1910.94(c)(6)(i): OSHA rule
Key takeaways
- 1910.94(c)(6)(i) is part of OSHA's general industry standards (29 CFR Part 1910, Subpart G).
- Related part: 1910.94(c) Spray finishing operations (30 citations).
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In this article
What this rule covers
29 CFR 1910.94(c)(6)(i) is one requirement inside 1910.94 Ventilation, an OSHA general industry standard (Part 1910, Subpart G). 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
(i) Except where a spray booth has an adequate air replacement system, the velocity of air into all openings of a spray booth shall be not less than that specified in Table G-10 for the operating conditions specified. An adequate air replacement system is one which introduces replacement air upstream or above the object being sprayed and is so designed that the velocity of air in the booth cross section is not less than that specified in Table G-10 when measured upstream or above the object being sprayed.
| Operating conditions for objects completely inside booth | Crossdraft, f.p.m. | Airflow velocities, f.p.m. | |
|---|---|---|---|
| Design | Range | ||
| Electrostatic and automatic airless operation contained in booth without operator | Negligible | 50 large booth | 50-75 |
| 100 small booth | 75-125 | ||
| Air-operated guns, manual or automatic | Up to 50 | 100 large booth | 75-125 |
| 150 small booth | 125-175 | ||
| Air-operated guns, manual or automatic | Up to 100 | 150 large booth | 125-175 |
| 200 small booth | 150-250 | ||
| Notes: | |||
| (1) Attention is invited to the fact that the effectiveness of the spray booth is dependent upon the relationship of the depth of the booth to its height and width. | |||
| (2) Crossdrafts can be eliminated through proper design and such design should be sought. Crossdrafts in excess of 100fpm (feet per minute) should not be permitted. | |||
| (3) Excessive air pressures result in loss of both efficiency and material waste in addition to creating a backlash that may carry overspray and fumes into adjacent work areas. | |||
| (4) Booths should be designed with velocities shown in the column headed “Design.” However, booths operating with velocities shown in the column headed “Range” are in compliance with this standard. | |||
Source: eCFR, text current as of 2026-10-15. Read all of 1910.94.
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OSHA interpretation letters
None exist. OSHA has not published a letter of interpretation for 1910.94(c)(6)(i).
Related parts of this rule
- 1910.94(c) Spray finishing operations 30 citations
- 1910.94(c)(2) Location and application 11 citations
- 1910.94(c)(8) Scope
- 1910.94(c)(6) Velocity and air flow requirements
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About this page
Sources
- 29 CFR 1910.94 (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.