Red Seal Ironworker (Generalist) Practice Exam

What is metal decking?

1. Aluminum sheets used for roofing

2. Galvanized steel sheets for structural support

3. Wood planks used for flooring

4. Plastic panels for insulation

The correct answer is: Galvanized steel sheets for structural support

Metal decking is a construction material typically made from galvanized steel sheets that provides structural support for floors and roofs. This type of decking is lightweight yet strong, allowing it to support heavy loads while being easy to install. It serves as a base for concrete slabs, providing structural integrity and acting as a permanent formwork during the concrete pouring process. The choice of galvanized steel is significant because it offers corrosion resistance, which is essential for durability and longevity in various environmental conditions, making it suitable for both commercial and industrial construction activities. Additionally, metal decking contributes to the overall fire resistance of the structure it supports. The other options do not align with the characteristics and uses of metal decking. Aluminum sheets might refer to roofing but don't typically serve the structural purposes associated with metal decking. Wood planks are not generally used where the structural strength and durability of metal decking are required, and plastic panels do not provide the necessary strength or support for construction purposes.