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Mechanical ventilation is required in a space with less than how many cubic feet per welder?

10,000 cubic feet per welder.

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  1. 1,000 cubic feet
  2. 10,000 cubic feet ✔
  3. 100,000 cubic feet

Why: Small rooms fill with fumes quickly. OSHA requires mechanical ventilation in a space of less than 10,000 cubic feet (284 m3) per welder.

Huh, didn't know that: Natural ventilation is considered enough when none of OSHA's small-room, low-ceiling or confined-space conditions apply.

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A cramped welder is just trying to make a little breathing room.
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References

Answer: 10,000 cubic feet. Small rooms fill with fumes quickly. OSHA requires mechanical ventilation in a space of less than 10,000 cubic feet (284 m3) per welder.

  1. OSHA 29 CFR 1910.252 General requirements, welding, cutting and brazing www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.252
    In a space of less than 10,000 cubic feet (284 m 3 ) per welder.
    Checked 2026-10-10.

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