ASTM C645-09a
(Specification)Standard Specification for Nonstructural Steel Framing Members
Standard Specification for Nonstructural Steel Framing Members
ABSTRACT
This specification covers nonstructural steel framing members in interior construction assemblies. Members shall be manufactured from steel and shall have a protective coating. Studs and rigid furring channels shall have a configuration and steel thickness such that the system in which they are used will carry the design transverse loads without exceeding either the allowable stress of the steel or the allowable design deflection. Members shall be manufactured in such a fashion as to minimize burrs and sharp edges. Penetration test shall be done for performance requirements, where members shall be capable of pulling the head of the screw below the surface of the gypsum board without spin out. Apparatus and materials shall satisfy the testing requirements of the specification.
SCOPE
1.1 This specification covers nonstructural steel framing members in interior construction assemblies.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 The following safety hazards caveat pertains only to the test methods portion, Sections 9 and 10, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: C645 – 09a
Standard Specification for
1
Nonstructural Steel Framing Members
This standard is issued under the fixed designation C645; the number immediately following the designation indicates the year of
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 (´) 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* Plaster Bases to Wood Studs or Steel Studs
2.2 AISI Standard:
1.1 This specification covers nonstructural steel framing
S100 NorthAmerican Specification for the Design of Cold-
members in interior construction assemblies.
3
Formed Steel Structural Members, 2007 edition
1.2 The values stated in inch-pound units are to be regarded
AISI COSP Code of Standard Practice for Cold-Formed
as standard. The values given in parentheses are mathematical
Steel Structural Framing Committee on Framing Stan-
conversions to SI units that are provided for information only
3
dards, 2005 Edition
and are not considered standard.
4
2.3 ICC-ES Document
1.3 The following safety hazards caveat pertains only to the
ICC-ES-AC86 Acceptance Criteria for Steel Studs and
test methods portion, Sections 9 and 10, of this specification:
Gypsum-Board Interior Nonload-Bearing Walls—
This standard does not purport to address all of the safety
Complete Construction—AC86—Approved July 1995
concerns, if any, associated with its use. It is the responsibility
(Editorially revised September 2005) (Formerly ICBO
of the user of this standard to establish appropriate safety and
AC86 dated July 1995)
health practices and determine the applicability of regulatory
limitations prior to use.
3. Terminology
2. Referenced Documents 3.1 Definitions—Definitions shall be in accordance with
2
Terminology C11.
2.1 ASTM Standards:
3.2 Definitions of Terms Specific to This Standard:
A653/A653M Specification for Steel Sheet, Zinc-Coated
3.2.1 members, n—in screw application of gypsum board,
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)
studs, runners (track), hat furring channels, main beams and
by the Hot-Dip Process
cross furring members of grid suspension systems or other
A1003/A1003M Specification for Steel Sheet, Carbon,
items manufactured in accordance with this specification.
Metallic- and Nonmetallic-Coated for Cold-Formed Fram-
3.2.2 nonstructural wall stud, n—a member in a steel
ing Members
framed wall system which is limited to a lateral (transverse)
C11 TerminologyRelatingtoGypsumandRelatedBuilding
2
load of not more than 10 lb/ft (480 Pa), a superimposed
Materials and Systems
verticalload,exclusiveofsheathingmaterials,ofnotmorethan
C475/C475M Specification for Joint Compound and Joint
100 lbf/ft (1460 N/m), or a superimposed vertical load of not
Tape for Finishing Gypsum Board
more than 200 lbs (890 N).
C1396/C1396M Specification for Gypsum Board
C754 Specification for Installation of Steel Framing Mem-
4. Materials and Manufacture
bers to Receive Screw-Attached Gypsum Panel Products
4.1 Members shall be manufactured from steel meeting the
C1002 Specification for Steel Self-PiercingTapping Screws
requirements of Specification A1003/A1003M.
for the Application of Gypsum Panel Products or Metal
4.2 Members shall have a protective coating conforming to
Specification A653/A653M – G 40 minimum or shall have a
1
This specification is under the jurisdiction of ASTM Committee C11 on
protective coating with an equivalent corrosion resistance.
Gypsum and Related Building Materials and Systems and is the direct responsibility
4.3 Members shall be manufactured from steel having a
of Subcommittee C11.02 on Specifications and Test Methods for Accessories and
minimum thickness, individual measurement of 0.0179 in.
Related Products.
Current edition approved Nov. 15, 2009. Published December 2009. Originally (0.455 mm) before application of protective coating.
approved in 1970. Last previous edition approved in 2009 as C645 – 09. DOI:
10.1520/C0645-09A.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American Iron and Steel Institute (AISI), 1140 Connecticut
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Ave., NW, Suite 705, Washington, DC 20036, http://www.steel.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from ICC Evaluation Services, Inc., 5360 Workman Mill Road,
the ASTM website. Whittier, CA 90601, www.icc-es.org.
*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.
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C645 – 09a
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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C645–09 Designation: C 645 – 09a
Standard Specification for
1
Nonstructural Steel Framing Members
This standard is issued under the fixed designation C 645; the number immediately following the designation indicates the year of
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 (´) 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 nonstructural steel framing members in interior construction assemblies.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 The following safety hazards caveat pertains only to the test methods portion, Sections 9 and 10, of this specification: This
standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior
to use.
2. Referenced Documents
2
2.1 ASTM Standards:
A653/A653M Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the
Hot-Dip Process
A1003/A1003M Specification for Steel Sheet, Carbon, Metallic- and Nonmetallic-Coated for Cold-Formed Framing Members
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
C475/C475M Specification for Joint Compound and Joint Tape for Finishing Gypsum Board
C1396/C1396M Specification for Gypsum Board
C754 Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products
C1002 Specification for Steel Self-Piercing Tapping Screws for the Application of Gypsum Panel Products or Metal Plaster
Bases to Wood Studs or Steel Studs
2.2 AISI Standard:
Specification for the Design of Cold-Formed Steel Structural MembersS100 North American Specification for the Design of
3
Cold-Formed Steel Structural Members, 2007 edition
AISI COSP Code of Standard Practice for Cold-Formed Steel Structural Framing Committee on Framing Standards—2005
3
EditionStandards, 2005 Edition
4
2.3 ICC-ES Document
ICC-ES-AC86 Acceptance Criteria for Steel Studs and Gypsum-Board Interior Nonload-Bearing Walls—Complete
Construction—AC86—Approved July 1995 (Editorially revised September 2005) (Formerly ICBO AC86 dated July 1995)
3. Terminology
3.1 Definitions—Definitions shall be in accordance with Terminology C11.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 members, n—in screw application of gypsum board, studs, runners (track), hat furring channels, main beams and cross
furring members of grid suspension systems or other items manufactured in accordance with this specification.
3.2.2 nonstructural wall stud, n—a member in a steel framed wall system which is limited to a lateral (transverse) load of not
2
more than 10 lb/ft (480 Pa), a superimposed vertical load, exclusive of sheathing materials, of not more than 100 lbf/ft (1460
N/m), or a superimposed vertical load of not more than 200 lbs (890 N).
1
This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility of
Subcommittee C11.02 on Specifications and Test Methods for Accessories and Related Products.
CurrenteditionapprovedJulyNov.15,2009.PublishedSeptemberDecember2009.Originallyapprovedin1970.Lastpreviouseditionapprovedin20082009asC645–08a.
DOI: 10.1520/C0645-09.C 645 – 09.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American Iron and Steel Institute (AISI), 1140 Connecticut Ave., NW, Suite 705, Washington, DC 20036, http://www.steel.org.
4
Available from ICC Evaluation Services, Inc., 5360 Workman Mill Road, Whittier, CA 90601, www.icc-es.org.
*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.
1
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C 645 – 09a
4. Materials and Manufacture
4.1 Members shall be manufactured fr
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