Ontario Building Code Practice Exam

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Prepare for the Ontario Building Code Exam. Utilize multiple choice questions and detailed explanations. Ace your test with our comprehensive study materials!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the minimum width required for a stairway in a residential building?

750 mm
900 mm
1050 mm
1200 mm

The correct answer is: 900 mm

Stairways in residential buildings are required to have a minimum width of 900 mm. This allows for safe and comfortable passage for people going up and down the stairs. Option A (750 mm) may not provide enough space for two people to pass each other comfortably, while options C (1050 mm) and D (1200 mm) may provide excess space that is not necessary and can potentially take up valuable space in the building. Therefore, option B is the most appropriate and efficient option for a residential stairway width.