This article describes a simplified method to calculate a building‐specific subslab to indoor air attenuation factor using data collected during pressure‐field extension testing similar to industry standards for radon mitigation. It also describes a simplified method to calculate the radius of influence for a conventional suction point using a mass flux‐balance model. The analysis is based on three simple measurements: 1) the extraction flow rate, 2) cross‐slab applied vacuum at a radial distance of 3 feet and 3) cross‐slab applied vacuum at a radial distance of 10 ft. The intent is to provide a practitioner with a rapid and useful screening level assessment of whether the benefits of reduced mitigation system costs warrant an investment in a more detailed mathematical analysis of the flow and vacuum data. In addition, provide a practitioner with a way to make real‐time decisions regarding placement of communication test points during pressure‐field extension testing.

中文翻译：

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计算建筑物特定衰减因子和压力场影响半径的简化方法

本文介绍了一种简化的方法，该方法使用类似于缓解mi气的行业标准的压力场扩展测试期间收集的数据来计算建筑物特定的子板，以求出室内空气衰减系数。它还描述了一种简化的方法，该方法使用质量通量平衡模型来计算常规吸入点的影响半径。该分析基于三个简单的测量结果：1）抽气流量； 2）径向距离为3英尺的跨板施加真空； 3）径向距离为10 ft的跨板施加真空。为从业人员提供快速而有用的筛选水平评估，以降低减排系统成本的好处是否值得对流量和真空数据进行更详细的数学分析进行投资。此外，