I don't think the presence of pvc pipes and pipe insulation have ever been considered on any project I have been involved with in determining if a space is non combustible or not. I think 8.15.1.1 answers the question because it references the construction of the space and then 8.15.1.2.1 states that non combustible / limited comb spaces with minimal combustible loading do not require protection.

IMHO, if there were a great deal of combustible materials then maybe protection would be required per 13, but I would say that if the tops of wood stud walls do not cause a space to require protection, then a few pipes wouldn't either.
Greg


On 8/21/2010 9:21 AM, [email protected] wrote:
S

Sent from my Verizon Wireless Phone

----- Reply message -----
From: "A.P.Silva"<[email protected]>
Date: Fri, Aug 20, 2010 5:40 pm
Subject: Question on sprinklering an attic space
To:<[email protected]>

I think the point is you have combustible construction  (pvc vent stacks&
combustible pipe insulation) in a building designated as non-combustible.
The question is not only whether you need sprinklers in this concealed space
but also whether you can have combustible material in a non-combustible
building. You will have to look at your building code. Certain combustible
material such as millwork and combustible sprinkler piping may be permitted,
but most other combustible material may not be. Providing sprinklers in this
concealed space may not be a solution, although it may be used to obtain a
variance.

I really don't understand the advice given by your consultant and what
bearing it has on this issue. Are they saying all material in the concealed
space are either non-combustible or limited combustible? You need to find
out if this is correct. I think you are confusing two issues here. This is
not primarily a sprinkler issue, but whether you are are allowed certain
combustible material in a non-combustible building.

Tony

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Jeff Hewitt
Sent: August 20, 2010 3:13 PM
To: [email protected]
Subject: RE: Question on sprinklering an attic space

Sounds like your consultant is correct in accordance with NFPA 13.  But that
does not address whether there are any specially adopted requirements via
the Department  of Health.

Jeff Hewitt, PE, SET, SFPE (Professional Member) Corporate Engineer Bi-State
Fire Protection Corporation

241 Hughes Lane
St. Charles, MO  63301
636-946-0011
636-946-5172 (fax)
314-574-6989 (cell)

Fire Sprinklers Save lives.
Can You Live Without Them?

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dennis
Schwarzauer
Sent: Friday, August 20, 2010 3:47 PM
To: [email protected]
Subject: Question on sprinklering an attic space

I have a single story residential-style structure used for housing
semi-dependent residents for the State Department of Mental Health. The unit
is an Intermediate Care Facility for the Mentally Retarded, but is viewed as
a nursing home by the state agencies.

The building is non-combustible construction; CMU bearing walls with light
gauge metal trusses and standing seam metal roof. The single floor is fully
sprinklered&  that is where my problem begins. My boss had me direct the
Consultants to eliminate the sprinkler in the attic, to save money, as the
building was of non-combustible construction. Now the Fire Marshal&
reviewer for the State Health Department are telling me that  all the PVC
vent stacks and piping insulation is non-compliant.

My Consultant is telling me that, as these are concealed spaces, the IBC
allows non-combustible&  limited combustible materials to be present without
sprinklers.
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