ASTM_D_5456_-_14b.pdf

Designation:D545614bStandard Specification forEvaluation of Structural Composite Lumber Products1This standard is issued under the fixed designation D5456;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.INTRODUCTIONStructural composite lumber is intended for use as an engineering material for a variety of end-useapplications.The composition of the lumber varies by wood species,adhesive composition,woodelement size,shape,and arrangement.To provide the intended performance,composite lumberproducts require:(1)an evaluation of the mechanical and physical properties and their response toend-use environments,and(2)establishment of and conformance to standard performance specifica-tions for quality.Procedures contained in this specification are also to be used for establishing the design propertiesand for checking the effectiveness of property assignment and quality assurance procedures.The quality assurance sections in this specification are intended to serve as a basis for designingquality-control programs specific to each product.The objective is to ensure that design valuesestablished in the qualification process are maintained.This specification is arranged as follows:SectionQualification6Determination of Allowable DesignStresses7Independent Inspection8Quality Assurance101.Scope1.1 This specification recognizes the complexity of struc-tural glued products.Consequently,this specification coversboth specific procedures and statements of intent that samplingand analysis must relate to the specific product.1.2 This specification was developed in the light of cur-rently manufactured products as defined in 3.2.Materials thatdo not conform to the definitions are beyond the scope of thisspecification.A brief discussion is found in Appendix X2.1.3 Details of manufacturing procedures are beyond thescope of this specification.NOTE1There is some potential for manufacturing variables to affectthe properties of members that are loaded for sustained periods of time.Users of this specification are advised to consider the commentary on thistopic in Appendix X2.1.4 This specification primarily considers end use in dryservice conditions,such as with most protected framingmembers,where the average equilibrium moisture content forsolid-sawn lumber is less than 16%.The conditioning envi-ronment of 6.3 is considered representative of such uses.1.5 The performance of structural composite lumber isaffected by wood species,wood element size and shape,andadhesive and production parameters.Therefore,products pro-duced by each individual manufacturer shall be evaluated todetermine their product properties,regardless of the similarityin characteristics to products produced by other manufacturers.Where a manufacturer produces product in more than onefacility,each production facility shall be evaluated indepen-dently.For additional production facilities,any revisions to thefull qualification program in accordance with this specificationshall be approved by the independent qualifying agency.1.6 This specification is intended to provide manufacturers,regulatory agencies,and end users with a means to evaluate acomposite lumber product intended for use as a structuralmaterial.1.7 This specification covers initial qualification sampling,mechanical and physical tests,analysis,and design value1This specification is under the jurisdiction of ASTM Committee D07 on Woodand is the direct responsibility of Subcommittee D07.02 on Lumber and EngineeredWood Products.Current edition approved Oct.1,2014.Published December 2014.Originallyapproved in 1993.Last previous edition approved in 2014 as D5456 14a.DOI:10.1520/D5456-14B.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 assignments.Requirements for a quality-control program andcumulative evaluations are included to ensure maintenance ofallowable design values for the product.1.8 This specification,or parts thereof,shall be applicable tostructural composite lumber portions of manufactured struc-tural components.1.9 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.1.10 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC384 Test Method for Impedance