ASTM_C_630_-_C_630M_-_03e1.pdf

Designation:C 630/C 630M 03e1Standard Specification forWater-Resistant Gypsum Backing Board1This standard is issued under the fixed designation C 630/C 630M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.e1NOTEThe word rating(s)was added to the term fire resistance throughout editorially October 2004.1.Scope*1.1 This specification covers water-resistant gypsum back-ing board that is designed primarily to be used as a base for theapplication of ceramic or plastic tile on walls or ceilings.Thisproduct is also suitable for decoration.NOTE1Specification C 840 contains application procedures forwater-resistant gypsum backing board.1.2 The values stated in either inch-pound units or SI(metric)units are to be regarded separately as standard.Withinthe text,the SI units are shown in brackets.The values statedin each system shall be used independent of the other.Valuesfrom the two systems shall not be combined.1.3 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.2.Referenced Documents2.1 ASTM Standards:2C 11 Terminology Relating to Gypsum and Related Build-ing Materials and SystemsC 473 Test Methods for Physical Testing of Gypsum PanelProductsC 645 Specification for Nonstructural Steel Framing Mem-bersC 840 Specification for Application and Finishing of Gyp-sum BoardC 1264 Specification for Sampling,Inspection,Rejection,Certification,Packaging,Marking,Shipping,Handling,and Storage of Gypsum BoardE 11Test Methods for Fire Tests of Building Constructionand Materials3.Terminology3.1 Definitions used in this specification shall be in accor-dance with Terminology C 11.4.Materials and Manufacture4.1 Water-resistant gypsum backing board shall consist of anoncombustible water-resistant core,essentially gypsum,sur-faced on both the face and back of the board with waterrepel-lent paper bonded to the core.4.2 Water-resistant gypsum backing board,type X(specialfire-resistant),designates water-resistant gypsum backingboard complying with this specification that provides not lessthan 1-h fire resistance rating for boards58in.15.9 mm thickor34-h fire resistance rating for boards12in.12.7 mm thick,applied parallel with and on each side of load bearing 2 3 4wood studs spaced 16 in.406 mm on center with 6d coatednails,178in.48 mm long,0.0915-in.2.32-mm diametershank,14-in.6.4-mm diameter heads,spaced 7 in.178 mmon center with gypsum backing board joints staggered 16 in.406 mm on each side of the partition and tested in accordancewith the requirements of Test Methods E 119.NOTE2Consult producers for independent test data on assemblydetails and fire resistance ratings for other types of construction.See firetest reports or listings from recognized fire testing laboratories.forassembly particulars,materials,and ratings.5.Physical Properties5.1 Specimens shall be taken from the samples obtained inaccordance with Specification C 1264.5.2 Specimens shall be tested in accordance with TestMethods C 473.5.2.1 Flexural StrengthThe specimens shall be tested faceup and face down.The average breaking load shall be not lessthan the following:Method AMethod B1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Related Building Materials and Systems and is the direct responsibilityof Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.Current edition approved October 1,2003.Published November 2003.Originallyapproved in 1968.Last previous edition approved in 2001 as C 630/C 630M 01.2For 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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International(www.astm.org)for the latest information Thickness,in.mmLoad,lbf NBearing EdgesAcross Fiberof SurfacingLoad,lbf NBearing EdgesParallel toFiber ofSurfacingLoad,lbf NBearing EdgesAcross Fiberof SurfacingLoad,lbf NBearing EdgesParallel toFiber ofSurfacing1212.7110 48940 178107 47636 1605815.9150 66750 222147 65446 2055.2.2 Humidified DeflectionThe specimens shall have anaverage deflection of not more than the following:Thickness,in.mmHumidified Deflection,Eighths of anin.mm1212.710 325815.95 165.2.3 Core,End,and Edge HardnessThe