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UL 10A Document Information:
Title
UL Standard for Safety Tin-Clad Fire Doors
Underwriters Laboratories Inc.
Publication Date:
Jan 30, 2009
Scope:
These requirements cover the design and construction details of
tin-clad fire doors which when so fabricated have demonstrated in
fire tests conducted in accordance with the Standard for Fire Tests
of Door Assemblies, UL 10B, fire performance properties which
warrant their use as fire doors having a rating of 3, 1-1/2, or 3/4
hour.
The doors covered by these requirements are intended to be
mounted with fire door hardware of the following types:
Sliding hardware and
Swinging hardware.
A tin-clad fire door employing materials and/or having forms of
construction differing from those detailed herein are to be
examined according to the intent of these requirements and shall be
tested for fire performance in accordance with the Standard for
Fire Tests of Door Assemblies, UL 10B. If when so tested, it is
determined that the fire door complies with the Conditions of
Acceptance of this test method it is to be classified as a tin-clad
fire door having the applicable fire performance rating of 3,
1-1/2, or 3/4 hour.
Doors complying with these requirements are classified as to
temperature rise on the unexposed side to 250°F (139°C) maximum at
the end of the first 30 minutes of exposure to fire; or have no
classification referencing temperature rise. See Table 2.1.
A door conforming to these specifications consists of a core
made up of layers of boards nailed to each other, encased in terne
or zinc coated steel in the form of sections jointed together at
their edges and nailed through the seams to the core.
Requirements for the location and time rating are contained in
codes, such as the International Building Code published by the
International Code Council and the Building Construction and Safety
Code, NFPA 5000. The method of installation required for fire doors
is not included in these codes. Requirements for the details for
the installation of tin-clad fire doors, including the requirements
for vent holes and glazing are included in the Standard for Fire
Doors and Other Opening Protectives, NFPA 80.
These requirements do not cover electrical, mechanical, or other
features which relate to the risk of fire or accident beyond the
scope of these requirements.
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