HRC Tech Note Archives - Headed Reinforcement Corp. https://www.hrc-usa.com/category/hrc-tech-note/ High Performance Reinforcement Products Thu, 30 Jul 2020 20:16:25 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.1 https://www.hrc-usa.com/wp-content/uploads/2020/04/cropped-icon_hrc-32x32.png HRC Tech Note Archives - Headed Reinforcement Corp. https://www.hrc-usa.com/category/hrc-tech-note/ 32 32 Differences Between 4Ab Heads and 9Ab Heads https://www.hrc-usa.com/differences-between-4ab-heads-and-9ab-heads/ Wed, 08 Jul 2020 21:20:25 +0000 https://www.hrc-usa.com/?p=1691 Introduction   This document has been prepared to address the common questions related to differences between 4Ab heads vs. 9Ab heads.   Background   Heads or headed bars are commonly described or referred to based on bearing area.   4Ab head Standard head in the US today – required by ASTM A970 and ACI 318. […]

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