A contractor is working on a commercial building roof 25 feet high. A worker needs to work within 6 feet of the roof edge for 30 minutes. Under Cal/OSHA fall protection requirements, what is acceptable?
Correct Answer
B) Personal fall arrest system or guardrail system
Cal/OSHA Section 1636 requires personal fall arrest systems or guardrail systems for commercial construction work at heights over 6 feet, regardless of duration near the edge.
Why This Is the Correct Answer
Cal/OSHA Section 1636 requires fall protection for commercial construction work at heights over 6 feet when workers are within 6 feet of an unprotected edge. Personal fall arrest systems (harnesses with lanyards) or guardrail systems are the primary acceptable methods. At 25 feet high, this protection is mandatory regardless of work duration. Safety nets alone or monitoring systems are insufficient for this scenario.
Why the Other Options Are Wrong
Option A: Safety net system only
Safety net systems alone are not sufficient for workers within 6 feet of roof edges on commercial construction. Cal/OSHA requires more direct protection methods like personal fall arrest systems or guardrails when working near unprotected edges at this height.
Option C: No protection needed if work is less than 1 hour
Duration of work does not exempt fall protection requirements. Cal/OSHA mandates fall protection for any work over 6 feet high within 6 feet of an unprotected edge, regardless of whether the work takes 30 minutes or several hours.
Option D: Safety monitoring system with competent person
Safety monitoring systems with competent persons are only acceptable in specific limited circumstances and typically for residential construction under 30 feet. For commercial construction at 25 feet near roof edges, more direct fall protection is required.
Memory Technique
Remember 'PG-25': Personal fall arrest or Guardrails required for commercial construction over 25 feet (actually 6+ feet) - no exceptions for time.
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