Steel Floor Joist Bridging
Steel Floor Joist Bridging
(OP)
Consider an electrical room inside a larger industrial area. That is, room is "self-standing" with stud wall terminating below the ceiling (not at the floor or structural roof above).
Walls and ceiling are cold formed steel, Cee shapes.
Ceiling is 8" tall Cee shape spanning 18'. It has 9/16" Vercor metal deck on top of joists, bracing top flange with #10 SMS at 24" oc.
5/8" type X gypboard fastened to btm flange at 12" oc.
Walls are 6" tall Cee shape, 11' tall, with gypboard both sides.
A cold formed manufacturer's design guide that recommends bridging at third points (6' from each wall for this case).
If the top flange and bottom flange are fully braced at no more than 24", what benefit is bridging?
Is this a 2007 AISI code requirement, or a good idea, or a waste of time and money, or a miscommunication in the design guide?
Walls and ceiling are cold formed steel, Cee shapes.
Ceiling is 8" tall Cee shape spanning 18'. It has 9/16" Vercor metal deck on top of joists, bracing top flange with #10 SMS at 24" oc.
5/8" type X gypboard fastened to btm flange at 12" oc.
Walls are 6" tall Cee shape, 11' tall, with gypboard both sides.
A cold formed manufacturer's design guide that recommends bridging at third points (6' from each wall for this case).
If the top flange and bottom flange are fully braced at no more than 24", what benefit is bridging?
Is this a 2007 AISI code requirement, or a good idea, or a waste of time and money, or a miscommunication in the design guide?






RE: Steel Floor Joist Bridging
RE: Steel Floor Joist Bridging
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Steel Floor Joist Bridging
For no sheathing below, bridging is certainly required - just like roof joists. But for an elevated floor, like 2nd story or ceiling with access above, seems like no benefit.
RE: Steel Floor Joist Bridging