What 29 CFR 1926.750 requires (plain English)
29 CFR 1926.750 opens Subpart R, Steel Erection, by setting its scope. It provides that the subpart sets forth requirements to protect employees from the hazards associated with steel erection activities involved in the construction, alteration, and/or repair of single and multi-story buildings, bridges, and other structures where steel erection occurs. The requirements apply to employers engaged in steel erection unless otherwise specified.
The scope also draws an explicit boundary: the subpart does NOT cover electrical transmission towers, communication and broadcast towers, or tanks. Those structures, though they involve steel, are excluded from Subpart R and are addressed by other requirements. Getting this boundary right determines whether Subpart R's specialized rules apply.
The substantive requirements follow across 1926.751 (definitions) through 1926.761 (training): site layout and the concrete-strength notification before erection begins (1926.752), hoisting and rigging (1926.753), structural steel assembly (1926.754), column anchorage (1926.755), beams and columns and the two-bolt/four-anchor-rod connection minimums (1926.756), open web steel joists, systems-engineered metal buildings, falling-object protection, and fall protection, where steel erection generally triggers fall protection at 15 feet, with specific rules for connectors and controlled decking zones. 1926.750's scope establishes which work all of these apply to.