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Fire door
A
fire door
is a
door
with a
fire-resistance rating
(sometimes referred to as a
fire protection rating
for closures) used as part of a
passive fire protection
system to reduce the spread of
fire
or
smoke
between
compartments
and to enable safe egress from a
building
or structure or ship. In
North American
building codes
, it, along with
fire dampers
, is often referred to as a
closure
, which can be derated compared against the fire separation that contains it, provided that this barrier is not a
firewall
or an
occupancy
separation.
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