Determine whether OSHA Subpart R (steel erection) or another 1926 subpart governs a specific activity on a project combining precast/tilt-up concrete and structural steel

Steps

1. Confirm Subpart R does not cover the erection of precast concrete itself — precast/tilt-up concrete erection activities fall under Subpart Q (concrete and masonry construction), not Subpart R, per OSHA's rulemaking history and standard interpretations on 1926.750.
2. On combined projects (e.g., tilt-up walls supporting a steel roof structure), apply Subpart R only to the actual steel erection activities — hoisting, placing, connecting, bolting, and welding of steel joists, metal decking, and similar structural steel work.
3. Apply Subpart Q requirements (including 1926.704 for precast concrete) to the tilt-up panel lifting, bracing, and placement activities on the same site.
4. Where a single crew or activity blends both (e.g., a worker who handles both steel connecting and precast bracing), classify each task by the standard governing that specific activity rather than applying one subpart to the whole job.
5. Confirm scope exclusions under 1926.750 — electrical transmission towers, communication/broadcast towers, and tanks are excluded from Subpart R regardless of similarity to steel erection work.