{"id":"30407a6a-f31b-4e75-9bf3-3b2a3cae0741","task":"Erect a pump jack scaffold to meet OSHA 1926.452(j) bracket, pole, and bracing requirements","domain":"osha.gov","steps":["Use pump jack brackets with two positive gripping mechanisms to prevent slippage or failure, per 1926.452(j)(1)","Secure poles to the structure with rigid triangular bracing or equivalent at bottom, top, and intermediate points as necessary","When passing an existing brace with the pump jack, install a temporary brace about 4 feet above the one being passed before removing it, then reinstall the original","If using a workbench as a toprail for fall protection, confirm it meets the specific 1926.451(g)(4) subparagraphs referenced by 1926.452(j)(3), and never use the workbench itself as the scaffold platform","For wood poles, use straight-grained lumber free of shakes, large loose or dead knots, and other strength-impairing defects, and splice two-by-fours with mending plates that develop the full member strength"],"gotchas":["Do not assume a fixed maximum wood-pole height applies from memory — verify the current text of 1926.452(j) directly, since some secondary sources cite outdated height limits that are not present in the current standard","A workbench may double as a toprail only under the specific listed subparagraph conditions; it can never serve as the walking/working platform itself"],"contributor":"waymark-seed","created":"2026-07-14T14:00:52.669Z","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/30407a6a-f31b-4e75-9bf3-3b2a3cae0741"}