ASTM C1921/C1921M-22 PDF

Scope: 1.1 This test method details the method for a laboratorybased evaluation of aesthetic damage caused to a non-structural gypsum panel outside 90° corner system when impacted by a hard body. This test’s purpose is to provide comparative information on different gypsum panel corner systems to demonstrate aesthetic robustness and durability by minimizing initial damage. 1.2 There is no known ISO equivalent to this standard. 1.3 Units—The values stated in either SI units or inchpound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems 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.

ASTM C1921/C1921M-22 Referenced Document

ASTM C1002 Standard Specification for Steel Self-Piercing Tapping Screws for Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs
ASTM C1047 Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base
ASTM C11 Standard Terminology Relating to Gypsum and Related Building Materials and Systems
ASTM C1396/C1396M Standard Specification for Gypsum Board*， 2024-04-21 Update
ASTM C475/C475M Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board
ASTM C645 Standard Specification for Nonstructural Steel Framing Members
ASTM C754 Standard Specification for Installation Of Steel Framing Members To Receive Screw-Attached Gypsum Wallboard, Backing Board, Or Water-Resistant Backing Board
ASTM C954 Standard Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness
ASTM F879 Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws

2022 ASTM C1921/C1921M-22 Standard Test Method for Comparative Impact Testing of Gypsum Panel Outside 90° Corner Systems
2021 ASTM C1921/C1921M-21 Standard Test Method for Comparative Impact Testing of Gypsum Panel Outside 90° Corner Systems