ASTM E2957 - 17

    Standard Test Method for Resistance to Wildfire Penetration of Eaves, Soffits and Other Projections

    Active Standard ASTM E2957 | Developed by Subcommittee: E05.14

    Book of Standards Volume: 04.07


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    Significance and Use

    5.1 The test method described herein monitors the fire characteristics and the ability of eave overhangs and other projections to resist exterior fire penetration from underneath under the specified fire exposure conditions.

    5.2 Representative joints and other characteristics of the eave overhang or projection shall be included in the test specimen when these details are representative of the end-use construction.

    5.3 The test method does not apply to vents or perforated materials used to enclose or cap eaves, soffits, and other projections.

    Note 1: Test Methods E2912 and E2886/E2886M are methods used to test vents or perforated materials to resist direct flame impingement and flame penetration into the building.

    5.4 The test method is devised for eave overhangs and other projections independent of the materials covering the building envelope.

    Note 2: Heat contribution from burning materials covering the building envelope beyond the prescribed fire exposure is not considered in this test method.

    5.5 The test method does not necessarily represent the expected performance of eave overhang and projections under all actual fire conditions, but it does provide a basis for comparing eave overhang and projections materials when subjected to the test procedure described herein.

    5.6 In this procedure, the test specimen is subjected to specific laboratory fire test conditions. If different test conditions are substituted or the anticipated end-use conditions are changed, it is not known whether it is possible by use of this test to predict changes in the performance characteristics measured. Therefore, the results are strictly valid only for the fire test conditions and construction tested.

    5.7 The test method does not provide any basis for determining the fire resistance characteristics of eave overhangs or projections when exposed to a fire originating in the building.

    5.8 The test method does not address interior or exterior flame spread.

    1. Scope

    1.1 This fire-test-response standard prescribes a method for qualitatively assessing the resistance to fire penetration of eave overhangs and other projections, such as the soffits of roof eaves and cantilevered floor projections, when exposed to direct flame impingement from a simulated external wildfire exposure, such as encountered in a “Wildland Urban Interface” scenario. This test method provides data suitable for comparing the relative performance of materials, which are used as the exposed underside surfaces of eave overhangs and other projections.

    1.2 This test method measures the ability of eave overhangs and other projections to resist fire penetration from the exterior into the wall cavity or unexposed side of the test specimen under the conditions of exposure.

    1.3 This test method is applicable to eave overhangs and other projections such as the soffits of roof eaves and cantilevered floor projections intended for use with either combustible or noncombustible building envelopes.

    1.4 Limitations of the test method are listed in Section 5.

    1.5 The values stated in metric units are to be regarded as the standard. Values in parentheses are for information only.

    1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    1.7 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled laboratory conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products or assemblies under actual fire conditions.

    1.8 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.

    1.9 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (including those in tables and figures) shall not be considered as requirements of the standard.

    1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C1396 Specification for Gypsum Board

    D2898 Practice for Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing

    D4442 Test Methods for Direct Moisture Content Measurement of Wood and Wood-Based Materials

    D4444 Test Method for Laboratory Standardization and Calibration of Hand-Held Moisture Meters

    D6662 Specification for Polyolefin-Based Plastic Lumber Decking Boards

    D7032 Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails

    E176 Terminology of Fire Standards

    E631 Terminology of Building Constructions

    E2707 Test Method for Determining Fire Penetration of Exterior Wall Assemblies Using a Direct Flame Impingement Exposure

    E2886/E2886M Test Method for Evaluating the Ability of Exterior Vents to Resist the Entry of Embers and Direct Flame Impingement

    E2912 Test Method for Fire Test of Non-Mechanical Fire Dampers Used in Vented Construction

    Other Standards

    ISO 13943 Fire SafetyVocabulary Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.

    NFPA 286 Standard Methods of Fire Tests for Evaluating Contribution of Wall and Ceiling Interior Finish to Room Fire Growth Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7471, http://www.nfpa.org.


    ICS Code

    ICS Number Code 13.220.50 (Fire-resistance of building materials and elements); 91.060.20 (Roofs)

    UNSPSC Code

    UNSPSC Code 30151800(Siding and exterior wall materials)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/E2957-17

    Citation Format

    ASTM E2957-17, Standard Test Method for Resistance to Wildfire Penetration of Eaves, Soffits and Other Projections , ASTM International, West Conshohocken, PA, 2017, www.astm.org

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