# platform-overlap-minimum — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)

For platform-overlap-minimum, paragraph citation is 1926.451(b)(7); type of requirement is minimum overlap; value (imperial) is 12 inches; value (metric) is 30 cm; applies to is scaffolds where platforms are overlapped to create a long platform, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Requirement ID:** platform-overlap-minimum _(our reading, not quoted from the source)_
- **Paragraph citation:** 1926.451(b)(7) _(our reading, not quoted from the source)_
- **Type of requirement:** minimum overlap _(our reading, not quoted from the source)_
- **Value (imperial):** 12 inches _(verified: appears in the quote below)_
- **Value (metric):** 30 cm _(verified: appears in the quote below)_
- **Applies to:** scaffolds where platforms are overlapped to create a long platform _(verified: appears in the quote below)_
- **Regulation section heading:** Scaffold platform construction _(verified: appears in its own passage below)_

## What the source says

> (7) On scaffolds where platforms are overlapped to create a long platform, the overlap shall occur only over supports, and shall not be less than 12 inches (30 cm) unless the platforms are nailed together or otherwise restrained to prevent movement.

## 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/).