UL - 10A
UL Standard for Safety Tin-Clad Fire Doors
|Publication Date:||25 February 1998|
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 degrees F (139 degrees 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