Ontario Building Code Practice Exam

Question: 1 / 400

What is the minimum height required for a guardrail on a roof in a commercial building?

900 mm

The minimum height required for a guardrail on a roof in a commercial building is 900 mm. This is because it is the industry standard for safety and recommended by most building codes and regulations. Option B, C, and D are all incorrect as they suggest a greater height requirement, which may make it difficult for workers to access the roof or for equipment to be moved onto it.

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1000 mm

1100 mm

1200 mm

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