ASTM_D_1038_-_19.pdf

Designation:D103819Standard Terminology Relating toVeneer,Plywood,and Wood Structural Panels1,2This standard is issued under the fixed designation D1038;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.INTRODUCTIONThe terms included in this terminology standard are intended to apply to a family of woodveneer-based and wood structural panel products manufactured for use in construction,decorative,andindustrial applications.1.Scope1.1 This standard covers a repository of terms and classifi-cations for the business of Subcommittee D07.03.1.2 The terms in this standard pertain to processing andcharacteristics of wood veneer,plywood,and wood structuralpanels.1.3 The values stated in inch-pound units are to be regardedas the standard.Any SI equivalents provided are approximate.2.Referenced Documents2.1 ASTM Standards:3D1165 Nomenclature of Commercial Hardwoods and Soft-woodsD1554 Terminology Relating to Wood-Base Fiber and Par-ticle Panel MaterialsD5266 Practice for Estimating the Percentage of WoodFailure in Adhesive Bonded Joints2.2 Other Documents:PS 1 Structural Plywood,U.S.Department of CommerceVoluntary Product Standard4PS 2 Performance Standard for Wood-Based Structural-UsePanels,U.S.Department of Commerce Voluntary ProductStandard4ANSI/HPVA HP-1 American National Standard for Hard-wood and Decorative Plywood53.TerminologyVeneer and Plywoodadhesive,nsubstance capable of holding materials togetherby surface attachment.NOTE1Adhesive is the general term and includes,among others,cement,glue,mucilage,and paste.All of these terms are loosely usedinterchangeably.Various descriptive adjectives are applied to the termadhesive to indicate certain characteristics as follows:(1)Physical form,that is,liquid adhesive or tape adhesive.(2)Chemical type,that is,silicate adhesive or resin adhesive.(3)Materials bonded,that is,paper adhesive or metal-plastic adhesive,can label adhesive.(4)Conditions of use,that is,hot-setting adhesive.back,nsurface opposite to the face of a panel,or the poorersurface of a panel in any grade of plywood calling for a faceand back.balanced construction,nSee under construction.banding(railing),nportion of wood or other materialextending around one or more edges of a plywood panel.bleed through,nadhesive or components of adhesive thathave seeped through the outer layer or ply of a bonded woodproduct and that show as a blemish or discoloration on thesurface.blemish,nanything marring the appearance of the veneerthat is not classifiable as a defect.blending,adjcolor change that is detectable at a distance of6 to 8 ft(1.8 to 2.4 m)but which does not detract from theoverall appearance of the panel.blister,nelevation of the surface of an adherend(separationbetween plies),somewhat resembling in shape a blister on1This terminology is under the jurisdiction of ASTM Committee D07 on Woodand is the responsibility of Subcommittee D07.03 on Panel Products.Current edition approved March 1,2019.Published May 2019.Originallyapproved in 1949.Last previous edition approved in 2011 as D1038 11.DOI:10.1520/D1038-19.2These definitions are specific to veneer and plywood.Other definitions relatingto timber appear in ASTM Terminology D9,Relating to Wood,Annual Book ofASTM Standards,Vol 04.10.3For 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.4Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.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 the human skin;its boundaries may be indefinitely outlinedand it may have burst or become flattened.bolt(veneer),nshort log cut to length suitable for peeling ina lathe;also block.bond,nattachment at an interface between an adhesive andan adherend.bond,vto attach materials together by means of an adhesive.borer holes,nvoids made by wood-boring insects.brokengrain(shelling,leafing,grainseparation),nseparation on veneer surface between annual rings.burl,conspicuous,nswirl,twist,or distortion in the grain ofthe wood,usually associated with a knot or crotch,resultingin abrupt color variation and/or a clust