Craig,
My thoughts:
8.14.1.2.5 does not apply at all, as you're describing composite wood
joist construction, which by it's definition is
not wood joist construction. See the annex A.3.7.1 (3) vs. A.3.7.1(5).
Ask the sprinkler contractor to read both of those annex
definitions and then explain why composite wood joist construction is to
be regarded as wood joist. Also direct them to A.11.2.3.1.8(4)(b)
for some further guidance.
Additionally, 8.14.1.2.6 doesn't apply unless the architect amends the
plans and provides the insulation noted in the section,
and shown clearly in Fig. A.8.14.1.2.6.
Also, make sure the contractor understands that if sprinklers are
omitted from the combustible concealed space as you describe, once the
insulation and fire stopping have been provided, the remote area must be
increased to 3,000 square feet, per 11.2.3.1.8(3)
PARSLEY CONSULTING
Ken Wagoner, SET
760.745.6181 voice
760.745.0537 fax
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> e-mail
www.ParsleyConsulting.com <http://www.ParsleyConsulting.com> website
Craig Rauch wrote:
I would like to pose a question regarding combustible concealed spaces. We are
under the Ohio Building Code (2006 IBC) and the 2002 NFPA 13.
This is a three story Type VA residential building. The floors are 20" TJI's with 1"
gypcreat on top and 5/8" Type X Gyp Bd underneath.
I am concerned with this 20 inch deep combustible concealed space between the
floor and ceiling.
The sprinkler contractor is quoting 8.14.1.2.5. to avoid sprinkle ring this
space.
The architect has brought up 8.14.1.2.6. But he does not want to place
insulation on intermediate floors (just top floor) and he is not showing the
fire stopping.
My questions are:
1. Would you say that 8.14.1.2.5 is applicable in this case?
2. Would 8.14.1.2.6 apply providing the architect amends the plans to have
the insulation and the fire stops?
Craig Rauch, Certified Fire Safety Inspector
Washington Township Fire Department
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