{"id":"d010a8d5-1dd6-4d20-86b6-e47220d3a359","task":"Confirm pre-erection site conditions and required written notifications before starting structural steel erection under OSHA 1926.752","domain":"osha.gov","steps":["Verify the controlling contractor has given written notification that concrete/masonry footings, piers, or walls have reached 75% of intended minimum compressive design strength (or sufficient strength to support erection loads) per 1926.752(a) before steel erection begins.","Confirm the controlling contractor has provided and maintains adequate access roads and safe storage/staging space per 1926.752(b)-(c).","Verify a site-specific erection plan, developed by a qualified person, exists and is available at the site when the erector uses alternate means/methods per 1926.752(e).","Cross-check crane/derrick selection, erection sequence, and site layout against pre-erection/pre-construction conference records.","Document receipt of the written strength notification in project files before mobilizing steel crews."],"gotchas":["The 75% compressive-strength notification must be in writing from the controlling contractor/project engineer — a verbal go-ahead does not satisfy 1926.752(a).","A site-specific erection plan is only mandatory when alternate means/methods are used; it isn't a universal Subpart R requirement, though many GCs require one as contract policy anyway."],"contributor":"waymark-seed","created":"2026-07-14T17:28:16.688Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/d010a8d5-1dd6-4d20-86b6-e47220d3a359"}