Sets out where the employer must protect employees from falls, with every system provided meeting the 1926.502 criteria. Before anyone works on a walking/working surface the employer must establish that it has the strength and structural integrity to hold them, and may let them work there only when it does. The general trigger is 6 feet (1.8 m) above a lower level. Employees on a surface whose side or edge is unprotected at that height need guardrails, safety nets or personal fall arrest systems (PFAS). Workers building a leading edge need the same three options; others on a surface where leading edges are under construction are protected likewise, and where a CAZ already exists a control line may replace the guardrail along the edge parallel to the leading edge. In hoist areas guardrails or PFAS are used, and anyone leaning through or out over an opening whose guardrail, chain or gate has been removed for hoisting must wear PFAS. Holes: falls through holes and skylights more than 6 feet above a lower level are prevented by PFAS, covers or guardrails around the hole, and covers also guard against tripping or stepping into holes and against objects dropping through them. Formwork and reinforcing steel faces use PFAS, nets or positioning devices; ramps, runways and walkways use guardrails. Excavation edges 6 feet or deeper get guardrails, fences or barricades when hidden by plants or other visual barriers, and wells, pits and shafts of that depth also allow covers. Near dangerous equipment, workers less than 6 feet above it need guardrails or equipment guards, and at 6 feet or more guardrails, PFAS or nets. Overhand bricklaying at 6 feet or more uses guardrails, nets, PFAS or a controlled access zone, but reaching more than 10 inches below the working surface requires guardrails, nets or PFAS. Roofing on low-slope roofs allows guardrails, nets, PFAS, or a warning line combined with any of those or with a safety monitor, and on roofs 50 feet or less wide a safety monitor alone (Appendix A shows how width is measured). Steep roofs need guardrails with toeboards, nets or PFAS. Wall openings whose outside bottom edge is 6 feet or more up and whose inside bottom edge is under 39 inches above the surface need guardrails, nets or PFAS, and any other surface at 6 feet or more is covered by the same three systems. For leading edge work, precast concrete erection (panels, columns, beams, tees and grouting) and residential construction, an employer that can show conventional systems are infeasible or create a greater hazard may instead develop and implement a 1926.502(k) fall protection plan; the notes presume feasibility and place the burden of proof on the employer. Falling objects: exposed employees must wear hard hats, and the employer must also use one of three measures: toeboards, screens or guardrails; a canopy with loose objects kept back from the edge; or a barricaded area that employees are kept out of, again with objects held back from the edge.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.