# stairrail-maximum-height — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)

For stairrail-maximum-height, paragraph citation is 1926.451(e)(4)(vii); type of requirement is maximum height; value (imperial) is 37 inches; value (metric) is 94 cm; applies to is Stairrails, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Requirement ID:** stairrail-maximum-height _(our reading, not quoted from the source)_
- **Paragraph citation:** 1926.451(e)(4)(vii) _(our reading, not quoted from the source)_
- **Type of requirement:** maximum height _(our reading, not quoted from the source)_
- **Value (imperial):** 37 inches _(verified: appears in the quote below)_
- **Value (metric):** 94 cm _(verified: appears in the quote below)_
- **Applies to:** Stairrails _(verified: appears in the quote below)_
- **Regulation section heading:** Access _(verified: appears in its own passage below)_

## What the source says

> (vii) Stairrails shall be not less than 28 inches (71 cm) nor more than 37 inches (94 cm) from the upper surface of the stairrail to the surface of the tread, in line with the face of the riser at the forward edge of the tread.

## 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/).