Final answer:
Wood I-beams commonly use Laminated Veneer Lumber (LVL) for flanges due to its strength and straightness, compared to other engineered wood options.
Step-by-step explanation:
The flanges of wood I-beams are typically made of Laminated Veneer Lumber (LVL). This material is chosen for its strength and reliability in structural applications. LVL is an engineered wood product that is made by bonding together multiple layers of thin wood veneers with adhesives. This process creates a material that is stronger and straighter than traditional sawn lumber. The other options, such as Plywood, Particleboard, and Oriented Strand Board (OSB), are also engineered wood products but are generally used for different applications within construction.