# stairway-minimum-angle-from-horizontal — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)

For stairway-minimum-angle-from-horizontal, paragraph citation is 1926.451(e)(4)(xi); type of requirement is minimum angle; value (imperial) is 40 degrees; applies to is Stairways; regulation section heading is Access, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Requirement ID:** stairway-minimum-angle-from-horizontal _(our reading, not quoted from the source)_
- **Paragraph citation:** 1926.451(e)(4)(xi) _(our reading, not quoted from the source)_
- **Type of requirement:** minimum angle _(our reading, not quoted from the source)_
- **Value (imperial):** 40 degrees _(verified: appears in the quote below)_
- **Applies to:** Stairways _(verified: appears in the quote below)_
- **Regulation section heading:** Access _(verified: appears in its own passage below)_

## What the source says

> (xi) Stairways shall be installed between 40 degrees and 60 degrees from the horizontal.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Regulation section heading

> (e) Access.

## Source

- https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1926/subpart-L/section-1926.451

Last verified: 2026-09-14. Review by: 2027-08-31.
Part of [Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)](https://referencesource.org/osha-scaffold-dimensional-tolerances/).