Personal Fall-Restraint Systems
The anchorage for a fall-restraint system must support at least 3,000 pounds or be designed and installed with a safety factor of at least two.
Fall Protection on Metal Roofs
If you're not sure how much an anchorage will support, have a qualified person evaluate it.
Positioning-Device Systems
Positioning-device systems make it easier to work with both hands free on a vertical surface such as a wall or concrete form. Positioning-device systems are also called Class II work-positioning systems and work-positioning systems.
The components of a positioning-device system - anchorage, connectors, and body support - are similar to those of a personal fall-arrest system. However, the systems serve different purposes.
A positioning-device system provides support and must stop a free fall within 2 feet; a personal-fall-arrest system provides no support and must limit free-fall distance to 6 feet.
- Anchorage: Positioning-device systems must be secured to an anchorage that can support at least twice the potential impact of a worker's fall or 3,000 pounds, whichever is greater.
- Connectors: Connectors must have a minimum strength of 5,000 pounds. Snap hooks and D-rings must be proof-tested to a minimum load of 3,600 pounds without deforming or breaking.
- Body support: A body belt is acceptable as part of a positioning-device system. However, it must limit the arresting force on a worker to 900 pounds and it can only be used for body support. A full-body harness is also acceptable and must limit the arrest force to 1,800 pounds. Belts or harnesses must have side D-rings or a single front D-ring for positioning. All connectors must have locking features to avoid unclipping.
Knowledge Check Choose the best answer for the question.
6-1. Which of the following systems makes it easier to work with both hands free on a vertical surface such as a wall or concrete form?
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