Fall protection: the 6-foot rule, and what a fall arrest system actually needs

Fall protection is the most frequently cited OSHA standard in construction, year after year — and the equipment side of it is a defined, purchasable checklist. Here is the rule in plain language and gear that maps to it.

The rule: 29 CFR 1926.501

• The 6-foot trigger: on walking/working surfaces with an unprotected side or edge 6 feet or more above a lower level, workers must be protected by guardrails, a safety net, or a personal fall arrest system (1926.501(b)(1)). Residential construction has its own paragraph (b)(13) with the same 6-foot trigger.
• A personal fall arrest system (PFAS) under 1926.502(d) is three things working together — anchorage, full-body harness, and connector (lanyard with shock absorber, or self-retracting lifeline). Body belts have not been acceptable for fall arrest since 1998.
• The anchor is the hard part: it must hold 5,000 pounds per worker attached, or be designed by a qualified person with a 2:1 safety factor (1926.502(d)(15)). A roof anchor screwed to a truss per its instructions is a rated product; a railing or vent pipe is not.
• Rig to limit free fall to 6 feet and to keep the worker from contacting a lower level — which is arithmetic (lanyard length + deceleration distance + your height) done before stepping out, not after.
• Inspect before each use, and remove any component that has arrested a fall from service (1926.502(d)(21)). The harness label is where ANSI/ISEA Z359.11 — the harness standard itself — appears.

What auditors and hiring clients look at

• Inspection records. Harnesses are inspected before each use and periodically by a competent person — a dated tag or log is the evidence.
• Age and history. Webbing lives a hard outdoor life; follow the manufacturer's service-life guidance and retire anything that has taken a fall.
• Training documentation (1926.503) — the gear is inseparable from proof that workers were trained to use it.
• Safety-questionnaire answers that match the trailer. Fall-protection programs get the closest look in hiring-client safety reviews; the equipment list you claim is the one to actually own.

Common questions

At what height does OSHA require fall protection in construction?

Six feet above a lower level on walking/working surfaces with unprotected sides or edges (1926.501(b)(1)) — by guardrails, safety nets, or a personal fall arrest system. Residential construction carries the same 6-foot trigger under its own paragraph. Steel erection and scaffolds have their own thresholds.

What are the three parts of a personal fall arrest system?

Anchorage, full-body harness, and the connector between them (a shock-absorbing lanyard or self-retracting lifeline). All three must be rated and compatible — and body belts have not been legal for fall arrest since 1998.

How strong does a roof anchor need to be?

5,000 pounds per attached worker, unless the system is designed by a qualified person with a two-to-one safety factor (1926.502(d)(15)). That's why the anchor must be a rated product installed to its instructions — not a railing, vent pipe, or whatever is handy.