Ontario Building Code Practice Exam

What is the maximum allowable height for a retaining wall without the need for a building permit?

1. 0.6 meters

2. 1.0 meter

3. 1.5 meters

4. 2.0 meters

The correct answer is: 0.6 meters

Retaining walls are structures used to hold back soil or other materials. The maximum allowable height without a building permit varies depending on location, but usually ranges from 0.6 to 1.0 meter. Option B, C, and D are all incorrect as they exceed the maximum allowable height and would require a building permit. Additionally, it is important to note that local building codes and regulations should always be consulted before constructing a retaining wall.