NFPA 80A - Protection of Buildings from Exterior Fire Exposure

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NFPA 80A: Recommended Practice for Protection of Buildings from Exterior Fire Exposures

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Recommended Practice for Protection of Buildings from Exterior Fire Exposures, 2012 Edition

Through penetrations shall be protected by an approved through- penetration firestop system installed and tested in accordance with ASTM E or UL , with a minimum positive pressure differential of 0. Penetrations of membranes that are part of a horizontal assembly shall comply with Section Penetrations in smoke barriers shall be protected by an approved through- penetration firestop system installed and tested in accordance with the requirements of UL for air leakage. The L rating of the system measured at 0.

Fire-resistant joint systems shall be tested in accordance with Section Exception: Fire-resistant joint systems shall not be required for joints in all of the following locations:. Nonsymmetrical wall joint systems shall be tested with both faces exposed to the furnace, and the assigned fire-resistance rating shall be the shortest duration obtained from the two tests.

Where evidence is furnished to show that the wall was tested with the least fire-resistant side exposed to the furnace, subject to acceptance of the building official , the wall need not be subjected to tests from the opposite side. Exception: For exterior walls with a horizontal fire separation distance greater than 5 feet mm , the joint system shall be required to be tested for interior fire exposure only.

Such systems shall be securely installed and tested in accordance with ASTM E to provide an F rating for a time period not less than the fire-resistance rating of the floor assembly. Height and fire-resistance requirements for curtain wall spandrels shall comply with Section Exception: Voids created at the intersection of the exterior curtain wall assemblies and such floor assemblies where the vision glass extends to the finished floor level shall be permitted to be sealed with an approved material to prevent the interior spread of fire.

Such material shall be securely installed and capable of preventing the passage of flame and hot gases sufficient to ignite cotton waste where subjected to ASTM E time-temperature fire conditions under a minimum positive pressure differential of 0. Fire-rated glazing assemblies shall be marked in accordance with Tables The required fire resistance of an opening protective shall be permitted to be established by any of the following methods or procedures:.

Approved fire door and fire shutter assemblies shall be constructed of any material or assembly of component materials that conforms to the test requirements of Section Fire door frames with transom lights, sidelights or both shall be permitted in accordance with Section Fire door assemblies and shutters shall be installed in accordance with the provisions of this section and NFPA Fire door assemblies required to have a minimum fire protection rating of 20 minutes where located in corridor walls or smoke barrier walls having a fire-resistance rating in accordance with Table Exception: The maximum transmitted temperature rise is not required in buildings equipped throughout with an automatic sprinkler system installed in accordance with Section Fire doors shall be labeled showing the name of the manufacturer or other identification readily traceable back to the manufacturer, the name or trademark of the third-party inspection agency, the fire protection rating and, where required for fire doors in interior exit stairways and ramps and exit passageways by Section Smoke and draft control doors complying with UL shall be labeled as such and shall comply with Section Labels shall be approved and permanently affixed.

The label shall be applied at the factory or location where fabrication and assembly are performed. Exception: In Group I-3 doors that are required to be 45 minutes or higher shall be fire-rated assemblies or certified by the manufacturer as being equivalent to the required standard. Fire doors shall be latching and self- or automatic -closing in accordance with this section.

Automatic -closing doors installed in the following locations shall be automatic -closing by the actuation of smoke detectors installed in accordance with Section Doors that are automatic -closing by smoke detection shall not have more than a second delay before the door starts to close after the smoke detector is actuated:.

Attributes

In Group I-2 and I Glazing in fire window assemblies shall be fire protection rated in accordance with this section and Table Glazing in fire door assemblies shall comply with Section Fire-protection-rated glazing in fire window assemblies shall be tested in accordance with and shall meet the acceptance criteria of NFPA or UL 9. Fire-protection-rated glazing shall comply with NFPA Openings in nonfire-resistance-rated exterior wall assemblies that require protection in accordance with Section Fire-protection-rated glazing in 0. Dampers shall be listed and labeled in accordance with the standards in this section.

Fire dampers shall have the minimum fire protection rating specified in Table Corridor dampers shall have the following minimum ratings:.

Fire Protection Systems: Building Codes and Safety Standards

The fire damper actuation device shall meet one of the following requirements:. The smoke damper shall close upon actuation of a listed smoke detector or detectors installed in accordance with Section Ducts and air transfer openings shall not penetrate enclosures for interior exit stairways and ramps and exit passageways , except as permitted by Sections Exception: Fire dampers are not required at penetrations of fire barriers where any of the following apply:.

Such walls are penetrated by ducted HVAC systems, have a required fire-resistance rating of 1 hour or less, are in areas of other than Group H and are in buildings equipped throughout with an automatic sprinkler system in accordance with Section Such a duct system shall be constructed of sheet steel not less than No.

Ducts and air transfer openings shall not penetrate exit enclosures and exit passageways except as permitted by Sections Shaft enclosures that are permitted to be penetrated by ducts and air transfer openings shall be protected with approved fire and smoke dampers installed in accordance with their listing.

Fire dampers are not required at penetrations of shafts where any of the following criteria are met:. In Group B and R occupancies equipped throughout with an automatic sprinkler system in accordance with Section Exceptions: In occupancies other than Group H and L , fire dampers are not required where any of the following apply:. The duct system is constructed of approved materials in accordance with the California Mechanical Code and the duct penetrating the wall complies with all of the following requirements:.

Fire dampers are not required where the duct system is constructed of approved materials in accordance with the California Mechanical Code and the duct penetrating the wall complies with all of the following requirements:. The duct shall be protected as a through penetration in accordance with Section or shall comply with the all of the following:. A listed smoke damper designed to resist the passage of smoke shall be provided at each point a duct or air transfer opening penetrates a smoke barrier. Smoke dampers and smoke damper actuation methods shall comply with Section Exception: Smoke dampers are not required where the openings in ducts are limited to a single smoke compartment and the ducts are constructed of steel.

A listed smoke damper designed to resist the passage of smoke shall be provided at each point that an air transfer opening penetrates a smoke partition.

Exception: Where the installation of a smoke damper will interfere with the operation of a required smoke control system in accordance with Section , approved alternative protection shall be utilized. In occupancies other than Groups I-2 , I For air transfer openings, see Section Exception: A duct is permitted to penetrate three floors or less without a fire damper at each floor, provided such duct meets all of the following requirements:. Ceiling radiation dampers shall be tested in accordance with Section Ceiling radiation dampers shall be installed in accordance with the details listed in the fire-resistance-rated assembly and the manufacturer's instructions and the listing.

Ceiling radiation dampers are not required where one of the following applies:.


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Duct systems constructed of approved materials in accordance with the California Mechanical Code that penetrate non-fire-resistance-rated floor assemblies shall be protected by any of the following methods:. Exception: Fire dampers are not required in ducts within individual residential dwelling units. Fireblocking shall consist of the following materials:. Fireblocking shall be provided in concealed spaces of stud walls and partitions, including furred spaces , and parallel rows of studs or staggered studs, as follows:. Fireblocking shall be installed within concealed spaces of exterior wall coverings and other exterior architectural elements where permitted to be of combustible construction as specified in Section or where erected with combustible frames.

Fireblocking shall be installed at maximum intervals of 20 feet mm in either dimension so that there will be no concealed space exceeding square feet 9. Where wood furring strips are used, they shall be of approved wood of natural decay resistance or preservative-treated wood. If noncontinuous, such elements shall have closed ends, with not less than 4 inches mm of separation between sections. Fireblocking shall not be required where the exterior wall covering is installed on noncombustible framing and the face of the exterior wall covering exposed to the concealed space is covered by one of the following materials:.

Where wood sleepers are used for laying wood flooring on masonry or concrete fire-resistance-rated floors, the space between the floor slab and the underside of the wood flooring shall be filled with an approved material to resist the free passage of flame and products of combustion or fireblocked in such a manner that there will be no open spaces under the flooring that will exceed square feet 9.

Draftstopping shall be located above and in line with the dwelling unit and sleeping unit separations. In other groups, draftstopping shall be installed so that horizontal floor areas do not exceed 1, square feet 93 m 2. Draftstopping shall be provided in attics , mansards, overhangs or other concealed roof spaces of Group R-2 buildings with three or more dwelling units and in all Group R-1 buildings. Draftstopping shall be installed above, and in line with, sleeping unit and dwelling unit separation walls that do not extend to the underside of the roof sheathing above.

Draftstopping shall be installed in attics and concealed roof spaces , such that any horizontal area does not exceed 3, square feet m 2. Combustible materials shall not be permitted in concealed spaces of buildings of Type I or II construction. Exception: Solid plaster partitions or where otherwise determined by fire tests. Insulating materials, including facings such as vapor retarders and vapor-permeable membranes, similar coverings and all layers of single and multilayer reflective foil insulations, shall comply with the requirements of this section. Where a flame spread index or a smoke-developed index is specified in this section, such index shall be determined in accordance with ASTM E84 or UL Any material that is subject to an increase in flame spread index or smoke-developed index beyond the limits herein established through the effects of age, moisture or other atmospheric conditions shall not be permitted.

Insulating materials, where concealed as installed in buildings of any type of construction, shall have a flame spread index of not more than 25 and a smoke-developed index of not more than Exception: Cellulosic fiber loose-fill insulation complying with the requirements of Section Where such materials are installed in concealed spaces in buildings of Type III , IV or V construction, the flame spread and smoke-developed limitations do not apply to facings, coverings, and layers of reflective foil insulation that are installed behind and in substantial contact with the unexposed surface of the ceiling, wall or floor finish.

Exception: All layers of single and multilayer reflective plastic core insulation shall comply with Section Insulating materials, where exposed as installed in buildings of any type of construction, shall have a flame spread index of not more than 25 and a smoke-developed index of not more than Loose-fill insulation materials that cannot be mounted in the ASTM E84 or UL apparatus without a screen or artificial supports shall comply with the flame spread and smoke-developed limits of Sections Insulation and covering on pipe and tubing shall have a flame spread index of not more than 25 and a smoke-developed index of not more than Exception: Insulation and covering on pipe and tubing installed in plenums shall comply with the California Mechanical Code.

The provisions of this section contain prescriptive details of fire-resistance-rated building elements , components or assemblies. The materials of construction listed in Tables Where materials that change the capacity for heat dissipation are incorporated into a fire-resistance-rated assembly, fire test results or other substantiating data shall be made available to the building official to show that the required fire-resistance-rating time period is not reduced.

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    Appendices to the Fire Code Compendium | Ministry of the Solicitor General

    The provisions of this chapter shall govern the materials, systems and assemblies used for structural fire resistance and fire-resistance-rated construction separation of adjacent spaces to safeguard against the spread of fire and smoke within a building and the spread of fire to or from buildings.

    Fire assemblies that serve multiple purposes in a building shall comply with all of the requirements that are applicable for each of the individual fire assemblies. Section Definitions.


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    Materials prescribed herein for fire resistance shall conform to the requirements of this chapter. The fire-resistance rating of building elements , components or assemblies shall be determined in accordance with the test procedures set forth in ASTM E or UL or in accordance with Section The fire-resistance rating of penetrations and fire-resistant joint systems shall be determined in accordance Sections and , respectively.

    Standard Subscriptions

    Interior walls and partitions of nonsymmetrical construction shall be tested with both faces exposed to the furnace, and the assigned fire-resistance rating shall be the shortest duration obtained from the two tests conducted in compliance with ASTM E or UL Where evidence is furnished to show that the wall was tested with the least fire-resistant side exposed to the furnace, subject to acceptance of the building official , the wall need not be subjected to tests from the opposite side see Section Combustible aggregates are permitted in gypsum and Portland cement concrete mixtures for fire-resistance-rated construction.

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