OSHA 30 Hour Construction Program Practice Test

When using a Personal Fall Arrest System (PFAS), what is the maximum arresting force that should be limited to?

1. 500 lbs

2. 700 lbs

3. 900 lbs

4. 1000 lbs

The correct answer is: 900 lbs

The correct limitation for the maximum arresting force when using a Personal Fall Arrest System (PFAS) is 900 pounds. The rationale behind this standard is to minimize the risk of injury to a worker during a fall. PFAS are designed to catch individuals who fall, and the forces applied to the body in such an event can lead to serious injuries if not controlled. The specific maximum arresting force guideline of 900 pounds is established to ensure that the body is protected from excessive impact forces during a fall, providing a balance between safety and effectiveness. This standard is rooted in thorough testing and research, where it was determined that forces exceeding this limit could lead to severe trauma. In contrast, lower forces such as those in the range of 500 to 700 pounds may not sufficiently account for the dynamic forces experienced during a fall, depending on the circumstances and equipment in use. Exceeding the threshold of 900 pounds could result in greater risk for the individual using the fall protection system, leading to serious injuries or fatalities. Therefore, adhering to the 900-pound guideline is crucial for ensuring the safety and health of construction workers.