As per the ASTM and UL standards, when firestop joints are tested,
they are either qualified as static joints or dynamic joints. For a
Firestop joint system to be qualified as dynamic joint, UL & ASTM
standards require it to be subjected to a cycling test before the Fire
endurance test.
(Fig 4.9 Cycling test table)
After completing the cycling test, the sample is subjected to Fire
Endurance Test for the rating period. On successful completion
of the test for the respective joint systems, assembly rating and
movement rating is granted.
SYSTEM SELECTION
System selection for through fire protection can be done by
accessing third-party certification laboratory listing directories. One
of the examples is the UL certification directory. The UL directory
follows a specific nomenclature to identify the different firestop
systems listed.