48 x 48 window in 2 hour wall

[Andy J]

I'm more of a geotech but have a question about a 4'x4' window in a 2 hour fire wall.

2 hour glass for an opening looks.like it is 2 1/2" thick. Is there any combinations of day 2 1-hour rates panes combined together, etc that meet IBC 2015?

 

[JLNJ]

I don't think it's as easy as 1 hour + 1 hour = 2 hours. I believe any 2-hour rating would need to come from tested assemblies.

I'd call the

http://www.fireglass.com

people and see what solutions they have to offer. It looks like they have a 2 1/8" thick option. I know all their options are expensive, that's for certain.

Smaller openings sometimes need just 2/3 or 3/4 the rating of the wall they are in. Maybe that saves a little thickness.

 

[Andy J]

Thanks,
Andy

 

[dik]

Are there spatial separation issues that need to be looked at?

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[Andy J]

IT's between a garage and laboratory... Frame was made to thin for the thicker 2 1/8" thick glass.. Would prefer not to have to rip the frame out since they just drywalled and painted the walls.

 

[Brad805]

Roll shutter with fuse able link?

 

[Andy J]

Shutter would probably work. Have plenty of space for one. Garage wall is about 20' tall there.