___ lumber is constructed of solid lumber glued together, side against side, to make beams and joists of large dimensions that are stronger than natural wood of the same size.

___ lumber is constructed of solid lumber glued together, side against side, to make beams and joists of large dimensions that are stronger than natural wood of the same size.

• A. Glue-laminated
• B. Cross-laminated
• C. Block-laminated
• D. Plywood-lam

Answer: (A)

Glue-laminated lumber is built by bonding solid pieces of wood laid side by side with their grain in the same direction to form beams and joists of larger cross-sections. The resulting material acts as a single, stronger member because the glued laminates share the load and resist bending more effectively than a solid piece of wood of the same size. This process also allows for longer lengths and even curved shapes, offering flexibility in design and structural capacity. Other terms describe different products: cross-laminated timber uses layers placed across each other to create panels, while block-laminated or plywood-lam refer to other, less typical laminating concepts that don’t create the same type of long, strong beam.

Glue-laminated lumber is built by bonding solid pieces of wood laid side by side with their grain in the same direction to form beams and joists of larger cross-sections. The resulting material acts as a single, stronger member because the glued laminates share the load and resist bending more effectively than a solid piece of wood of the same size. This process also allows for longer lengths and even curved shapes, offering flexibility in design and structural capacity. Other terms describe different products: cross-laminated timber uses layers placed across each other to create panels, while block-laminated or plywood-lam refer to other, less typical laminating concepts that don’t create the same type of long, strong beam.