Boxes in fire rated walls.......

[chevyx92]

Where can I find the requirements on this? Is this in the building code or NFPA? I know there are limitations but need some reference. Thanks.

 

[bphgravity]

See Section 300.21 of the NEC, and Chapter 7 of the IBC, namely Section 712.

 

[barbeer]

The UL directories address most firewall issues. Boxes to be separated by 24 inches or more and rigidly mounted..........

 

[dcspector]

Chevy 03' IBC 712.3.2 membrane penetrations as Bryan mentioned. Also, check "Hilti and Metacaulk-Box Guard" manufs. and In "rated wall assemblies" (min. 1 hr) back to back boxes are not permitted and if they are within 24" of each other then both boxes must be treated with the protective means.

 

[cowboyjwc]

....with no opening more than 16 sq ins and no more than 100 sq ins of openings in 100 sq ft of wall space.

There is a new box made by Allied that you can reduce the distance of back to back boxes to just 3" and be in the same stud bay.

 

[chevyx92]

Chevy 03' IBC 712.3.2 membrane penetrations as Bryan mentioned. Also, check "Hilti and Metacaulk-Box Guard" manufs. and In "rated wall assemblies" (min. 1 hr) back to back boxes are not permitted and if they are within 24" of each other then both boxes must be treated with the protective means.

Is there a copy of the current IBC available to view online anywhere?

 

[Dave58er]

You might also try this thread.

 

[dcspector]

Is there a copy of the current IBC available to view online anywhere?

Chevy, sorry it took so long to get back with you. I don't know if it is available on line. You can also check the ICC website if that helps.

 

[barbeer]

I don't believe there is an on-line resource for IBC, there is however one for the Florida Building Code- after all it WAS muttled after(sorry) modeled after the IBC

http://www.floridabuilding.org/c/default.aspx