Interpretation #6575

Published July 08, 2010

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Original Request

Code Version
2007
Code
MECHANIC
Code Description
Mechanical
Chapter
6
Section
602.2.1
Topic
Plenums

Question

Is it the intent of Florida Building Code - Mechanical Section 602.2.1 to allow PVC piping enclosed in an ASTM E 84 approved insulation material to be installed in or pass through a plenum?

Answer Published 07/08/2010 at 9:28 AM

No, unless the material used to cover the plastic pipe is
listed and labeled for the intended use. Exception #5 of
Florida Building Code - Mechanical Section 602.2.1 requires
the material to be listed and labeled for the purpose of
protecting a combustible material within the plenum space.

Commentary

None.