阿里A14的目的。4-2018的目的是在条件不可行或不允许架设临时楼梯或坡道的任何施工或拆除作业期间，为生命和肢体提供合理的安全。本标准提供了在施工和拆除作业中，为临时通道建造工作木梯时，遵守最低要求规范的指南。

The purpose of ALI A14.4-2018 is to provide reasonable safety for life and limb during any construction or demolition operation where conditions are not practical or permit the erection of temporary stairs or ramps. This standard provides a guide for compliance with minimum required specifications when job-made wooden ladders are being constructed for temporary access on construction and demolition operations.