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RE: Fire Rating of Steel Doors

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Wrong building code but:
The other thing corridor doors require by the UBC is draft-smoke control assemblies [smoke gaskets on the top and sides] and they need to be self-closing. 
If the door & frame has a higher rating it should be ok, just make sure it has a UL label indicating the rating on it and it has smoke gaskets and is self closing.  UBC 1004. requires the rating label to have the rating followed by a letter "S", the name of the manufacturer and the identification of the service conducting the inspection of materials and workmanship at the factory during fabrication and assembly.
Scott M Haan P.E.
Plan Review Engineer
Building Safety Division
Development Services Department
Municipality of Anchorage
-----Original Message-----
From: GSKWY(--nospam--at) [mailto:GSKWY(--nospam--at)]
Sent: Wednesday, September 26, 2001 8:37 AM
To: Seaint(--nospam--at)
Subject: Fire Rating of Steel Doors

This may seem like a silly question but:

I need to install a new door for a condo  (Arlington County, Virginia which uses Boca 96).  It is the entrance door from the condo to the (interior) corridor.  Per Boca,  Table 1011.4, Use Group R,  the Corridor Fire Resistance Rating (with sprinker system) is 1/2 hour so per table 717.1,  the door only needs to be rated for 20 minutes.

The steel doors at Home Depot indicate that they are rated for 1-1/2 hours but apparently the Home Depot staff says that the doors do not necessarily comply with county requirements for fire rating.  What other county fire requirements are there likely to be?  If a door is rated for 1-1/2 hours wouldn't it also qualify for a 20 minute requirement?

Going to the county building department and actually asking somebody is always a last resort ...