What 29 CFR 1926.760 requires (plain English)
29 CFR 1926.760 sets the fall-protection requirements for steel erection under Subpart R. Its general trigger is higher than the rest of construction: each worker engaged in a steel erection activity on a walking/working surface with an unprotected side or edge more than 15 feet above a lower level must be protected by guardrails, safety nets, or a personal fall arrest, positioning-device, or fall-restraint system.
The standard recognizes the unique conditions of ironwork with tailored provisions. Connectors, the workers who guide and bolt incoming steel, and workers in a controlled decking zone (CDZ) have specific rules between 15 and 30 feet, reflecting the practical difficulty of tying off while making a connection or laying decking, while still requiring fall protection and training. Perimeter safety cables are required on the perimeter of multi-story structures, and a fall-protection plan is allowed only in the limited circumstances where conventional protection is infeasible.
1926.760 sits within Subpart R (steel erection) alongside its training requirement (1926.761) and structural-stability provisions. It is distinct from the general construction fall-protection duty (1926.501, which triggers at 6 feet): steel erection is one of the specific activities OSHA regulates under its own subpart with its own trigger height.