Lateral Bracing of CFS Roof Purlins / Joists
Lateral Bracing of CFS Roof Purlins / Joists
(OP)
The 1.5B22 metal roof deck has a 1/4:12 pitch.
The CFS Purlins / Joists are NOT pitched.
Purlins span 24 feet and bear on a steel shelf angle anchored to side of a CMU wall. At 1/4:12 pitch I do not intend on using roll-over tabs at bearing.
Top chord will be braced with the 1.5B22 Deck. What about the bottom chord?
I always brace a floor. What about the roof?
Is it necessary to use either Simpson Cross Bridging or Dietrich Trade Ready Blocking to laterally brace the bottom chord?
Thank you!
The CFS Purlins / Joists are NOT pitched.
Purlins span 24 feet and bear on a steel shelf angle anchored to side of a CMU wall. At 1/4:12 pitch I do not intend on using roll-over tabs at bearing.
Top chord will be braced with the 1.5B22 Deck. What about the bottom chord?
I always brace a floor. What about the roof?
Is it necessary to use either Simpson Cross Bridging or Dietrich Trade Ready Blocking to laterally brace the bottom chord?
Thank you!






RE: Lateral Bracing of CFS Roof Purlins / Joists
Seen a few of these collapse during erection. Flipping every other one and adding blocking as they go makes it alot more stable during erection.