosch-sds-plu...
Has an SDS shank so it fits a standard hammer drill. Might have to put it on rotation only mode to use it.
RE: Concrete Anchors Damaging Rebar?
If we hit rebar, we would have to use a core drill if it was allowed, or move the anchor, which in some cases cannot be done.
If we knew where the anchor was to be installed, prior to concrete placement, we would make sure the rebar was not in the way. After placement, we would use Xray to determine a good location for the anchor.