Yes, for passive fire protection, intumescent coatings are the preferred
method. There are other spray on coatings but intumescent has less bulk than
say cementitious type coatings. Intumescent coatings tend to be less labor
intensive than boxing and wrapping thus reducing overall costs for complex
installations. Also GB membrane type of protection tends to become less
reliable over time especially in occupancies where renovation work may occur
out into the future. People remove it, penetrate it etc. and don’t repair the
impairments. Passive fire protection is like any other system, it needs to be
inspected after construction or repair work and maintained in order for it to
be effective. Trouble is, like sprinklers, since it’s not related to comfort
or revenue generation, it is often long forgotten and not maintained.
Any coating causes more challenges to the contractors during construction since
if you are hanging from coated bar joist for example, the material often has to
be chipped off or ground away, hanging clamps placed and then the coating
repaired. If you have to change anything, it’s a repeat and all that costs
money.
Craig Prahl | Jacobs | Group Lead – Fire Protection | 864.676.5252 |
craig.pr...@jacobs.com<mailto:craig.pr...@jacobs.com> |
www.jacobs.com<http://www.jacobs.com/>
From: Sprinklerforum On Behalf
Of Bill Brooks
Sent: Thursday, February 14, 2019 8:46 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: [EXTERNAL] Intumescent Steel Protection (Not Sprinkler Question)
I apologize in advance for this question, and I invite off-line responses. I
also admit to not being 100% up-to-date on construction trends. However, if
there is a group who would be able to answer this it would be you.
I’m participating in a design for a 2 story office building with absolutely no
special features, with the exception that the construction type is Type IIA. I
suggested using a gypsumboard membrane protection approach but the owner is
steering the project to use of intumescent coating for steel structure,
including bar joists – coatings shop-applied and touched up in the field after
making connections. I’ve been told this technique is becoming more prevalent.
Any feedback is welcome.
Bill Brooks
bill.bro...@brooksfpe.com<mailto:bill.bro...@brooksfpe.com>
William N. Brooks, P.E.
Brooks Fire Protection Engineering Inc.
372 Wilett Drive
Severna Park, MD 21146-1904
410-544-3620
410-544-3032 FAX
412-400-6528 Cell
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