ASTM_C_960_-_C_960M_-_04.pdf

Designation:C 960/C 960M 04Standard Specification forPredecorated Gypsum Board1This standard is issued under the fixed designation C 960/C 960M;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.1.Scope*1.1 This specification covers predecorated gypsum boardwhich is designed to be used as the finished surface for wallsor ceilings.NOTE1Specification C 840 contains application procedures for pre-decorated gypsum board.1.2 The values stated in inch-pound units are to be regardedseparately as the standard.Within the text,the SI units areshown in brackets.The values stated in each system shall beused independent of the other.Values from the two systemsshall not be combined.1.3 The following safety hazards caveat pertains only to thetest method portion,Section 10 of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.1.4 The text of this specification references notes andfootnotes that provide explanatory material.These notes andfootnotes(excluding those in tables and figures)shall not beconsidered as requirements of the standard.2.Referenced Documents2.1 ASTM Standards:2C 11 Terminology Relating to Gypsum and Related Build-ing Materials and SystemsC 36/C 36M Specification for Gypsum WallboardC 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 andStorage of Gypsum BoardE 84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE 119 Test Methods for Fire Tests of Building Constructionand Materials3.Terminology3.1 Definitions of terms shall be in accordance with Termi-nology C 11.3.2 Definitions of Terms Specific to This Standard:3.2.1 face,nthe surface of the predecorated gypsumwallboard that is called the finish side.4.Classification4.1 Predecorated gypsum board is furnished in two classesas follows:4.1.1 Class I predecorated gypsum board shall have adecorative sheet or film laminated to the paper surface.4.1.2 Class II predecorated gypsum board shall have adecorative coating applied to the paper surface.5.Materials and Manufacture5.1 Predecorated gypsum board shall consist of a noncom-bustible core,essentially gypsum,surfaced with paper bondedto the core with the face covered with a decorative sheet,film,or coating.5.2 Predecorated gypsum board,type X(special fire resis-tant)designates predecorated gypsum board complying withthis specification that provides not less than 1 h fire-resistancefor boards58in.15.9 mm thick or34h fire-resistance forboards12in.12.7 mm thick,applied parallel with and on eachside of load bearing 2 3 4 wood studs spaced 16 in.406 mmon center with 6d coated nails,178in.48 mm long,0.0915 in.2.32 mm diameter shank,14in.6.4 mm diameter heads,spaced 7 in.178 mm on center with wallboard jointsstaggered 16 in.406 mm on each side of the partition andtested in accordance with the requirements of Test MethodsE 119.NOTE2Consult producers for independent test data on assemblydetails and fire-resistance classifications for other types of construction.1This 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 Jan.1,2004.Published January 2004.Originallyapproved in 1981.Last previous edition approved in 2001 as C 960/C 960M 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.See fire test reports or listings from recognized fire testing laboratories forassembly particulars,materials,and classifications.6.Physical Properties6.1 Flexural strength,humidified deflection,core,end andedge hardness,and nail pull resistance shall be in accordancewith Specification C 36/C 36M.6.2 No part of the test surface shall be disturbed where ClassI predecorated gypsum board is tested by the pick(tape)testdescribed in Section 10.7.Dimensions and Tolerances7.1After decoration,thickness,width,length and endsquareness shall be in ac