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query 9answered

What is the required guardrail toprail height?

timestamp
9 Sept 2026, 20:49

model
gpt-4o-mini

latency
7017 ms

tokens
4901 in · 140 out

chunks
6

Answer as delivered

1.1

The required guardrail toprail height is between 36 inches (0.9 m) and 45 inches (1.2 m) for suspended scaffolds where both a guardrail and a personal fall arrest system are required. Additionally, for supported scaffolds manufactured or placed in service after January 1, 2000, the top edge height must be between 38 inches (0.97 m) and 45 inches (1.2 m) above the platform surface. Under certain conditions, the height may exceed 45 inches if the guardrail system meets all other criteria of the respective paragraph [Excerpt 1, p.43] and [Excerpt 4, p.42].

Cited sources

6 of 6 resolved

01as1 · superseded · chunk 424[as, Sec E, p.43]
02OSHA 3150 Scaffold Guide2002 · superseded · chunk 351[OSHA 3150 Scaffold Guide, Sec E, p.43]
03OSHA 3150 Scaffold Guide2002 · superseded · chunk 350[OSHA 3150 Scaffold Guide, Sec E, p.42]
04as1 · superseded · chunk 423[as, Sec E, p.42]
05as1 · superseded · chunk 418[as, Sec E, p.39]
06OSHA 3150 Scaffold Guide2002 · superseded · chunk 352[OSHA 3150 Scaffold Guide, Sec E, p.43]

chunk ids are stored per query, so these are the exact excerpts the model saw · the revision status shown is current, not as-of-query — roadmap: store the corpus revision alongside the chunk ids