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American Fire Sprinkler Association [http://www.firesprinkler.org/]
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Monday's Technical Update
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A weekly newsletter dealing with codes and other technical issues
September 8, 2014
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Other Trades within Concealed Spaces
"In concealed spaces entirely filled with noncombustible insulation where there
is duct work, plumbing, electrical, and other piping, is this still considered
not
to be sprinklered?"
We have reviewed NFPA 13, 2013 edition as the applicable standard. Our informal
interpretation is that the systems from other trades are expected within
concealed
combustible spaces when applying the requirements of Section 8.15.1 Concealed
Spaces.
The purpose of the insulation is to fill the concealed combustible space with
noncombustible
insulation as an alternative to providing sprinkler protection according to
Section
8.15.1.2.7. The combustible concealed space is expected to have pipe, cables,
wires,
and HVAC ducts. It would be rare that a concealed space would not have other
trades
using the space. The purpose of the noncombustible insulation is to prevent fire
spread within the space even with components from other trades within the
space.
If the standard meant that no other trades could use these spaces, it would
state
as such. Note that a change was made in the 2013 edition for this section where
a maximum 2 in. air gap at the top of the space shall be permitted. This was
added
to allow for air movement to help prevent the growth of mold or mildew
conditions
within the concealed combustible space.
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Hosted by the American Fire Sprinkler Association
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Technical Update is prepared by the Technical Services Dept. of the AFSA: Vice
President
of Engineering and Technical Services Roland Huggins, a PE registered in fire
protection
engineering; Phill Brown, a NICET IV certified automatic sprinkler technician
and
NFPA Certified Fire Protection Specialist (CFPS) and Tom Wellen, a PE registered
in fire protection engineering. This is provided with the understanding that
the
AFSA assumes no liability for this opinion or actions taken on it and they are
not
to be considered the official position of the NFPA or its technical committees.
Copyright 2014, American Fire Sprinkler Association.
All Rights Reserved
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PDF Link
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AFSA Webinar
Kenneth W. Wagoner, CFPE, CFPS, SET
to Present on
"Seismic Bracing Layout"
Wednesday
September 10, 2014
11:00a.m. - 12:30 p.m. Central
Free to AFSA members!
Register Button
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Training Calendar
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