这是一种测定建筑围护结构整体气密性的方法。它不是一种确定在风和浮力压力的自然影响下，或由于空气处理系统运行产生的压力，通过建筑围护结构发生的实际空气泄漏的方法。该方法适用于配备空气处理系统的建筑物。根据本标准对产品进行测试和评估可能需要使用可能有害的材料和/或设备。 本文件并未涉及与其使用相关的所有安全方面。使用本标准的任何人都有责任在使用本标准之前咨询相关部门，并结合任何现有的适用监管要求制定适当的健康和安全规程。

This is a method for the determination of the overall airtightness of building envelopes. It is not a method for determining the actual air leakage which occurs through a building envelope under the natural influences of wind and buoyancy pressures, or as a result of pressures produced by the operation of air handling systems.This method is applicable to buildings with air handling systems.The testing and evaluation of a product against this standard may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this standard has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any existing applicable regulatory requirements prior to its use.