fall factor Archive
One piece of information often lacking in discussion of the Petzl ASAP is just how much rope is needed below the device to be sure it catches during a fall.
In early 2016, I wrote a short piece on Fall Factors. It is published as the article, Fall Factor. It was a brief article with a standard definition and a discussion of each of the following scenarios.
We have done many drop tests at RopeLab over the last few years. For each test, we must make a decision whether to use rigid steel test masses, semi-anthropomorphic test manikins (like Rescue Randy), or human subjects. Often, we
Technicians regularly use toothed-cam ascenders such as the Petzl Croll. For climbing ropes, the chest-mounted Croll is normally used in conjunction with another handled ascender and foot loop. Technicians are generally taught to ensure they are also attached to this
The term ‘Fall Factor’ (FF) is often used to describe the ratio of the distance fallen to the amount of rope in the system that is available to absorb the energy associated with arresting the fall. Fall