1.1 本规范涵盖了用于低层建筑框架墙的空气屏障（AB）材料或系统的最低性能和规范标准。目标用户是AB的购买者、AB的指定人和监管团体。本规范中的规定旨在允许用户设计墙壁性能标准，并增加AB规范，以适应特定的气候位置、功能或预期建筑的设计。在选择空气屏障性能和最小规格时，考虑到了建筑墙的使用寿命。 1.2 本规范主要针对不透明墙的AB。 外部围护结构的其他区域，如屋顶、地板和这些区域之间的接口，不包括在本规范中。 1.3 本规范不涉及空气泄漏到墙壁空腔，即风吹。目前还没有制定标准化测试来充分识别所有影响因素，并衡量这种影响对墙体热性能的影响。 1.4 本标准中的规范不用于能源负荷计算，也不基于预期的能源消耗水平。 1.5 以英寸-磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.6 以下安全隐患警告仅适用于测试方法部分， 附件A1 。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers minimum performances and specification criteria for an air barrier (AB) material or system for framed walls of low-rise buildings. The intended users are purchasers of the AB, specifiers of the AB and regulatory groups. The provisions contained in this specification are intended to allow the user to design the wall performance criteria and increase AB specifications to accommodate a particular climate location, function, or design of the intended building. Air barrier performance and specification minimums were selected with the service life of the building wall in mind. 1.2 This specification focuses on ABs for opaque walls. Other areas of the exterior envelope, such as roofs, floors, and interfaces between these areas are not included in this specification. 1.3 This specification does not address air leakage into the wall cavity, that is, windwashing. No standardized test has been developed that adequately identifies all of the influencing factors and measures the impact of this effect on the wall's thermal performance. 1.4 The specifications in this standard are not intended to be utilized for energy load calculations and are not based on an expected level of energy consumption. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 The following safety hazards caveat pertains only to the test method portion, Annex A1 , of this specification. 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. 1.7 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.