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Trenching and Excavation (OSHA 1926 Subpart P)

Updated Mar 26, 2026
Requirements for excavation safety including soil classification, protective systems (sloping, benching, shoring, shields), daily inspections, access/egress requirements, and water accumulation hazards. Applies to trenches 5 feet or deeper.
TAGS
OSHAtrenchexcavationshoringsoil
DETAILS
section
1926 Subpart P
category
Excavation
jurisdiction
us
depth trigger
5 feet
regulation body
OSHA
RELATED KNOWLEDGE
⛑️ Safety
OSHA 1926.501 — Fall Protection Duty to Have Fall Protection
Each employee on a walking/working surface with an unprotected side or edge 6 feet or more above a lower level shall be protected from falling by guardrail, safety net, or personal fall arrest system.
⛑️ Safety
OSHA 1926.651 — Excavation General Requirements
Excavations deeper than 5 feet require protective systems (sloping, shoring, or shielding) unless excavation is made entirely in stable rock. All excavations 20 feet or deeper require engineering design.
📋 Code
IBC Section 1107 — Accessible Unit and Dwelling Unit Elements
Requires accessible common use elements within individual residential units.
⛑️ Safety
OSHA 1926.1200-1213 — Confined Space Entry in Construction
Permit-required confined space entry requires atmosphere testing, ventilation, trained attendant, rescue plan, and written permit. Applies to manholes, tanks, vaults, pits, and excavations over 4 feet deep.
⛑️ Safety
OSHA 1926.1053 — Ladders
Requirements for portable and fixed ladders. Extend 3 feet above landing. 4:1 pitch ratio for portable. Load capacity rated. Inspect before each use. #3 cause of fall injuries in construction.
⛑️ Safety
OSHA 1926.451 — Scaffolding General Requirements
Scaffolds must support 4x intended load without failure. Guardrails required at 10 feet. Competent person must supervise erection. Workers must be trained. #2 most-cited OSHA standard in construction.
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