1、Designation:C645141Standard Specification forNonstructural Steel Framing Members1This standard is issued under the fixed designation C645;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 parenthes
2、es indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1NOTEFig.2 was revised editorially to remove an unnecessary asterisk in Dec.2015.1.S
3、cope*1.1 This specification covers nonstructural steel framingmembers in interior construction assemblies.1.2 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
4、considered standard.1.3 The following safety hazards caveat pertains only to thetest methods portion,Sections 9 and 10,of this specification:This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to esta
5、blish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A653/A653M Specification for Steel Sheet,Zinc-Coated(Galvanized)or Zinc-Iron Alloy-Coated(Galvannealed)by the Hot-Dip ProcessA1003/A1003M Speci
6、fication for Steel Sheet,Carbon,Metallic-and Nonmetallic-Coated for Cold-FormedFraming MembersC11 Terminology Relating to Gypsum and Related BuildingMaterials and SystemsC475/C475M Specification for Joint Compound and JointTape for Finishing Gypsum BoardC754 Specification for Installation of Steel F
7、raming Mem-bers to Receive Screw-Attached Gypsum Panel ProductsC1002 Specification for Steel Self-Piercing Tapping Screwsfor Application of Gypsum Panel Products or MetalPlaster Bases to Wood Studs or Steel StudsC1396/C1396M Specification for Gypsum Board2.2 AISI Standards:3S100 North American Speci
8、fication for the Design of Cold-Formed Steel Structural Members,2007 editionS220 North American Standard for Cold-Formed SteelFramingNonstructural Members,2011 Edition2.3 ICC-ES Document4ICC-ES-AC86 Acceptance Criteria for Cold-formed SteelFraming MembersInterior Nonload-bearing WallAssembliesApprov
9、ed May 20123.Terminology3.1 DefinitionsDefinitions shall be in accordance withTerminology C11.3.2 Definitions of Terms Specific to This Standard:3.2.1 members,nin screw application of gypsum board,studs,runners(track),hat furring channels,main beams,andcross furring members of grid suspension system
10、s or otheritems manufactured in accordance with this specification.3.2.2 nonstructural wall stud,na member in a steelframed wall system which is limited to a lateral(transverse)load of not more than 10 lb/ft2(480 Pa),a superimposedvertical load,exclusive of sheathing materials,of not more than100 lb
11、f/ft(1460 N/m),or a superimposed vertical load of notmore than 200 lbs(890 N).4.Materials and Manufacture4.1 Members shall be manufactured from steel meeting therequirements of Specification A1003/A1003M.4.2 Members shall have a protective coating conforming toSpecification A653/A653M G40 minimum or
12、 shall have aprotective coating with an equivalent corrosion resistance.1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Related Building Materials and Systems and is the direct responsibilityof Subcommittee C11.02 on Specifications and Test Methods for Accessories an
13、dRelated Products.Current edition approved Nov.1,2014.Published November 2014.Originallyapproved in 1970.Last previous edition approved in 2013 as C645 13.DOI:10.1520/C0645-14E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For
14、 Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American Iron and Steel Institute(AISI),1140 ConnecticutAve.,NW,Suite 705,Washington,DC 20036,http:/www.steel.org.4Available from ICC Evaluation Services,Inc.,5360 Workman
15、 Mill Road,Whittier,CA 90601,www.icc-es.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 States1 4.3 Members shall be manufactured from steel having aminimum thickness,individual
16、 measurement of 0.0179 in.(0.455 mm),before application of protective coating.5.Dimensions and Permissible Variations5.1 Studs and rigid furring channels shall have a configu-ration and steel thickness such that the system in which theyare used will carry the design transverse loads without exceed-ing either the allowable stress of the steel or the allowabledesign deflection.Main beams and cross furring of gridsuspension systems shall be limited to a deflection of L/240.The manufacturer shall su
