ASTM C1178/C1178M-18 - 1.6.2018
 
1. Scope

1.1 This specification covers coated glass mat water-resistant gypsum backing panel designed for use on ceilings and walls in bath and shower areas as a base for the application of ceramic or plastic tile.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Within the text, the SI units are shown in brackets.

1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

1.4 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.

 
2. Referenced Documents

C1264-19

Standard Specification for Sampling, Inspection, Rejection, Certification, Packaging, Marking, Shipping, Handling, and Storage of Gypsum Panel Products

E119-22

Standard Test Methods for Fire Tests of Building Construction and Materials

C11-23

Standard Terminology Relating to Gypsum and Related Building Materials and Systems

C22-77

Standard Specification for Gypsum

C645-18

Standard Specification for Nonstructural Steel Framing Members

C473-19

Standard Test Methods for Physical Testing of Gypsum Panel Products