1.1 本规范涵盖了石膏贴面抹灰用石膏贴面基层的最低要求和使用方法。 1.2 石膏单板基层不得用作在暴露于异常湿度或温度的区域直接粘接瓷砖、金属或塑料砖的基层。 1.3 应从耐火试验报告、工程评估或公认耐火试验实验室的清单中获取特定组件的施工细节，以达到所需的耐火性。 1.4 如果单板石膏组件和结构需要特定程度的声音控制，则施工细节应符合公认的声音测试实验室根据适用的声音测试、测试方法进行的测试的官方报告 C423 , E90 或 E492 . 1.5 如果本规范更严格（框架的尺寸或厚度； 紧固件间距）大于防火结构，以本规范为准；否则，应以耐火试验报告中描述的结构为准。 1.6 石膏单板基座天花板上方的未加热空间应适当通风（见 附录X3 ). 1.7 以英寸-磅为单位的数值应视为标准值。括号中给出的SI（公制）值是近似值，仅供参考。 1.8 本标准的文本引用了提供解释材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 1.9 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers the minimum requirements for, and methods of, application of gypsum veneer base for gypsum veneer plasters. 1.2 Gypsum veneer base shall not be used as a base for direct adhesive application of ceramic, metal, or plastic tile in areas exposed to abnormal moisture or humidity or temperature. 1.3 Details of construction for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories. 1.4 Where a specific degree of sound control is required for veneer plaster assemblies and constructions, details of construction shall be in accordance with official reports of tests conducted in recognized sound testing laboratories in accordance with the applicable sound tests, Test Methods C423 , E90 , or E492 . 1.5 Where this specification is more stringent (size or thickness of framing; spacing of fasteners) than the fire-rated construction, this specification shall govern; otherwise, the construction described in the fire test report shall govern. 1.6 Unheated spaces above gypsum veneer base ceilings shall be properly ventilated (see Appendix X3 ). 1.7 The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in parentheses are approximate and are provided for information purposes only. 1.8 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.9 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.