Humber/Ontario Real Estate Course 4 Exam Practice

What is the primary function of a lintel in construction?

1. Acts as a decorative element above doors.

2. Essentially performs the same structural function as an archway.

3. Is used with exterior siding to ensure a minimum clearance between the bottom of the siding and the finished grade level.

4. Must always be constructed of steel for needed support.

5. Provides a ventilation gap for attic spaces.

6. Prevents water seepage into basements.

The correct answer is: Essentially performs the same structural function as an archway.

The primary function of a lintel in construction is to support the weight of the structure above openings such as doors and windows. This structural component is crucial as it distributes the load from above, effectively allowing for openings without compromising the stability and integrity of the walls. By performing a function similar to that of an archway—distributing weight across its span—a lintel ensures that the walls can remain intact without cracking or collapsing. While the other considerations related to decorative elements, material requirements, siding clearance, ventilation, and water prevention may be important in their own contexts, they do not capture the essence of what a lintel specifically does within the framework of structural engineering. Lintels are predominantly focused on load-bearing functions, similar to arches, rather than decorative or specific utility roles which might be implied in the other options.