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SECTION
715 OPENING PROTECTIVES
715.4.3 Door assemblies in
corridors and smoke barriers. Fire door assemblies required
to have a minimum fire protection rating of 20 minutes where
located in corridor walls or smoke-barrier walls having a
fire-resistance rating in accordance with Table
715.4 shall be tested in accordance with NFPA 252 or UL
lOC without the hose stream test.
Exceptions:
1.View
ports that require a hole not larger than 1 inch (25 mm)
in diameter through the door, have at least a 0.25-inch-thick
(6.4 mm) glass disc and the holder is of metal that will
not melt out where subject
to temperatures of 1,700°F (927°C).
2.Corridor
door assemblies in occupancies of Group 1-2 shall be in
accordance with Section 407.3.1.
3.Unprotected
openings shall be permitted for corridors
in multithreaded complexes where each motion picture auditorium
has at least one-half of its required exit or exit access
doorways opening directly to the exterior or into an exit
passageway.
715.4.3.1 Smoke and draft control.
Fire door assemblies shall also meet the requirements for
a smoke and draft control door assembly tested in accordance
with UL 1784. Louvers shall be prohibited. Installation of
smoke doors shall be in accordance with NFPA 105.
715.4.3.2 Glazing in door assemblies.
In a 20-minute fire door assembly, the glazing material in
the door itself shall have a minimum fire-protection rating
of 20 minutes and shall be exempt from the hose stream test.
Glazing material in any other part of the door assembly, including
transom lites and side lites, shall be tested in accordance
with NFPA 257, including the hose stream test, in accordance
with Section 715.5.
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