Wood Structural Panels are defined to include which of the following?

Wood Structural Panels are specifically defined in building codes to encompass products that are made primarily from wood and utilized for structural purposes in construction. This category includes plywood and oriented strand board (OSB), which are both engineered wood products known for their strength and versatility in building applications.

Plywood is created by gluing together thin layers of wood veneer, resulting in a strong and stable panel that is used for sheathing, flooring, and other structural purposes. OSB is made from strands of wood that are compressed and bonded together, providing similar structural integrity and making it suitable for a variety of construction uses as well.

The other choices included—concrete, steel, fiberglass, composite materials, and brick and mortar—are all either not wood-based materials or serve different functionalities in construction. They do not fall under the definition of wood structural panels, which focuses specifically on wood-derived products. Therefore, the correct choice identifies the appropriate materials that meet the definition of wood structural panels as outlined in the ICC standards.