Fall Protection and Ladder Setup on a Two-Story Roof
A crew is installing a 6 kW PV system on a two-story dwelling with a gable roof. The eave is 20 ft above grade, the roof pitch is 7/12, and there is no parapet or permanent anchor. The foreman plans to reach the eave with a 28 ft extension ladder, leaving the top 2 ft above the eave and not tying it off. Workers will wear full-body harnesses with 6 ft lanyards, but the only anchor is a 2x4 nailed to the roof deck. No guardrails or safety nets are on site. One worker plans to stand on the top two rungs to step onto the roof. The crew has fall protection harnesses but no documented training or rescue plan. Weather is dry, and the roof surface is clean.
1. What fall protection does OSHA require for this roof, and why is the 2x4 anchor unacceptable?
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The eave is 20 ft above grade, well above the 6 ft trigger in 1926.501(b). The roof pitch is 7/12, which is steeper than 4/12, so 1926.501(b)(11) applies: employees must be protected by a guardrail system with toe boards, a safety net, or a personal fall arrest system. A nailed 2x4 is not an acceptable anchor. PFAS anchors must support at least 5,000 lb per employee or be designed by a qualified person, and the system must limit free fall to 6 ft or less and arrest force to 1,800 lb. The worker also needs a full-body harness, not a body belt, and a rescue plan.
2. The crew plans to use a 28 ft extension ladder with its top 2 ft above the eave, unsecured. Identify the violations and describe the correct ladder setup for a 20 ft eave at a 4:1 angle.
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Violations: the ladder must extend at least 3 ft above the landing, and it must be secured to prevent movement. Standing on the top two rungs is prohibited; the ladder must be on a stable, level footing and used with three points of contact. For a 20 ft eave, the required reach is about 23 ft (20 ft plus 3 ft). At a 4:1 angle, ladder length ≈ √(23² + 5.75²) ≈ 23.7 ft, so a 28 ft extension ladder has enough length if properly overlapped and extended, but the top must be 3 ft above the eave and the ladder tied off. The crew should also check the ladder's duty rating and inspect it before use.
3. What training and PPE elements should the employer verify before work begins?
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Fall protection training under 1926.503 must cover recognition of hazards, proper use of PFAS, anchor points, limits on free fall, and rescue. Ladder training under 1926.1060 must cover inspection, setup angle, securing, and load limits. PPE includes a full-body harness, lanyard or self-retracting lifeline, helmet, and non-slip footwear; gloves and eye protection are needed for handling modules. The employer must also have a competent person inspect the roof, anchors, and ladder, and must ensure workers are not exposed to electrical hazards from overhead lines or the PV array.