1926.1101(h)(3)(iv)(B): OSHA rule
Key takeaways
- 1926.1101(h)(3)(iv)(B) is part of OSHA's construction standards (29 CFR Part 1926, Subpart Z).
- Related part: 1926.1101(h) Respiratory protection (204 citations).
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In this article
What this rule covers
29 CFR 1926.1101(h)(3)(iv)(B) is one requirement inside 1926.1101 Asbestos, an OSHA construction standard (Part 1926, Subpart Z). The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
(B) A full facepiece supplied-air respirator operated in the pressure-demand mode and equipped with an auxiliary positive-pressure SCBA whenever the employees are in a regulated area performing Class I asbestos work for which a negative exposure assessment is not available and the exposure assessment indicates that the exposure level will be above 1 f/cc as an 8-hour TWA.
Source: eCFR, text current as of 2026-10-15. Read all of 1926.1101.
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OSHA interpretation letters
- Respirators for asbestos Class I work (2024-01-04)
Related parts of this rule
- 1926.1101(h) Respiratory protection 204 citations
- 1926.1101(h)(2) Respirator program 80 citations
- 1926.1101(h)(2)(i) 80 citations
- 1926.1101(h)(1) General 76 citations
- 1926.1101(h)(3) Respirator selection 48 citations
- 1926.1101(h)(3)(iv) 27 citations
- 1926.1101(h)(3)(iv)(A) 16 citations
- 1926.1101(h)(3)(iii) 13 citations
- 1926.1101(h)(3)(iii)(A) 12 citations
- 1926.1101(h)(3)(i) 8 citations
- 1926.1101(h)(3)(i)(A) 8 citations
- 1926.1101(h)(2)(ii)
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About this page
Sources
- 29 CFR 1926.1101 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.