本标准涵盖了安装在平屋顶表面上用于支撑的支撑块 水、天然气、冷凝水或制冷管道、电气导管、管道系统、屋顶走道、， 以及机械设备，并规定了材料、物理特性、， 性能测试和标记。

This Standard covers support blocks intended for installation on flat roof surfaces for supporting water, gas, condensate or refrigeration piping, electrical conduits, ductwork, roof-top walkways, and mechanical equipment, and specifies requirements for materials, physical characteristics, performance testing, and markings.