本书的目的是为统一的质量和性能提供基础。本规范包含的信息应对起重机的购买者和使用者以及工程和建筑专业有所帮助。虽然大部分信息必须是一般性的，但列出的项目可与个别制造商进行检查，并进行比较，从而优化设备的选择。

The purpose of this book is to provide a basis for uniform quality and performance. This specification contains information which should be helpful to the purchasers and users of cranes and to the engineering and architectural professions. While much of this information must be of a general nature, the items listed may be checked with individual manufacturers and comparisons made which can lead to optimum selection of equipment.