Need Allowable Loads for A107 anchor rods
Need Allowable Loads for A107 anchor rods
(OP)
Does anyone have the old ASTM A107 Standard or other published document that provides the allowable loads on anchor rods? ASTM A107 was withdrawn in 1968.
Thank you.
TEW
Thank you.
TEW





RE: Need Allowable Loads for A107 anchor rods
Are you maybe looking for ASTM A307, a common bolt specification for normal strength bolts (including anchor bolts)? Even that does not give a table as I recall, though A307 has a minimum yield of 36ksi, so you can compute the load based on the net area after threads are considered.
AISC manuals give tables for bolt loads, including A307 bolts.
RE: Need Allowable Loads for A107 anchor rods
Thanks, but the drawing (1964 vintage) clearly indicates ASTM A107, Grade 1020, not A307. I thought that the A107 may have been replaced with the A307, but could not confirm. According to ASTM, A107 was replaced with ASTM A575. I looked in my AISC 6th Ed. steel manual, but it was silent on this material.
Still looking.
RE: Need Allowable Loads for A107 anchor rods
I'll post as soon as I can check it. Do you know the diameter of the anchor bolts? Do you know if they are hooked or otherwise "locked" into the concrete? That dictates the ultimate capacity, not the yield strength of the material.
Also...I red flagged your post in the structural forum since cross posting in the forums is not allowed.
Ron
RE: Need Allowable Loads for A107 anchor rods
Thank you.
RE: Need Allowable Loads for A107 anchor rods
If you look at the concrete embedment, you'll have to compute a failure cone (45 to 60 degrees)and figure the resolved shear-tension failure of the concrete at the cone face.
Depending on the edge distance, the influence of the cone area, spacing of the bolts, strength of the concrete and maybe a few things I'm not thinking of at the moment, you'll be at one of the conditions, most likely with the concrete parameters controlling.
RE: Need Allowable Loads for A107 anchor rods
I do not have a problem with the calculations regarding the pull out of the the bolt or concrete cone. I really just need the allowables for the anchor rod steel material.
I am adding an extention to the base plate and additional bolts (epoxy installed) and want to take credit for the existing bolts.
Thank you.
RE: Need Allowable Loads for A107 anchor rods
ANCHOR RODS SHALL CONFORM TO ASTM [A36|F1554 (GRADE 36|55|105) MIN U/N
you can use ASTM F1554 Grade 55 or higher if needed...
RE: Need Allowable Loads for A107 anchor rods