Light-gage Ceiling Joists
Light-gage Ceiling Joists
(OP)
I have 24 ft 800S162-50 ceiling joists interrupted by a 16" high linear diffuser. 4 ft from end of bearing. Which breaks the joist. It would be to expensive to add an additional drop ceiling. Has anyone faced this before. Pretty sure it needs to be a framed section. Please note the crude section will add a diagonal brace. Any other thoughts?






RE: Light-gage Ceiling Joists
RE: Light-gage Ceiling Joists
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Light-gage Ceiling Joists
It never ceases to amaze me that 10's of Structural Engineering hours, a crappy design solution and thousands of dollars in extra structural work is not big deal to everyone else, when it comes to saving a few bucks on a dropped ceiling or asking the Mech. E. to think a little and come up with a workable solution which allows reasonable structuring. Back charge the Mech. for the whole mess, since they couldn’t be bothered to think a little about a solution which considered the structure. Makes my a$$ tired that everyone else should be able to do their thing the easiest (least thought involved) way, the structure be damned. Then, at whatever cost in time, materials, and forced, inferior, design solution, the Structural Engineer should fix it all, with no extra fee.
Why not the duct work above the joists, with 13-14" wide drops btwn. the joists? Then, put a 1 or 2" deep/high trough, ‘U’ shaped and opening down onto the diffuser. The drops would be attached to flanged openings in the top of the trough.
RE: Light-gage Ceiling Joists
You could make that funky moment connection as you show in your detail, but I would look elsewhere such as suspending things as other have mentioned.
You probably should have known about the diffuser as it was likely super obvious in some crappy BIM section :>
I completely agree with dhengr. I am in a similar situation in the world of light gage and the only reason being is that the HVAC and plumbing contractors got there crap in before the light gage guy did. If he wasn't dragging his feet, it would have been their problem.
Generally speaking, the light gage guy is at the bottom of the pecking order in the eyes of Arch's, EOR's and GC's.
RE: Light-gage Ceiling Joists
Dhengr - in my experience, it is usually the Architect (not the ME) that is responsible for these conditions.
RE: Light-gage Ceiling Joists
RE: Light-gage Ceiling Joists
RE: Light-gage Ceiling Joists
RE: Light-gage Ceiling Joists