# platform-gap-to-uprights-demonstrated-exception — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)

For platform-gap-to-uprights-demonstrated-exception, paragraph citation is 1926.451(b)(1)(ii); type of requirement is maximum gap; value (imperial) is 91⁄2 inches; value (metric) is 24.1 cm; applies to is the remaining open space between the platform and the uprights, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Requirement ID:** platform-gap-to-uprights-demonstrated-exception _(our reading, not quoted from the source)_
- **Paragraph citation:** 1926.451(b)(1)(ii) _(our reading, not quoted from the source)_
- **Type of requirement:** maximum gap _(our reading, not quoted from the source)_
- **Value (imperial):** 91⁄2 inches _(verified: appears in the quote below)_
- **Value (metric):** 24.1 cm _(verified: appears in the quote below)_
- **Applies to:** the remaining open space between the platform and the uprights _(verified: appears in the quote below)_
- **Regulation section heading:** Scaffold platform construction _(verified: appears in its own passage below)_

## What the source says

> (ii) Where the employer makes the demonstration provided for in paragraph (b)(1)(i) of this section, the platform shall be planked or decked as fully as possible and the remaining open space between the platform and the uprights shall not exceed 91⁄2 inches (24.1 cm).

## 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

> (b) Scaffold platform construction.

## 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/).