A worker is working on a flat roof with an unprotected edge that is 8 feet above the lower level. The worker is performing tasks that take them within 6 feet of the edge. Which of the following fall protection methods is acceptable according to OSHA for this scenario?
- ANo fall protection is required as the height is less than 10 feet.
- BA warning line system alone.
- CA safety monitor system alone.
- DA guardrail system.
Show answer & explanationAnswer & explanation
Correct answer: D. A guardrail system.
OSHA requires fall protection for workers on walking/working surfaces with unprotected sides or edges 6 feet or more above a lower level (1926.501(b)(1)). For heights less than 15 feet, a guardrail system is a standard and acceptable form of fall protection. Warning lines and safety monitor systems alone are generally for roofing work on low-slope roofs (4:12 or less) and typically in conjunction with other systems or for specific distance thresholds.
Why the other options are wrong
- A. Fall protection is required at 6 feet or more for general construction, not 10 feet.
- B. Warning lines alone are generally not sufficient for general construction work and need to be combined with other systems or used in specific roofing contexts.
- C. A safety monitor system alone is generally only permitted for roofing work on low-slope roofs under specific conditions and usually requires additional measures.
General Fall Protection (6 ft)
For general construction, OSHA requires fall protection for unprotected sides and edges of walking/working surfaces that are 6 feet or more above a lower level. Common methods include guardrail systems, safety net systems, or personal fall arrest systems.
- The 6-foot rule is a general construction standard.
- Different thresholds exist for specific tasks like scaffolding (10 ft) or steel erection (15 ft).
- Guardrails are a passive fall protection system, meaning they don't require worker action.
Memory trick: Guard, Net, Harness — Your Fall Defense.