Common details for Steel Beams above nonbearing CFS Walls? 2

[Revv]

Hey Guys So I'm working on a project where I basically want to frame out the building using steel I beams and columns and there are interior CFS walls that I want to be nonbearing but I want to hide my columns in them. Does anyone know of a commonly used detail for an I beam in line with the wall(above the wall) that the wall can attach to but not be bearing? Is this framing system common? I'm pretty new to steel work.

My only initial idea was to weld 2 symmetrical angles turned down to the bottom side of the bottom flange of the steel I beam. Then, add another track upside down on top of the regular track at cfs walls. Would connect the 2 back to back tracks together using screws in the center, then attack the bottom legs of the angles to the upward legs of the cfs tracks with screws with a washer in a vertically slotted hole. #1 I'm not sure this washer connection actually provides a nonbearing condition and #2 this seems pretty intricate.

 

[phamENG]

It's very common. You want deflection tracks. There are proprietary systems that involve either deep leg tracks with slots or clip angles with slots (some of the fancy ones have plastic bushings to prevent metal on metal squeaking). Or you can do it the 'traditional' way and specify a deep leg track fastened to the bottom flange of the beam and the wall studs floating inside with a gap sized for the beam deflection. For this to work, you have to make sure you have a punch out with a row of stud bridging/bracing within 12" of the head of the wall.

Some Examples

 

[JLNJ]

Make sure you allow for enough deflection. We had a case where the architect forgot about allowing for the deflection of the roof until after the drawings were bid. When I reminded him about it I also warned him to allow for enough deflection. When he asked how much, I told him "six inches". He couldn't wrap his mind around it, but it was a ~200' span joist/truss system.

 

[phamENG]

JLNJ - 6in!? Yikes. I hope you'd be keeping the wall well below the roof and just using periodic bracing. I don't think there's a normal "deflection track" detail that could ever handle that. You'd need a pair of 1/4" steel bent plates.