Joist Girders as Perimeter Framing
Joist Girders as Perimeter Framing
(OP)
Are there any reasons why Joist Girders should not be used as perimeter framing members.
I've heard there are drag strut issues, related to the connnection between the perimeter steel deck and perimeter framing (exterior diaphragm fastening)
Also, has anyone used Joist Girders for concentrically braced frames.






RE: Joist Girders as Perimeter Framing
I have used JG in perimeter framing. You need to make sure you can drive the loads though the chords of the girders and from one girder to the next. You also need to make sure that you indicate the loads properly to the joist MFR.
RE: Joist Girders as Perimeter Framing
I have never used a joist girder in a braced frame, I think the eccentricity of where the brace connects relative to the joist girder connection to the column would be problematic in a cross braced concentric frame. I wouldn't try a chevron brace on a joist girder. I suggest using a beam for either case.