DCA3: Designing fire-rated I-joist assemblies
Construction Specifier
JUNE 30, 2021
When DCA3 was first published, it is likely many I-joists did indeed satisfy all these requirements but, over the years, manufacturers have improved their technologies and found ways to get better performance out of less material. Fiberglass insulation, whether blown-in or blanket, is perhaps the most used material for this application.
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