Metal Deck Attachment

[Einsteim]

We have a very small hanging load (~50lbs)that will be supported by a 22 gauge metal roof deck. Does anybody have a bracket or hanger that would screw to the underside of the roof deck and can support a wire rope type hanging load.

 

[lkjh345]

Know any mechanical contractors?

They always seem to be hanging ductwork with toggle type bolts through roof deck.

I tell them they can't hang loads from the deck, but that only seems to make them stop long enough till I leave the job site.

 

[MiketheEngineer]

There are a bunch of fasteners that may solve your problem..

Check with Simpson, USP, McMaster-Carr, Grainger, ITW or even Lowes.

BUT be careful not to penetrate your roof deck or you will have more problems --- like rain water leaks!!

 

[whyun]

Regardless of how small the load may be, I try to avoid relying on tensile capacity of a screw through sheet metal. I would put a small bent clip angle that is screwed to the web of the roof deck so the screw acts partially in shear.

 

[geoffdale]

Unistrut. Really nice system. Might even work between 2 joists.

 

[msquared48]

Threaded eyebolt with nuts and lockwashers top and bottom. All materials hot-dipped galvanized.

Mike McCann
MMC Engineering

 

[Einsteim]

We've exhausted the uni-strut option...or, shall I say the architect has eliminated it. We all know this is done all the time with electrical and mechanical contractors, I thought somebody may have a unique clip with some allowable capacities. Thanks.

 

[whyun]

If it is to be specified on a new structure, how about a bluebanger with an eyebolt? If it is existing, this won't work.