What should the D-ring attachment level be in a fall arrest system?

In a fall arrest system, the D-ring attachment should be positioned at shoulder level. This height is optimal for several reasons. First, it allows for better distribution of forces in the event of a fall, as the body is better aligned with the point of attachment. When the D-ring is at shoulder level, it minimizes the risk of excessive lateral loads that can occur if the D-ring is positioned too far down or up, which can lead to increased risk of injury or ineffective fall protection.

A shoulder-level D-ring also helps ensure that the harness fits snugly against the body, reducing the likelihood of the harness riding up during a fall, which could interfere with its effectiveness. Furthermore, having the D-ring at this height enables the worker to maintain freedom of movement while still being securely attached to the fall protection system, thus promoting safety and efficiency on the job.