ASTM_D_7032_-_14.pdf

Designation:D703214Standard Specification forEstablishing Performance Ratings for Wood-PlasticComposite Deck Boards and Guardrail Systems(Guards orHandrails)1This standard is issued under the fixed designation D7032;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 covers the procedures to establish aperformance rating for wood-plastic composite(WPC)deckboards.This specification also defines the procedures toestablish a performance rating for WPC guards and handrails.The purpose of this specification is to establish the basis forcode recognition of these products or systems in exteriorapplications where combustible construction is allowed(seeX1.1).NOTE1While WPCs may contain wood fiber,the presence of woodfiber in the composite is not required by this standard.Other lignocellu-losic materials may be used.For WPC deck boards and guardrail systemsevaluated according to this standard,the structural,physical,and fireattributes may or may not exhibit similarity to those of wood due to thepresence,type,and quantity of plastic(s)in the composite.WPCs shouldnot be assumed to behave similarly to wood.For example,to address theinfluence of plastic in the composite,special considerations in the standardaddress sensitivity to temperature,ultraviolet(UV)exposure,and freeze-thaw resistance.1.2 Deck boards,guards,and handrails covered by thisspecification are permitted to be of any code compliant shapeand thickness(solid or non-solid).NOTE2While WPCs are produced in a broad range of ratios of fiberto resin it is recognized that the performance requirements in thisspecification are valid for any material or combination of materials usedas deck boards,guards,or handrails.For products made primarily fromresin,or for products that exhibit highly plastic properties(for example,more than 3%strain without rupture in a standard flexural test underambient conditions),users are directed to Specification D6662 foradditional guidance.1.3 A deck board,and a deck board used as a stair tread,areassigned a span rating indicating its ability to comply withmodel code specified functions identified for its specific enduse.A guard or handrail is recognized for its ability to meetminimum code requirements specified in the appropriate modelbuilding code.1.4 Details of manufacturing processes may be proprietaryand are beyond the scope of this specification.1.5 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.1.6 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 requirements prior to use.1.7 Table of Contents:SectionScope1Referenced Documents2Terminology3General Requirements4Sampling4.1Sample Size4.2Conditioning4.3Flexural Tests4.4Temperature and Moisture Effects4.5Ultraviolet(UV)Resistance Test4.6Freeze-Thaw Resistance Test4.7Biodeterioration Tests4.8Fire Performance Tests4.9Deck Board Performance Requirements5General5.1Flexural Performance Tests5.2Determination of the Unadjusted AllowableLoad5.3Creep-Recovery Test5.4Mechanical Fastener Holding Tests5.5Slip Resistance Test5.6Guard and Handrail PerformanceRequirements6General6.1Guardrail System Test Requirements6.2One-and Two-Family DwellingRequirements6.2.1.1Handrail Test Requirements(ConcentratedLoad)6.3Report7Independent Inspection8Manufacturing Standard9Precision and Bias10Keywords11Two-Span Test MethodAnnex A1CommentaryAppendix X11This 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 Dec.1,2014.Published January 2015.Originallyapproved in 2004.Last previous edition approved in 2010 as D7032 10A.DOI:10.1520/D7032-14.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.Referenced Documents2.1 ASTM Standards:2D9 Terminology Relating to Wood and Wood-Based Prod-uctsD198 Test Methods of Static Tests of Lumber in StructuralSizesD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD883 Terminology Relating to PlasticsD1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsD1413 Test Method for Wood Preservatives by LaboratorySoil-Block CulturesD1554 Terminology Relating to Wood-Base Fiber and Par-ticle Panel MaterialsD1761 Test Methods for Mechanical Fasteners in WoodD1929 Test Me