Red Seal Ironworker (Generalist) Practice Exam

Which of the following materials is NOT commonly used in structural ironwork?

1. Concrete

2. Wrought iron

3. Carbon steel

4. Aluminum

The correct answer is: Concrete

Concrete is primarily used for structural support and foundations in construction, rather than as a material for structural ironwork, which focuses on materials that can bear loads and are primarily used to create frameworks—such as beams, columns, and girders. Wrought iron, carbon steel, and aluminum are all common materials within structural ironwork due to their strength and durability. Wrought iron is known for its malleability and resistance to corrosion, making it suitable for decorative and structural applications. Carbon steel is favored for its high tensile strength and versatility, often employed in various structural contexts. Aluminum, although lighter than steel, is valued in structural applications for its resistance to corrosion and strength-to-weight ratio. Thus, in the context of structural ironwork, concrete is not typically categorized alongside these metallic materials.