We have some Hilti HAS threaded rod anchors with HIT-RE 500 V3 adhesive which have been installed with insufficient depth. The contractor will cut off the old anchors and re-drill new ones. What is the minimum distance the new holes need to be from the cut off anchor? Obviously following the minimum anchor spacing guidelines from HILTI would be sufficiently far, but I want to know if this distance can safely be reduced since the old anchor has no load on it. Thanks.
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Concrete Adhesive Anchors - Minimum Spacing from cut off anchor
- Thread starter tomecki
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More background:
A structural engineer has given instructions to the contractor that the new hole can be drilled within 18mm of the old 5/8" dia anchor. Sounds fishy to me, so I'm looking for references to verify or refute this claim.
I'm aware that there are alternative methods of handling this and I appreciate the suggestions, but that's not what I need help with. Sometimes politics get in the way of the technical issues.
BTW, I did ask HILTI and I'm waiting for a response. Hoping someone can point me to a good resource before I hear back from HILTI.
A structural engineer has given instructions to the contractor that the new hole can be drilled within 18mm of the old 5/8" dia anchor. Sounds fishy to me, so I'm looking for references to verify or refute this claim.
I'm aware that there are alternative methods of handling this and I appreciate the suggestions, but that's not what I need help with. Sometimes politics get in the way of the technical issues.
BTW, I did ask HILTI and I'm waiting for a response. Hoping someone can point me to a good resource before I hear back from HILTI.
Typically there’s a reason why a bolt hole is where it is and relocating the bolts means the structure has to shift or new holes drilled in the steel to line up. On basic principle the break out cone would have reduced geometry, reducing its capacity.
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