# support-device-surface-factor-stall-capacity — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)

For support-device-surface-factor-stall-capacity, paragraph citation is 1926.451(d)(1); type of requirement is load safety factor; value (imperial) is 1.5 times the load imposed on them by the scaffold at the stall capacity of the hoist; applies to is All suspension scaffold support devices, such as outrigger beams, cornice hooks, parapet clamps, and similar devices; regulation section heading is Criteria for suspension scaffolds, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Requirement ID:** support-device-surface-factor-stall-capacity _(our reading, not quoted from the source)_
- **Paragraph citation:** 1926.451(d)(1) _(our reading, not quoted from the source)_
- **Type of requirement:** load safety factor _(our reading, not quoted from the source)_
- **Value (imperial):** 1.5 times the load imposed on them by the scaffold at the stall capacity of the hoist _(verified: appears in the quote below)_
- **Applies to:** All suspension scaffold support devices, such as outrigger beams, cornice hooks, parapet clamps, and similar devices _(verified: appears in the quote below)_
- **Regulation section heading:** Criteria for suspension scaffolds _(verified: appears in its own passage below)_

## What the source says

> (1) All suspension scaffold support devices, such as outrigger beams, cornice hooks, parapet clamps, and similar devices, shall rest on surfaces capable of supporting at least 4 times the load imposed on them by the scaffold operating at the rated load of the hoist (or at least 1.5 times the load imposed on them by the scaffold at the stall capacity of the hoist, whichever is greater).

## 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

> (d) Criteria for suspension scaffolds.

## 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/).