Combustible finishes in noncombustible construction

[joe-architect]

2006 IBC. Type IB construction. Referring to 801.2 and the definition for Interior Wall and Ceiling Finish.

1. Is a 3/4" plywood panel applied directly to metal studs permitted?

2. Is a 3/4" MDF panel applied over GWB over metal studs permitted?

Do these materials need to be fire-retardant treated?

thanks.

 

[Coug Dad]

If you read 803.4 I think you will find that the combustible materials must be applied over a layer of drywall.

 

[joe-architect]

OK. That makes sense.

 

[Coug Dad]

Joe, don't be a stanger. Only four posts since December. We don't bite (too often)!

 

[joe-architect]

Don't worry. You don't scare me