ISO 20332:2016规定了基于极限状态法对起重机钢结构进行能力证明测定的一般条件、要求、方法和参数值。它与ISO 8686适用部分的荷载和荷载组合一起使用。 ISO 20332:2016是通用标准，涵盖了所有类型的起重机。其他国际标准可以为特定起重机类型提供具体的能力证明要求。 通过理论计算和/或测试确定能力证明，旨在通过确定强度极限（例如屈服、极限、疲劳和脆性断裂）来防止与结构性能相关的危险。 根据ISO 8686-1，能力证明计算有两种通用方法:采用局部安全系数的极限状态法和采用整体安全系数的容许应力法。 尽管ISO 20332不排除许用应力法的有效性，但它仅涉及极限状态法。 本国际标准不包括附件（如扶手、楼梯、走道、舱室）部件的能力证明计算。然而，需要考虑此类附件对主体结构的影响。

ISO 20332:2016 sets forth general conditions, requirements, methods, and parameter values for performing proof-of-competence determinations of the steel structures of cranes based upon the limit state method. It is intended to be used together with the loads and load combinations of the applicable parts of ISO 8686. ISO 20332:2016 is general and covers cranes of all types. Other International Standards can give specific proof-of-competence requirements for particular crane types. Proof-of-competence determinations, by theoretical calculations and/or testing, are intended to prevent hazards related to the performance of the structure by establishing the limits of strength, e.g. yield, ultimate, fatigue, and brittle fracture. According to ISO 8686？1 there are two general approaches to proof-of-competence calculations: the limit state method, employing partial safety factors, and the allowable stress method, employing a global safety factor. Though it does not preclude the validity of allowable stress methodology, ISO 20332 deals only with the limit state method. Proof-of-competence calculations for components of accessories (e.g. handrails, stairs, walkways, cabins) are not covered by this International Standard. However, the influence of such attachments on the main structure needs to be considered.