ASTM C645-14
(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 −14
StandardSpecification 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 U.S. Department of Defense.
1. Scope* Plaster Bases to Wood Studs or Steel Studs
C1396/C1396M Specification for Gypsum Board
1.1 This specification covers nonstructural steel framing
3
2.2 AISI Standards:
members in interior construction assemblies.
S100 North American Specification for the Design of Cold-
1.2 The values stated in inch-pound units are to be regarded
Formed Steel Structural Members, 2007 edition
as standard. The values given in parentheses are mathematical
S220 North American Standard for Cold-Formed Steel
conversions to SI units that are provided for information only
Framing—Nonstructural Members, 2011 Edition
and are not considered standard.
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2.3 ICC-ES Document
1.3 The following safety hazards caveat pertains only to the
ICC-ES-AC86 Acceptance Criteria for Cold-formed Steel
test methods portion, Sections 9 and 10, of this specification:
Framing Members—Interior Nonload-bearing Wall
This standard does not purport to address all of the safety
Assemblies—Approved May 2012
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
3. Terminology
health practices and determine the applicability of regulatory
3.1 Definitions—Definitions shall be in accordance with
limitations prior to use.
Terminology C11.
3.2 Definitions of Terms Specific to This Standard:
2. Referenced Documents
3.2.1 members, n—in screw application of gypsum board,
2
2.1 ASTM Standards:
studs, runners (track), hat furring channels, main beams, and
A653/A653M Specification for Steel Sheet, Zinc-Coated
cross furring members of grid suspension systems or other
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)
items manufactured in accordance with this specification.
by the Hot-Dip Process
3.2.2 nonstructural wall stud, n—a member in a steel
A1003/A1003M Specification for Steel Sheet, Carbon,
framed wall system which is limited to a lateral (transverse)
Metallic- and Nonmetallic-Coated for Cold-Formed
2
load of not more than 10 lb/ft (480 Pa), a superimposed
Framing Members
verticalload,exclusiveofsheathingmaterials,ofnotmorethan
C11 Terminology Relating to Gypsum and Related Building
100 lbf/ft (1460 N/m), or a superimposed vertical load of not
Materials and Systems
more than 200 lbs (890 N).
C475/C475M Specification for Joint Compound and Joint
Tape for Finishing Gypsum Board
4. Materials and Manufacture
C754 Specification for Installation of Steel Framing Mem-
4.1 Members shall be manufactured from steel meeting the
bers to Receive Screw-Attached Gypsum Panel Products
requirements of Specification A1003/A1003M.
C1002 Specification for Steel Self-Piercing Tapping Screws
for Application of Gypsum Panel Products or Metal
4.2 Members shall have a protective coating conforming to
Specification A653/A653M G40 minimum or shall have a
protective coating with an equivalent corrosion resistance.
1
This specification is under the jurisdiction of ASTM Committee C11 on
4.3 Members shall be manufactured from steel having a
Gypsum and Related Building Materials and Systems and is the direct responsibility
of Subcommittee C11.02 on Specifications and Test Methods for Accessories and minimum thickness, individual measurement of 0.0179 in.
Related Products.
(0.455 mm), before application of protective coating.
Current edition approved Nov. 1, 2014. Published November 2014. Originally
approved in 1970. Last previous edition approved in 2013 as C645 – 13. DOI:
10.1520/C0645-14.
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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C645−14
TABLE 1 Manufacturing Tolerances
5. Dimensions and Permissible Variations
Drywall Studs, Drywall Track,
A
5.1 Studs and rigid
...
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 − 13 C645 − 14
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 U.S. 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 99 and 10 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 Application of Gypsum Panel Products or Metal Plaster Bases
to Wood Studs or Steel Studs
C1396/C1396M Specification for Gypsum Board
3
2.2 AISI Standards:
S100 North American Specification for the Design of Cold-Formed Steel Structural Members, 2007 edition
S220 North American Standard for Cold-Formed Steel Framing – Nonstructural Framing—Nonstructural Members, 2011
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)Cold-formed Steel Framing Members—Interior Nonload-bearing Wall Assemblies—Approved May 2012
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.
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.
Current edition approved July 1, 2013Nov. 1, 2014. Published July 2013November 2014. Originally approved in 1970. Last previous edition approved in 20112013 as
C645 – 11a.C645 – 13. DOI: 10.1520/C0645-13.10.1520/C0645-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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
---------------------- Page: 1 ----------------------
C645 − 14
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
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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
...
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