Positioning Device Systems

A positioning device system is a harness and a strap or rope that holds you in place while you work on a wall, a form or a pole, so both hands are free. It’s used by ironworkers tying rebar, carpenters on wall forms and others. It supports your weight at the work position, and it limits a short fall. It is not the same as fall arrest or a rope that holds you up for a long drop.

• Construction
• Concrete
• Ironwork

What it is used for

• Rebar work: ironworkers lean back against a lanyard while tying rebar mats on walls and columns. See Rebar & Reinforcing Ironworkers.
• Formwork: carpenters on wall forms, working from a ladder or the form itself. See Concrete Work.
• Pole and tower work with a pole strap, and some work on steel beams and tanks.
• Any task on a vertical or steep surface where you need your hands free and may lean back.

How a positioning system works

• A full-body harness or a body belt designed for positioning has side D-rings. A positioning lanyard or strap attaches to those side or front D-rings and to a secure anchor, usually around a structural member or through a rebar mat connection point.
• The lanyard is kept short and taut, so you lean back against it and are held in place.
• The system limits movement so that you cannot fall far if your footing slips.

OSHA rules for positioning devices

Positioning device systems are covered in 29 CFR 1926.502(e), and the rules include:

• They must be rigged so an employee cannot free fall more than 2 feet.
• They must be secured to an anchorage that can support at least twice the potential impact load of a fall, or 3,000 pounds, whichever is greater.
• Connectors must be drop forged, pressed or formed steel, or equivalent material, with a corrosion-resistant finish and smooth surfaces that won’t damage the connected parts.
• Connecting assemblies must have a minimum tensile strength of 5,000 pounds, and snap hooks must be locking type.
• D-rings and snap hooks must be proof-tested to 3,600 pounds without cracking or deforming.
• Positioning device systems must be inspected before each use for wear, damage and other deterioration, and defective components must be removed from service.

Check the standard for the full wording, and follow the manufacturer’s instructions. State plans and employers may have stricter rules.

Positioning is not fall arrest

• Position and protect: in many jobs, such as work at heights on walls, workers use a positioning lanyard and a separate fall arrest lanyard or self-retracting lifeline. OSHA requires fall protection when working at 6 feet or more, so the positioning system alone may not satisfy the rule. See Fall Protection Basics and Personal Fall Arrest Systems.
• Use a full-body harness that is rated for both. Many harnesses have side D-rings for positioning and a dorsal D-ring for arrest.
• Don’t connect a positioning lanyard to the back D-ring as your only protection, and don’t use a fall arrest lanyard as a positioning lanyard.
• Compare with fall restraint, which keeps you from reaching an edge. See Fall Restraint.

Using a positioning system safely

• Choose a strong anchor that is secure and able to hold at least 3,000 pounds. Rebar and form ties may not be strong enough unless they are rated and installed for it. Check with a competent person. See Anchorage Points.
• Keep the lanyard short. The shorter the slack, the shorter the fall. Adjust it so you can’t drop more than 2 feet.
• Check your footing and work surface, since the system won’t save you from a fall from a ladder or a platform that fails.
• Inspect the harness, strap and connectors before each use for cuts, frays, burns, rust, bent hardware and damaged stitching. See Harness Inspection & Fitting and Fall Gear Inspection.
• Use only locking-type snap hooks, and make sure they’re fully closed. See Connectors & Snap Hooks.
• Reposition anchors as you move. Never work beyond the length of the lanyard or lean farther than designed.
• Have a rescue plan in case a worker is left hanging. See Fall Rescue.

• Don’t anchor to a part that can move, such as an unsecured form panel or a loose rebar mat.
• Don’t use a positioning system when you could fall to a lower level without fall arrest.
• Don’t modify, knot or tie off a strap, or share an anchor beyond its rating.
• Don’t use damaged or unknown equipment.

Positioning system checklist

• Harness fits and has side D-rings for positioning
• Anchor can hold at least 3,000 pounds or twice the potential impact load, whichever is greater
• Lanyard is short enough to limit free fall to 2 feet or less
• Connectors are locking type, proof-tested and undamaged
• Separate fall arrest protection is used wherever a fall to a lower level is possible
• System was inspected before use; rescue plan is in place

Last updated: October 4, 2026