The purpose of a colonnade is to:

The purpose of a colonnade is to:

• A. To decorate the interior with columns.
• B. To mark a ceremonial entrance.
• C. To support a roof, entablature, or arcade.
• D. To define the transition between spaces.

Answer: (C)

A colonnade’s main function is to bear loads. It is a row of columns that carries the weight of a roof, an entablature, or an arcade, transferring that load down to the foundations. This structural role creates a covered walkway and establishes a rhythm and order in the façade or space. While a colonnade can also frame entrances, decorate a façade, or help define transitions between areas, those effects come from its form, not its primary purpose. Therefore, supporting the roof and horizontal elements is what a colonnade is best for.