Thank you. The bolts are embedded 18 inches into 3000 psi concrete.
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...
Ron,
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...
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 ASTM A107 was withdrawn in 1968.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