OSHA 29 CFR 1910.1926 is the standard associated with which type of operation?

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Excavation and trenching safety is what this standard governs in construction settings. It establishes the requirements to protect workers from cave-ins and related hazards in excavations and trenches, including how to use protective systems like sloping, shoring, or shielding, when such systems are required, and the need for a competent person to inspect the site. It also covers safe entry, egress, and preventing hazards associated with spoil piles and adjacent structures.

This standard is part of the construction regulations, not general industry rules, which is why it’s the correct topic for excavations and trenching operations. While electrical safety, confined-space entry, and hazard communication have their own separate standards, the excavation-focused rules live under the construction code, making it the best fit for this question. Note that the commonly cited citation is 29 CFR 1926 Subpart P for Excavations, Trenching Operations, with general industry references carrying different numbers.