ThorenO2
Structural
- May 24, 2019
- 51
Hello,
I'm working on the structural design of repairs for 1960s era Macomber joists. Where joists have had the bottom chord rotated due to a lack of bridging, I'd like to design new bridging to restore the stability. The manufacturer's catalog has a preferred detail
with welded 1/2" diameter bars that may be in order. However, my understanding from other posts here is welding to these chords can be detrimental, particularly since they're of a thin gauge and not in a controlled environment. What type of weld / bar designation / AWS D1.3, etc. would be recommended for this bridging option to prevent the welder from damaging or weakening the joist? Also, there are some localized damages at the bottom chords themselves, where I am looking to design spot repairs using weldable plates compatible with the light-gauge steel. I appreciate any information on specifying the welding. Thanks,
I'm working on the structural design of repairs for 1960s era Macomber joists. Where joists have had the bottom chord rotated due to a lack of bridging, I'd like to design new bridging to restore the stability. The manufacturer's catalog has a preferred detail
