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Silica Dust Exposure (OSHA 1926.1153)

Updated Mar 26, 2026

Crystalline silica exposure standard for construction including permissible exposure limit (50 μg/m³ TWA), Table 1 control methods, exposure assessment, medical surveillance, and housekeeping for cutting/grinding concrete, brick, and stone.

TAGS

OSHA silica dust respiratory exposure

DETAILS

PEL

50 μg/m³ TWA

section

1926.1153

category

Silica

jurisdiction

us

regulation body

OSHA

RELATED KNOWLEDGE

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.

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.

IBC Section 1107 — Accessible Unit and Dwelling Unit Elements

Requires accessible common use elements within individual residential units.

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.

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.

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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