Title:
CRSI Detailing Corner: Reinforcing Bars Exceeding stock lengths; and RFI on Grade 40 Steel.
Author(s):
CRSI Staff and Dick Birley
Publication:
Concrete International
Volume:
31
Issue:
1
Appears on pages(s):
50-52
Keywords:
detailing; reinforcement; RFI; stock length
DOI:
Date:
1/1/2009
Abstract:
1. Although splices are typically used to overcome stock bar-length limitations, there are occasions where splices would be inconvenient or unacceptable. There are also situations where it would be more efficient to have the steel mill fabricate bars that are longer or shorter than the standard stock lengths. Within certain limitations, it’s possible to vary the length of the bar produced at the mill, but it may be better to find an alternate solution.
2. RFI 09-1: I’m a research engineer and occasionally need to use Grade 40 (Grade 280) steel in test specimens. I just noticed that my stock of Grade 40 (Grade 280) bars is getting low. Is Grade 40 (Grade 280) steel still produced and available? Also, how can I be sure the mechanical properties aren’t closer to Grade 60 (Grade 420). I can’t afford to experiment with rejected Grade 60 (Grade 420) steel. Its yield strength may be too high.