标准160规定了基于性能的设计标准，用于根据气候、施工类型和HVAC系统运行情况，预测、减轻或减少对建筑围护结构、材料、组件、系统和家具的水分损害。这些标准包括选择分析程序的标准、输入标准以及评估和使用输出的标准。标准2021版的第160版在第3.1和4.5节中修订了水分设计基准年的定义，并在第6节中添加了相关的评价标准。此外，还包括一种新的天气年数排序方法。

Standard 160 specifies performance-based design criteria for predicting, mitigating, or reducing moisture damage to the building envelope, materials, components, systems, and furnishings—depending on climate, construction type, and HVAC system operation. These include criteria for selecting analytic procedures, criteria for inputs, and criteria for evaluation and use of outputs.The 2021 edition of Standard 160 revises the definition of the moisture-design reference year in Sections 3.1 and 4.5 and adds a related evaluation criterion in Section 6. In addition, a new method for ranking weather years is included.