# ramp-walkway-guardrail-trigger-height — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451) For ramp-walkway-guardrail-trigger-height, paragraph citation is 1926.451(e)(5)(i); type of requirement is trigger height; value (imperial) is 6 feet; value (metric) is 1.8 m; applies to is Ramps and walkways, recorded from its source on 2026-08-31; source re-checked 2026-09-14. - **Requirement ID:** ramp-walkway-guardrail-trigger-height _(our reading, not quoted from the source)_ - **Paragraph citation:** 1926.451(e)(5)(i) _(our reading, not quoted from the source)_ - **Type of requirement:** trigger height _(our reading, not quoted from the source)_ - **Value (imperial):** 6 feet _(verified: appears in the quote below)_ - **Value (metric):** 1.8 m _(verified: appears in the quote below)_ - **Applies to:** Ramps and walkways _(verified: appears in the quote below)_ - **Regulation section heading:** Access _(verified: appears in its own passage below)_ ## What the source says > (i) Ramps and walkways 6 feet (1.8 m) or more above lower levels shall have guardrail systems which comply with subpart M of this part ## 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/).