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 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.
Note many code are outlawing the use of wire glass due to the hazards of injury from glass breakage.
To increase the amount of fire rated glass in 60 or 90 minute temperature rise doors and still meet code you must use fire resistive glazing that meets astm e119.
Maximum glass light size for a 90 minute 1 1 2 hour door depends on the type of glass being installed.
Sidelites and transoms around a 20 minute fire door in a 1 hour exit require a 45 minute fire rating with hose stream.
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.
What is the maximum glass light size on a 90 min 1 1 2 hour fire rated door.
45 minute fire protective windows are permitted in a 1 hour exit corridor up to a maximum of 25 of the wall area.
To increase the amount of fire rated glass in 60 or 90 minute temperature rise doors and still meet code you must use fire resistive glazing that meets astm e119.
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.