6
* Rollout: A process by which a snap hook or carabiner unintentionally disengages from another connector or object to
which it is coupled. (ANSI Z359.0-2007)
4.0 Fall Clearance/Clear Fall Charts
Clearance Requirements
Image 1 shows a shock-absorbing lanyard anchored overhead with the other end connected to the dorsal D-ring of a full
body harness. Note that the length of your shock-absorbing lanyard in relation to where it is attached is directly related to
the amount of fall clearance that you will need. When using a shock-absorbing lanyard, include the following distances in
your calculations:
Using the 6 Foot Hailo Wind Systems Shock-Absorbing Lanyard will require a total fall clearance of approximately 18 feet
(5.5 meters) as measured from the anchorage point of lanyard to the nearest obstruction below. The total fall clearance
combines the sum of the length of the lanyard, the maximum elongation of the lanyard (4 feet or 1.2 meters), the average
distance between the worker’s dorsal D-ring (5 feet or 1.5 meters), and the safety factor (3 feet or 0.9 meters).
Using an extended free fall (12 foot) Hailo Wind Systems Shock Absorbing Lanyard will require a total fall clearance of
approximately 20 feet (6.1 meters) when anchored at foot level and measured from the anchorage point of lanyard to the
nearest obstruction below. The total fall clearance combines the sum of the length of the lanyard, free fall distance, the
maximum elongation of the lanyard (5 feet or 1.5 meters), the average distance between the worker’s dorsal D-ring, (5 feet
or 1.5 meters), and the safety factor (3 feet or 0.9 meters).
