Ontario Building Code Practice Exam

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What is the minimum height required for a guardrail on a balcony in a residential building?

  1. 900 mm

  2. 1000 mm

  3. 1100 mm

  4. 1200 mm

The correct answer is: 1100 mm

The minimum height required for a guardrail on a balcony in a residential building is 1100 mm. This is to ensure the safety and prevent falls for individuals, especially children. Option A (900 mm) may be too low and easier for someone to climb over while option B (1000 mm) may still not be enough to prevent falls. Option D (1200 mm) would be too high and may not be aesthetically pleasing. Therefore, the most suitable and safe height for a guardrail on a balcony in a residential building is 1100 mm.

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