For roofing contractors, the final component of the PFAS is an adequately designed and effectively selected roof anchor point, capable of resisting all applied gross-impact forces.
According to the American National Standards Institute, the lanyard must create this inverse ratio of resistance/mass to result in a final, maximum impact force of 1,800 pounds at full deployment of 9 feet, 6 inches. This decelerated impact force is equal to that same 180-pound worker falling almost 2 feet with a non-shock-absorber lanyard. With a final impact within seconds of falling, this force is still a considerable shock to the body.