Is this a multiple story building?  If so, don't you still have to protect
the landings where egress and access happen??  Regardless of combustible
finishes??  NPFA 13; 8.15.3.3

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Drucker
Sent: Thursday, July 31, 2008 11:06 AM
To: [email protected]
Subject: RE: Stair shafts

Maybe. 

Floor coverings, specifically carpet is considered interior finish
pursuant to 2006 IBC 804.4 and as such Class I (I-1 and I-2) , Class II
materials (A,B,E,H,I-4,M,R-1,R-2 and S) and DOC FF-1 compliant in all
the others. The exception allows interior finish requirements to be
bumped down one grade where a building is equipped throughout with an an
automatic sprinkler system in accordance with 2006 IBC 903.3.1.1 or
903.1.2.   903.3.1.1.1 -4. Exempts "In rooms or areas that are of non
combustible construction with wholly non combustible contents".

So if the interior finish materials meet the non combustible criteria
then sprinklers are only required at the top and bottom levels of a non
combustible stair.  Someones got to go back to the carpet manufacturer
for the answer.

PS, Change Stair Shaft to Stair Enclosure.

Hope that helps

John Drucker
Fire Protection Subcode Official (AHJ, not a scientist ;-))
New Jersey

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Margaret
Zabel
Sent: Thursday, July 31, 2008 11:39 AM
To: Sprinkler Forum
Subject: Stair shafts

Using NFPA 13-2002, paragraph 8.14.3.2 describes the requirements for
sprinklers in non-combustible stair shafts.

Would a non-combustible construction stair shaft (concrete stairs,
sheetrock/rated walls) that has carpet on the landings and stair treads
be considered "non-combustible"?  Assuming the stairs are over 4'-0
wide, should there be sprinklers located throughout the shaft -- below
treads and stairs?

Thank you,

Margaret Zabel
Cisco Fire Sprinklers
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