# stairway-type-ladder-rest-platform-interval — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)

For stairway-type-ladder-rest-platform-interval, paragraph citation is 1926.451(e)(3)(ii); type of requirement is maximum vertical interval; value (imperial) is 12 foot; value (metric) is 3.7 m; applies to is Stairway-type ladders, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Requirement ID:** stairway-type-ladder-rest-platform-interval _(our reading, not quoted from the source)_
- **Paragraph citation:** 1926.451(e)(3)(ii) _(our reading, not quoted from the source)_
- **Type of requirement:** maximum vertical interval _(our reading, not quoted from the source)_
- **Value (imperial):** 12 foot _(verified: appears in the quote below)_
- **Value (metric):** 3.7 m _(verified: appears in the quote below)_
- **Applies to:** Stairway-type ladders _(verified: appears in the quote below)_
- **Regulation section heading:** Access _(verified: appears in its own passage below)_

## What the source says

> (3) Stairway-type ladders shall: (i) Be positioned such that their bottom step is not more than 24 inches (61 cm) above the scaffold supporting level; (ii) Be provided with rest platforms at 12 foot (3.7 m) maximum vertical intervals;

## 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/).