Sidelites and transoms around a 20 minute fire door in a 1 hour exit require a 45 minute fire rating with hose stream.
Maximum size 1 hour rated glass door.
20 minute fire doors with 20 minute vision panels without hose stream are permitted in a 1 hour exit corridor.
45 minute fire protective windows are permitted in a 1 hour exit corridor up to a maximum of 25 of the wall area.
Maximum glass light size for a 90 minute 1 1 2 hour door depends on the type of glass being installed.
When the code requires fire doors rated 1 hour or more then the sidelites and transoms around that door must be fire resistive and rated to the same standard as the wall itself e g 1 or 2 hour.
Maximum glass light size for a 90 minute 1 1 2 hour door depends on the type of glass being installed.
Wire glass 100 square inches is max exposed glass when wire glass is used.
Wire glass 100 square inches is max exposed glass when wire glass is used.
Furthermore sidelights and transoms placed in a 1 or 2 hour wall and door assembly in a shaft exit enclosure or exit passageway must also be fire resistive glazing.
Note many code are outlawing the use of wire glass due to the hazards of injury from glass breakage.
What is the maximum glass light size on a 90 min 1 1 2 hour fire rated door.
Wire glass 100 square inches is max exposed glass when wire glass is used.
Furthermore sidelights and transoms placed in a 1 or 2 hour wall and door assembly in a shaft exit enclosure or exit passageway must also be fire resistive glazing.