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 slope required for a flat roof in a commercial building?

1/8 inch per foot
1/4 inch per foot
1/2 inch per foot
1 inch per foot

The correct answer is: 1/4 inch per foot

The minimum slope required for a flat roof in a commercial building is 1/4 inch per foot. This is because a flat roof still needs some slope for proper drainage and to prevent water from pooling and causing damage. A slope of 1/4 inch per foot is the industry standard for flat roofs and provides enough slope to ensure proper water flow without making the roof too steep. The other options are incorrect because they either provide too little slope (A and C) or too much slope (D), which can result in drainage issues and potential damage to the roof. Therefore, option B is the most appropriate and accurate answer for the minimum slope required for a flat roof in a commercial building.