Ontario Building Code Practice Exam

What is the minimum height required for a handrail on a stairway in a commercial building?

1. 750 mm

2. 850 mm

3. 950 mm

4. 1050 mm

The correct answer is: 950 mm

While A, B, and D may seem like feasible options, they are actually incorrect because they all fall below the minimum height requirement for a handrail on a stairway in a commercial building. According to building codes, the minimum height for handrails on stairways in commercial buildings is 950 mm (3 feet 1 inch) from the surface of the tread. This height is determined based on safety standards and is intended to provide proper support and balance for individuals using the stairs. Therefore, option C, with a height of 950 mm, is the correct answer. It is important to note that building codes and regulations may vary by location, so it is always best to check with local authorities for specific guidelines.