Title:
Concrete Q&A: Grade 40 No. 11 Reinforcing Bars
Author(s):
Publication:
Concrete International
Volume:
37
Issue:
9
Appears on pages(s):
60
Keywords:
DOI:
Date:
9/1/2015
Abstract:
Q. I’m evaluating an existing reinforced concrete shear wall parking structure located in Southern California. It was reportedly designed and built in the early 1980s. The general notes state that the dowels for the wall-to-foundation connections are Grade 40 reinforcing bars, and the wall sections show that the dowels are No. 11 bars. Could the bars be Grade 40? I’m questioning if a No. 11 reinforcing bar could be manufactured in Grade 40 in the early 1980s. My train of thought is that even though the engineers specified Grade 40, only Grade 60 could be provided for such a size and therefore the higher grade bar was used.