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ASTM C1925-22

(Test Method)

Standard Test Method for Strength Properties of Direct Hung, Suspended T-bar Type Ceiling System Components Intended to Receive Gypsum Panel Products

Standard Test Method for Strength Properties of Direct Hung, Suspended T-bar Type Ceiling System Components Intended to Receive Gypsum Panel Products

SCOPE
1.1 This test method covers metal ceiling suspension systems used primarily to support screw-attached gypsum panel products.  
1.2 The method of determining strength properties of suspended ceiling grid system components is as follows:    
Tests  
Sections  
Uniform Load Testing  
6 – 10  
Connection Strength Testing  
11 – 15  
Wire Pullout Resistance  
16 – 20  
1.3 The values stated in inch-pound and SI (metric) units are to be regarded separately as standard. Within the text, the SI (metric) units are shown in brackets. The values stated in each system of units shall be used independently of the other. Values from the two systems of units shall not be combined.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Oct-2022
ICS
91.060.30 - Ceilings. Floors. Stairs
Technical Committee
C11 - Gypsum and Related Building Materials and Systems
Drafting Committee
C11.02 - Specifications and Test Methods for Accessories and Related Products
Current Stage
Ref Project

Relations

Refers
ASTM C754-20 - Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products
Effective Date
01-May-2020

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ASTM C1925-22 - Standard Test Method for Strength Properties of Direct Hung, Suspended T-bar Type Ceiling System Components Intended to Receive Gypsum Panel ProductsASTM C1925-22 - Standard Test Method for Strength Properties of Direct Hung, Suspended T-bar Type Ceiling System Components Intended to Receive Gypsum Panel Products
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ASTM C1925-22 - Standard Test Method for Strength Properties of Direct Hung, Suspended T-bar Type Ceiling System Components Intended to Receive Gypsum Panel Products
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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1925 − 22
Standard Test Method for
Strength Properties of Direct Hung, Suspended T-bar Type
Ceiling System Components Intended to Receive Gypsum
1
Panel Products
This standard is issued under the fixed designation C1925; 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.
1. Scope C754 Specification for Installation of Steel Framing Mem-
bers to Receive Screw-Attached Gypsum Panel Products
1.1 This test method covers metal ceiling suspension sys-
E631 Terminology of Building Constructions
tems used primarily to support screw-attached gypsum panel
3
2.2 Other Standards:
products.
AISI S220 NorthAmerican Standard for Cold-Formed Steel
1.2 The method of determining strength properties of sus-
Nonstructural Framing
pended ceiling grid system components is as follows:
Tests Sections
3. Terminology
Uniform Load Testing 6–10
3.1 For definitions relating to building constructions, see
Connection Strength Testing 11–15
Wire Pullout Resistance 16–20 Terminology E631.
1.3 Thevaluesstatedininch-poundandSI(metric)unitsare
3.2 For definitions relating to gypsum and related building
to be regarded separately as standard. Within the text, the SI
materials and systems, see Terminology C11.
(metric) units are shown in brackets. The values stated in each
3.3 Definitions of Terms Specific to This Standard:
system of units shall be used independently of the other.Values
3.3.1 cross runner, n—a member installed perpendicularly
from the two systems of units shall not be combined.
to the main runner members designed to receive screw-
1.4 This standard does not purport to address all of the
attached gypsum panel products.
safety concerns, if any, associated with its use. It is the
3.3.2 grid suspension system, n—a ceiling system composed
responsibility of the user of this standard to establish appro-
of modular interlocking steel components designed to receive
priate safety, health, and environmental practices and deter-
screw-attached gypsum panel product.
mine the applicability of regulatory limitations prior to use.
3.3.3 main runner, n—the main support member of a grid
1.5 This international standard was developed in accor-
suspension system that receives cross runner members.
dance with internationally recognized principles on standard-
3.3.4 suspended ceiling, n—a ceiling in which the main
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- runner members and cross runner members are suspended
below the structural members of the building.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.3.5 ultimate load, n—the maximum load applied before
test specimen failure.
2. Referenced Documents
2
4. Summary of Test Method
2.1 ASTM Standards:
C11 Terminology Relating to Gypsum and Related Building
4.1 This test method can be used to determine the strength
Materials and Systems
properties of nonstructural steel framing members to receive
screw-attached gypsum panel products. Strength properties are
determined by application of uniformly distributed loads to
1
This test method is under the jurisdiction ofASTM Committee C11 on Gypsum
and Related Building Materials and Systems and is the direct responsibility of suspended ceiling main runner and cross runner members,
Subcommittee C11.02 on Specifications and Test Methods for Accessories and
tension and compression loading to splices, and wire pullout
Related Products.
resistance testing.
Current edition approved Nov. 1, 2022. Published December 2022. DOI:
10.1520/C1925-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Iron and Steel (AISI), https://www.steel.org, or the
Standards volume information, refer to the standard’s Document Summary page on Cold-Formed Steel Engineers Institute (CFSEI), https://www.cfsei.org, 25 Massa-
the ASTM website. chusetts Avenue, NW, Suite 800, Washington, DC 20001.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1925 − 22
5. Significance and Use 7.2 Main runner/cross runner members that are part of a fire
resistance rated assembly that contain fire expansion relief
5.1 This test method provides a standard for determining
cutouts sha
...

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1.1 This practice covers the determination of the acceptability of a concrete floor for the installation of resilient flooring.  
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This specification covers the classification, materials of construction, workmanship, physical requirements, and methods of testing glass-fiber-reinforced polyester composite wall and ceiling panels intended for use in light construction and semi-structural applications. The panels shall be divided into four classifications based on relative response to the laboratory flammability: Class A; Class B; Class C; and Class D. These classifications may be further subdivided into grades based on nominal thickness when tested: Grade 1; Grade 2; Grade 3; Grade 4; Grade 5; Grade 6; and Grade 7. The polyester resin used in the composite shall be a thermosetting polyester resin with cross-linking monomers composed of polymeric esters in which the recurring ester groups are an integral part of the main polymer chain. The resin shall be reinforced with glass fibers. Conditioning; length and width; squareness; thickness; camber; color; impact resistance; and burning characteristics tests shall be performed to conform to the requirements specified.
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5.2.1 Establishing compliance of random or fixed-path trafficked floor surfaces with specified tolerances;  
5.2.2 Evaluating the effect of different construction methods on the waviness of the resulting floor surface;  
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SCOPE
1.1 This test method covers data collection and analysis procedures to determine surface flatness and levelness by calculating waviness indices for survey lines and surfaces, elevation differences of defined wheel paths, and levelness indices using SI units.
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1.1.1 The purpose of this test method is to provide the user with floor tolerance estimates as follows:
1.1.1.1 Local survey line waviness and overall surface waviness indices for floors based on deviations from the midpoints of imaginary chords as they are moved along a floor elevation profile survey line. End points of the chords are always in contact with the surface. The imaginary chords cut through any points in the concrete surface higher than the chords.
1.1.1.2 Defined wheel path criteria based on transverse and longitudinal elevation differences, change in elevation difference, and root mean square (RMS) elevation difference.
1.1.1.3 Levelness criteria for surfaces characterized by either of the following methods: the conformance of elevation data to the test section elevation data mean; or by the conformance of the RMS slope of each survey line to a specified slope for each survey line.  
1.1.2 The averages used throughout these calculations are the root mean squares, RMS (that is, the quadratic means). This test method gives equal importance to humps and dips, measured up (+) and down (−), respectively, from the imaginary chords.  
1.1.3 Appendix X1 is a commentary on this test method. Appendix X2 provides a computer program for waviness index calculations based on this test method.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use....

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