本文件规定了手动升降和搬运的建议限制，同时考虑了任务的强度、频率和持续时间。它旨在提供关于评估若干任务变量的要求和建议，以便评估工作人口的健康风险。 本文件适用于手动搬运质量为3？kg或以上的物体，以及中等步行速度，即水平面上的0.5？m/s至1.0？m/s。 本文件以8小时工作日为基础，但也涵盖了更长的工作时间，最长可达12小时。本文件还阐述了对一天中轮班的升降和搬运任务的分析。 本文件不包括物品的固定（无需行走）、物品的推拉或坐姿时的手动操作。ISO？11228系列的其他部分介绍了物体的推拉。 本文件不包括处理人员或动物。 （有关处理人员的更多信息，请参阅ISO/TR 12296。） 本文件不涉及在使用外骨骼等提升辅助设备时手动提升物体的问题，也不涉及孕妇或残疾人的需求。

This document specifies recommended limits for manual lifting, lowering and carrying while taking into account the intensity, the frequency and the duration of the task. It is designed to provide requirements and recommendations on the assessment of several task variables, allowing the health risks for the working population to be evaluated. This document applies to manual handling of objects with a mass of 3？kg or more and to moderate walking speed, i.e. 0,5？m/s to 1,0？m/s on a horizontal level surface. This document is based on an 8？h working day, but also covers more prolonged working times, up to 12？h. It also addresses the analysis of combined lifting, lowering and carrying tasks in a shift during a day. This document does not cover the holding of objects (without walking), the pushing or pulling of objects or manual handling while seated. The pushing and pulling of objects are covered in the other parts of the ISO？11228 series. This document does not cover handling people or animals. (For further information on handling people, refer to ISO/TR 12296.) This document does not address the manual lifting of objects while using lift-assistive devices such as exoskeletons and does not address the needs of pregnant women or persons with disabilities.