ASTM_C_11_-_17.pdf

Designation:C1117Standard Terminology Relating toGypsum and Related Building Materials and Systems1This standard is issued under the fixed designation C11;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This standard covers terminology relating to gypsumand related building materials and systems.The terms aregenerically defined.More specific and expanded definitionsmay appear in appropriate standards.1.2 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:2C22/C22M Specification for GypsumC28/C28M Specification for Gypsum PlastersC35 Specification for Inorganic Aggregates for Use in Gyp-sum PlasterC36/C36M Specification for Gypsum Wallboard(With-drawn 2004)3C37/C37M Specification for Gypsum Lath(Withdrawn2004)3C52 Specification for Gypsum Partition Tile Or Block(Withdrawn 1982)3C59/C59M Specification for Gypsum Casting Plaster andGypsum Molding PlasterC61/C61M Specification for Gypsum Keenes CementC317/C317M Specification for Gypsum ConcreteC318/C318M Specification for Gypsum FormboardC472 Test Methods for Physical Testing of Gypsum,Gyp-sum Plasters and Gypsum ConcreteC473 Test Methods for Physical Testing of Gypsum PanelProductsC475/C475M Specification for Joint Compound and JointTape for Finishing Gypsum BoardC843 Specification for Application of Gypsum Veneer Plas-terC557 Specification for Adhesives for Fastening GypsumWallboard to Wood FramingC587 Specification for Gypsum Veneer PlasterC588/C588M Specification for Gypsum Base for VeneerPlasters(Withdrawn 2005)3C954 Specification for Steel Drill Screws for theApplicationof Gypsum Panel Products or Metal Plaster Bases to SteelStuds from 0.033 in.(0.84 mm)to 0.112 in.(2.84 mm)inThicknessC1007 Specification for Installation of Load Bearing(Trans-verse and Axial)Steel Studs and Related AccessoriesC1396/C1396M Specification for Gypsum BoardE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE96/E96M Test Methods for Water Vapor Transmission ofMaterialsE119 Test Methods for Fire Tests of Building Constructionand MaterialsE337 Test Method for Measuring Humidity with a Psy-chrometer(the Measurement of Wet-and Dry-Bulb Tem-peratures)3.Terminologyaccelerator,na material that reduces setting time.accessories,nproducts fabricated for the purpose of formingcorners,edges,control joints,or decorative effects.adhesive,na substance capable of holding materials togetherby surface attachment.admixture,na material other than water,aggregates,hydrau-lic cementitious material,and fiber reinforcement that isused as an ingredient to modify properties and is added to thebatch before or during its mixture.aggregate,nan inert granular material which may be addedto gypsum plasters.(C35)all purpose compound,na compound formulated andmanufactured to serve as both a taping and a finishingcompound.1This terminology is under the jurisdiction of ASTM Committee C11 onGypsum and Related Building Materials and Systems and is the direct responsibilityof Subcommittee C11.91 on Terminology and Editorial.Current edition approved May 15,2017.Published June 2017.Originallyapproved in 1916.Last previous edition approved in 2016 as C11 16.DOI:10.1520/C0011-17.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright 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 anhydrite,nthe mineral consisting primarily of anhydrouscalcium sulfate,CaSO4.arris(of an arch),nthe outside corner or angle formed bythe meeting of a wall surface with the curved surface of anarch(see Fig.1).base coat,nany or all layers of plaster in place prior toapplication of finish coats.DISCUSSIONThe first application is normally called a scratch coatand the second application is referred to as a brown coat.bedding coat,nthat coat of plaster to receive aggregate orother decorat