Humber/Ontario Real Estate Course 2 Exam Practice

Which condition is typical for roof trusses during winter months?

1. They are generally flat and without elevation changes.

2. Truss uplift can occur during colder weather.

3. They are customarily crafted from steel.

4. Identical size and configuration are maintained for uniformity.

5. They are solely structural supports for attic spaces.

6. They are preferred over traditional rafters.

The correct answer is: Truss uplift can occur during colder weather.

During the winter months, temperature changes can affect roof trusses, leading to a phenomenon called truss uplift. Truss uplift occurs when the bottom chord of a roof truss expands due to temperature changes, causing the truss to become slightly displaced from the top plates of the walls it rests on. This displacement can lead to visible gaps at the ceiling-walls junction, especially in colder weather when temperature differentials between the interior and exterior of a building are more extreme. This condition is typical for roof trusses during the winter months, making option B the correct answer. The other options are not correct for various reasons: A. Roof trusses are not generally flat and without elevation changes; they are engineered components with specific angles and configurations to support the roof structure. C. While roof trusses can be crafted from different materials such as wood or steel, there is no specific requirement for them to be customarily crafted from steel. D. Roof trusses are typically designed and engineered to different sizes and configurations based on the specific requirements of the roof design, so maintaining identical size and configuration for uniformity is not a standard practice. E. Roof trusses serve as both structural supports and help define the shape of the roof; they are not solely for supporting attic spaces. F. While roof trusses are commonly used in modern construction due to their cost-effectiveness and efficiency, it is not accurate to say that they are universally preferred over traditional rafters in all scenarios.