本标准的目的是向设计师和供应商提供有关岩源性质的信息，这些岩源可提供适用于保护海堤、河岸、坝面和其他需要防止波浪作用或流水侵蚀的结构的大型岩块。

The objective of the standard is to provide designers and suppliers with information on the properties of rock sources that may allow the supply of large rock blocks suitable for the protection of sea walls, river banks, dam facings and other structures requiring protection against wave action or erosion caused by flowing water.