How thick does the railing on a guardrail need to be?

Published on: July 21, 2021

The exact thickness depends on material and jurisdiction you’re in. In general, OSHA mandates at least a 1/4″ thickness for the top rail and midrail of a guardrail system.  The most common guard railing material is 1.90” O.D. tubing or 1 ½” pipe.

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