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UL 10A Document Information:
Title
UL Standard for Safety Tin-Clad Fire Doors
Underwriters Laboratories Inc.
Publication Date:
Feb 25, 1998
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:
a) Sliding hardware and
b) 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 BOCA National
Building Code, Standard Building Code (for SBCCI), and Uniform
Building Code (for ICBO). 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
wired glass are included in the Standard for Fire Doors and Fire
Windows, 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.
A product that contains features, characteristics, components,
materials, or systems new or
different from those covered by the requirements in this standard, and
that involves a risk of fire
or of electric shock or injury to persons shall be evaluated using
appropriate additional component
and end-product requirements to maintain the level of safety as
originally anticipated by the
intent of this standard. A product whose features, characteristics,
components, materials, or
systems conflict with specific requirements or provisions of this
standard does not comply with
this standard. Revision of requirements shall be proposed and adopted
in conformance with the
methods employed for development, revision, and implementation of this
standard.
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