ASTM C843-17 PDF Download

The ASTM C843-17 standard outlines the minimum requirements and application methods for gypsum veneer plaster. The standard emphasizes the importance of following applicable building code regulations when a specific degree of fire resistance is required for veneer plaster systems. To achieve the required fire resistance, construction details should be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories.

Additionally, when a specific degree of sound control is needed for veneer plaster assemblies, the construction details should comply with official reports of tests conducted in recognized sound testing laboratories, according to the applicable sound tests of Test Methods E90, C423, or E492. It is recommended to coordinate this specification with Specification C844 to ensure favorable results.

The standard includes two appendices that provide valuable additional information. Appendix X1 covers general contractual matters related to veneer plaster work, while Appendix X2 provides additional technical information related to veneer plastering.

It is important to note that the standard references explanatory notes and footnotes, which provide additional clarification but should not be considered as mandatory requirements of the specification.