I’ve been searching around a little bit, but figured I would ask here, anyone 
have experience with installing these under sprinklers?

I’m working with an architect whose client needs to install these polystyrene 
ceiling tiles that have been tested to drop-out in the case of a fire. They’re 
not doing it to try to save costs, apparently the spec for the product they 
assemble requires a “clean” environment which drives this.

I’m having trouble finding good information about this. The NFPA requirements 
are pretty straightforward, but I’m seeing some conflicting issues in some of 
the other information I can find:


1.       NFPA 13 does not permit QR heads above these ceilings (unless the 
ceiling is specifically listed for them), yet some of the other information 
I’ve found suggests that they can only be used in light hazard areas.

2.       I’ve seen some information suggesting that the sprinklers need to be 
within 60” of these ceilings, but NFPA 13 makes no mention of that. Is that an 
actual requirement?

Thanks guys. Any info helps.

-Kyle M
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