Tolerances for Anchor Rods Holes
Tolerances for Anchor Rods Holes
(OP)
Does anyone know about tolerances for specified holes for anchor rods?
I mean, if on shop drawings is specified a diametre for holes, what is the tolerance (in diametre) for making them?
Any reference that adresses this item? Because AISC recomends diametres of holes depending on anchor rod diametre, but AISC doesnt say anything about the tolerance in diametres of holes.
Thank you in advance.
I mean, if on shop drawings is specified a diametre for holes, what is the tolerance (in diametre) for making them?
Any reference that adresses this item? Because AISC recomends diametres of holes depending on anchor rod diametre, but AISC doesnt say anything about the tolerance in diametres of holes.
Thank you in advance.





RE: Tolerances for Anchor Rods Holes
What sometimes gets applied is the tolerance for structural bolt holes, because anchor rods get called "anchor bolts". This tolerance is way too stringent.
Texas DOT uses a tolerance of +1/8" (3 mm) -0 for bridge anchor rod holes, for whatever that's worth.
Hg
Eng-Tips guidelines: FAQ731-376
RE: Tolerances for Anchor Rods Holes
You should post this to the AISC Steel Solutions Center. Those guys get an answer back to you in a hurry.
I thought you were going to ask the typically more relevant question of anchor rod placement tolerances. Many people don't think about it and use the ACI 117(?) tolerances rather than the AISC Code of Standard Practice. The ACI standard, I believe, is 1", a ludicrous number. The AISC number is much smaller. Most folks I know are going toward the AISC number.
14159
RE: Tolerances for Anchor Rods Holes
RE: Tolerances for Anchor Rods Holes
You could probably detail the drawings with a plus or minus 1/16" tolerance and meet code requirements.
-Mike