Ontario Building Code Practice Exam

In residential buildings, the Ontario Building Code specifies that the minimum height for guardrails on balconies is 1.1 meters. This height is established to ensure safety for individuals using the balcony, providing adequate protection against falls. The height requirement is based on considerations for the potential risks associated with elevated structures, especially in places where children may have access.

Having a guardrail at this height minimizes the chance of individuals accidentally toppling over the edge and offers a level of security that aligns with safety standards recognized in building regulations. This height is intended to be a safe compromise that addresses various scenarios, including leaning over the railing, which may occur in both residential contexts and more public spaces.

The other options present heights that fall below the code's specified minimum, which could lead to increased risk of accidental falls and do not meet established safety standards.