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Title: Section 713  •  Size: 16792

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SECTION 713 - FIRE-RESISTIVE ASSEMBLIES FOR PROTECTION OF OPENINGS

713.1 General. Where required by this code for the fire protection of openings, fire assemblies shall meet the requirements of this section.

713.2 Definitions.

FIRE ASSEMBLY is the assembly of a fire door, fire windows or fire damper, including all required hardware, anchorage, frames and sills.

FIRE ASSEMBLY, AUTOMATIC-CLOSING, is a fire assembly which may remain in an open position and which will close automatically when subjected to one or the other of the following:

1. An increase in temperature.

Unless otherwise specified, the closing device shall be one rated at a maximum temperature of 165°F. (74°C.)

2. Actuation of a smoke detector.

The closing device shall operate by the activation of an approved listed smoke detector. Smoke detectors shall be installed and maintained as set forth in Uniform Fire Code Standard 10-3.

FIRE ASSEMBLY, SELF-CLOSING, is a fire assembly which is kept in a normally closed position and is equipped with an approved device to ensure closing and latching after having been opened for use.

713.3 Identification of Fire Doors, Fire Windows and Fire Dampers. Fire doors, fire windows and fire dampers shall have an approved label or listing mark, indicating the fire-protection rating, which is permanently affixed at the factory where fabrication and assembly are done. Periodic inspections shall be made by an approved inspection agency during fabrication and assembly.

Oversized fire doors may be installed when approved by the building official. The doors shall be labeled or be furnished with a certificate of inspection from an approved agency.

713.4 Installation of Fire Doors, Hardware and Frames, and Fire Dampers. Approved fire door hardware and fire door frames including the anchorage thereof shall be installed in accordance with their listing. Fire dampers shall be fabricated and installed in an approved manner.

713.5 Fire-resistive Tests. The fire-protection rating of all types of required fire assemblies shall be determined in accordance with the requirements specified in U.B.C. Standards 7-2, 7-3 and 7-4. The fire-protection rating of fire dampers shall be determined in accordance with the requirements specified within approved recognized standards.

713.6 Hardware.

713.6.1 Closing devices. Every fire assembly shall be provided with a closing device as follows:

1. Fire assemblies required to have a three-hour fire-protection rating shall be automatic-closing fire assemblies. Automatic-closing fire assemblies to be activated by an increase in temperature shall have one heat-actuating device installed on each side of the wall at the top of the opening and one on each side of the wall at the ceiling height where the ceiling is more than 3 feet (914 mm) above the top of the opening.

2. Fire assemblies required to have a one- and one-half-hour, one-hour or three-fourths-hour fire-protection rating shall be either automatic- or self-closing fire assemblies. Automatic-closing fire assemblies to be activated by an increase in temperature shall have heat-actuating devices located as required in Item 1 or by a single fusible link in the opening incorporated in the closing device.

3. Fire door assemblies required to have fire-protection rating, which are installed across a corridor, shall be automatic-closing fire assemblies. Such fire assemblies shall be activated by a smoke detector. All hold-open devices shall be listed for the purpose and shall release or close the door in the event of a power failure at the device.

4. Fire assemblies required by provisions of Chapter 10 shall have closing devices as specified in Chapter 10.

5. Doors which are a part of an automobile ramp enclosure shall be equipped with automatic-closing devices.

Fire doors which are automatic closing by smoke detection shall not have a closing or reclosing delay of more than 10 seconds.

713.6.2 Hinges. Swinging fire doors shall not have less than two hinges, and when such door exceeds 60 inches (1524 mm) in height, an additional hinge shall be installed for each additional 30 inches (762 mm) of height or fraction thereof. Hinges, except for spring hinges, shall be of the ball-bearing or antifriction type. When spring hinges are used for door-closing purposes, not less than one half of the hinges shall be spring hinges.

713.6.3 Latch. Unless otherwise specifically permitted, all single doors and both leaves of pairs of side-hinged swinging doors shall be provided with an automatic latch which will secure the door when it is closed.

713.7 Glazed Openings in Fire Doors. Glazed openings in fire doors shall not be permitted in a fire assembly required to have a three-hour fire-resistive rating.

The area of glazed openings in a fire door required to have one- and one-half-hour or one-hour fire-resistive rating shall be limited to 100 square inches (64 500 ) with a minimum dimension of 4 inches (102 mm). When both leaves of a pair of doors have observation panels, the total area of the glazed openings shall not exceed 100 square inches (64 500 ) for each leaf.

Glazed openings shall be limited to 1,296 square inches (0.84 ) in wood and plastic-faced composite or hollow metal doors, per light, when fire-resistive assemblies are required to have a three-fourths-hour fire-resistive rating.

713.8 Fire Window Size. Fire windows required to have a three-fourths-hour fire-protection rating for protection of openings in exterior walls shall have an area not greater than 84 square feet (7.8 ) with neither width nor height exceeding 12 feet (3658 mm) and for protection of openings in interior walls shall be limited in area and size to that tested.

713.9 Glazing. Glazing materials and glass block assemblies shall be qualified by tests in accordance with U.B.C. Standard 7-2 (for fire doors) or U.B.C. Standard 7-4 (for fire windows) as appropriate for the use, and they shall be labeled for the required fire-protection rating and installed in accordance with their listing. Glazing in fire door assemblies and in fire window assemblies subject to human impact in hazardous locations as indicated in Section 2406.4 shall comply with Section 2406.3.

713.10 Smoke Dampers. Not less than Class II, 250°F. (121°C.) smoke dampers complying with approved recognized standards (see Chapter 35, Part III) shall be installed and be accessible for inspection and servicing in the following ducted or unducted air openings at:

1. Penetrations of area or occupancy separation walls.

2. Penetrations of the fire-resistive construction of horizontal exit walls or corridors serving as required exits.

EXCEPTION: Openings for steel ducts penetrating the required fire-resistive construction of corridors are not required to have smoke dampers when such ducts are of not less than 0.019-inch (0.48 mm) thickness (No. 26 galvanized sheet steel gage) and have no openings serving the corridor.

3. Penetrations of shaft enclosures.

EXCEPTION: Exhaust-only openings serving continuously operating fans and protected using the provisions of Chapter 9.

4. Penetrations of smoke barriers.

5. Penetrations of elevator lobbies required by Section 3002.

6. Penetrations of areas of refuge.

EXCEPTION: Ventilation systems specifically designed and protected to supply outside air to these areas during an emergency.

A smoke damper need not be provided when it can be demonstrated that the smoke damper is not essential to limit the passage of smoke under passive conditions and the proper function of a smoke-control system complying with Chapter 9 does not depend on the operation of the damper. Smoke dampers may be omitted at openings which must be maintained open for proper operation of a mechanical control system provided that adequate protection against smoke migration, in the event of system failure, has been provided.

713.11 Fire Dampers. Fire dampers complying with the requirements of approved recognized standards (see Chapter 35, Part III) shall be installed and be accessible for inspection and servicing in the following ducted and unducted air openings at:

1. Penetrations through area separation walls or occupancy separations.

2. Penetrations of the fire-resistive construction of horizontal exit walls or corridors serving as required exits.

EXCEPTION: Openings for steel ducts penetrating the required fire-resistive construction of corridors are not required to have fire dampers when such ducts are of not less than 0.019-inch (0.48 mm) thickness (No. 26 galvanized sheet steel gage) and have no openings serving the corridor.

3. Penetrations of shaft enclosures.

EXCEPTIONS: 1. Duct penetrations by steel exhaust air subducts extending vertically upward at least22 inches (559 mm) above the top of the opening in a vented shaft where the airflow is upward.

2. Penetrations of a fire-resistive floor forming the base of a shaft enclosure may be protected by fire dampers listed for installation in the horizontal position.

4. Penetrations of the ceiling of fire-resistive floor-ceiling or roof-ceiling assemblies shall be protected in accordance with Section 710.2.

5. Penetrations of an atrium enclosure element.

6. Penetrations of the building exterior required to have protected openings by Section 503.

7. Penetrations of areas of refuge.

EXCEPTION: Ventilation systems specifically designed and protected to supply outside air to these areas during an emergency.

A fire damper is not required where fire tests have demonstrated that fire dampers are not required to maintain the fire resistance of the construction.

The operating temperature of the fire-damper actuating device shall be approximately 50°F. (10°C.) above the normal temperature within the duct system, but not less than 160°F. (71°C.). The operating temperature of the actuating device may be increased to not more than 286°F. (141°C.) when located in a smoke-control system complying with Chapter 9.

713.12 Installation. Fire assemblies shall be installed in accordance with their listing. Only fire dampers labeled for use in dynamic systems shall be installed in heating, ventilation and air-conditioning systems intended to operate with fans on during a fire.

713.13 Signs. When required by the building official, a sign shall be displayed permanently near or on each required fire door in letters not less than 1 inch (25 mm) high to read as follows:

FIRE DOOR
DO NOT OBSTRUCT

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