Which type of lumber can be used for structural purposes and is often manufactured by laminating layers with adhesive?

Which type of lumber can be used for structural purposes and is often manufactured by laminating layers with adhesive?

• A. Plywood
• B. Glue-laminated
• C. Softwood
• D. Particleboard

Answer: (B)

Laminate layers with adhesive to form a single structural member. Glue-laminated timber, or glulam, is engineered wood created by bonding thin layers of wood with a strong adhesive and pressing them together to make beams or arches. This construction gives a very high bending strength and stiffness, allowing long spans and heavy loads while still being workable in curved shapes for architectural design. The lamination aligns multiple layers to share load paths, making the member much stronger in bending than a solid piece of the same cross-section and reducing issues like warping. Plywood is built as panels from veneers, not typically used as a straight structural lumber beam, though it is strong for panels. Softwood refers to a wood type rather than a structural-manufacturing method. Particleboard is made from wood particles bound with resin and is used mainly for non-structural furniture or cabinetry. So the described type is glue-laminated timber.

Laminate layers with adhesive to form a single structural member. Glue-laminated timber, or glulam, is engineered wood created by bonding thin layers of wood with a strong adhesive and pressing them together to make beams or arches. This construction gives a very high bending strength and stiffness, allowing long spans and heavy loads while still being workable in curved shapes for architectural design. The lamination aligns multiple layers to share load paths, making the member much stronger in bending than a solid piece of the same cross-section and reducing issues like warping. Plywood is built as panels from veneers, not typically used as a straight structural lumber beam, though it is strong for panels. Softwood refers to a wood type rather than a structural-manufacturing method. Particleboard is made from wood particles bound with resin and is used mainly for non-structural furniture or cabinetry. So the described type is glue-laminated timber.