ASTM_D_8391_-_22.pdf

Designation:D839122Standard Specification forDemonstrating Equivalent Fire Performance for Wood-Based Floor Framing Members to Unprotected 2 by 10Dimension Lumber or Equal-Sized Structural CompositeLumber1This standard is issued under the fixed designation D8391;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification provides the test methodology andprocedures to demonstrate that the fire performance of wood-based floor framing members is equivalent to unprotected 2 by10 dimension lumber or equal-sized structural compositelumber(SCL)floor joists used in interior floor assemblies.Thisspecification is applicable to floor framing members with orwithout applied treatments or materials used to increase fireresistance,including fire-resistive paints,coatings,or chemicaltreatments,and including mechanically attached or adhered fireprotection materials.It is applicable to any wood-based resi-dential floor framing member product including,but notlimited to,prefabricated wood I-joists,open-web wood joists,and trusses with wood flanges and wood or metal webmembers.In addition,specific requirements for the evaluationof fire-resistive paints,coatings,or chemical treatments usedwith these floor framing members are included.NOTE1This specification provides a method of comparing the fireperformance of floor framing members to benchmarked performance ofunprotected 2 by 10 dimension lumber or equal-sized SCL floor joists.Ithas been successfully used to evaluate the performance of prefabricatedwood I-joists and wood trusses with various forms of fire protection.While the principles of this specification are generally applicable to allfloor framing members,the development of the specification did notconsider additional requirements or modifications which may be necessaryfor the evaluation of floor framing members of other materials,such assteel joists or trusses.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D9 Terminology Relating to Wood and Wood-Based Prod-uctsD198 Test Methods of Static Tests of Lumber in StructuralSizesD610 Practice for Evaluating Degree of Rusting on PaintedSteel SurfacesD1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsD1761 Test Methods for Mechanical Fasteners in Wood andWood-Based MaterialsD2898 Practice for Accelerated Weathering of Fire-Retardant-Treated Wood for Fire TestingD2915 Practice for Sampling and Data-Analysis for Struc-tural Wood and Wood-Based ProductsD4761 Test Methods for Mechanical Properties of Lumberand Wood-Based Structural MaterialsD5055 Specification for Establishing and Monitoring Struc-tural Capacities of Prefabricated Wood I-JoistsD5664 Test Method for Evaluating the Effects of Fire-Retardant Treatments and Elevated Temperatures onStrength Properties of Fire-Retardant Treated LumberD7032 Specification for Establishing Performance Ratingsfor Wood-Plastic Composite and Plastic Lumber DeckBoards,Stair Treads,Guards,and HandrailsE119 Test Methods for Fire Tests of Building Constructionand Materials1This specification is under the jurisdiction of ASTM Committee D07 on Woodand is the direct responsibility of Subcommittee D07.05 on Wood Assemblies.Current edition approved Jan.1,2022.Published January 2022.DOI:10.1520/D8391-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1