Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations SDETERS on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Gypsum Floor Decking

Status
Not open for further replies.

SteelPE

Structural
Mar 9, 2006
2,759
I have an existing mezzanine that I need to evaluate the capacity of. The mezzanine uses what looks like prefabricated gypsum panels that are supported by open-web steel joists. The panels are approximately 2" think and span 3'-6" +/- (steel joist spacing).

Does anyone have any information on these panels and their load capacities?

IMG_7681_vhzrhk.jpg

view from underside

IMG_2757_cweu7h.jpg

view from top of mezzanine

IMG_2758_qls4oe.jpg

cross section view of panels
 
Replies continue below

Recommended for you

I ran into these same panels for the first time as well maybe two weeks ago. Mine were used for roof framing.
There is a similar product apparently still available by Martin Fireproofing. They have load tables (attached)
The Gypsum ones were possibly by a company called US Gypsum. I did not have luck finding load tables on-line. (2015 article attached)they mention a US gypsum specification guide 1971.
Photo_a_toxgxj.jpg
Photo_b_iw4d5g.jpg



 
Those look like a Bulb-T system.


Not sure they were ever approved as flooring, they are a bit low capacity and don't feel very ductile to me, then again, neither does Tectum. I know at one point I found some information on them, including some diaphragm testing? These are more of a roof plank system to me.

A few links -



Diaphragm strength:
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor