UL 14C:2017-07 Swinging Hardware for Standard Tin-Clad Fire Doors Mounted Singly and in Pairs.
1.1 These requirements apply to hardware for swinging fire doors which have demonstrated in fire tests fire-resistive properties warranting their use with two-ply and three-ply tin-clad fire doors tested in accordance with the Standard for Fire Tests of Door Assemblies, UL lOB (NFPA No. 252).
1.1 revised December 15, 2008
1.2 Requirements for the location and time rating required for fire doors are contained in the International Building Code (IBC). Requirements for the installation of swinging two-ply and three-ply tin-clad fire doors are included in the Standard for Fire Doors and Other Opening Protectives, NFPA No. 80.
1.2 revised December 15, 2008
1.3 The hardware included in these requirements is intended for mounting standard two-ply and three-ply tin-clad swinging fire doors for protection of openings not exceeding the dimensions for the hourly classifications indicated in Table 1.1.
2 Units of Measurement
2.1 When a value for measurement is followed by a value in other units in parentheses, the second value is only approximate. The first stated value is the requirement. SI units as employed are in accordance with the Standard for Practice for Use of the International System of Units (SI) (the Modernized Metric System)
ASTM E380-91 a.
2.2 The tolerance for all dimensions shall be as specified with the dimension. Where no tolerance is shown, the tolerances specified in Appendix B shall apply. See Appendix B for specifications.
3 Undated References
3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard.
4 General
4.1 Each complete set of hardware for swinging tin-clad fire doors shall include:
a) For Doors Mounted Singly — Wall strips, except for openings supplied with standard steel frames, hinge brackets, hinge straps, latch straps, latch catches, connecting bar, operating
handle mechanism, latch spring, and required washers, rivets, and bolts to mount hardware on
the door and wall.
b) For Doors Mounted in Pairs — In addition to the above members, top and bottom bolts and top and bottom 1/2 keepers for standing doors.
4.2 All hardware parts shall be made of wrought or malleable iron or steel.
4.3 The number and spacing of hinges and latches depend on the door sizes. See Tables 5.1 and 5.2.
5 Hinges for Doors Mounted Singly and in Pairs
5.1 Hinge straps
5.1.1 A hinge strap shall be made of steel 2-1/2 inches (64 mm) wide and 3/8 inch (9.5 mm) thick, shall have an eye 13/16 inch (20.6 mm) in diameter in one end, and shall be provided with bolt holes 7/16 inch (11.1 mm) in diameter at not more than 12 inch (305 mm) centers. The first hole shall be located not more than 6 inches (152 mm) from the center of the hinge eye, and the last hole shall be located at not exceeding 1-1/2 inches (38 mm) from the opposite end and shall be offset at the hinge eye as shown in Figure 5.1.UL 14C pdf download.