What is the timber member created by nailing two or more pieces of lumber together called?

• A. Mandrel
• B. Nail Laminated
• C. Movable Bridge
• D. PVC - Point of Vertical Curvature

Answer: (B)

Nail-laminated timber is formed by nailing two or more boards together to behave as a single structural member. By stacking and securing boards with nails, you create a thicker, stronger beam or deck that carries loads as an integrated unit. This approach relies on mechanical fasteners to transfer shear and bending between boards, offering a practical way to make larger sections from shorter pieces of lumber. It differs from glue-laminated timber, which uses adhesive to bond the boards.

Other terms don’t describe this concept: a mandrel is a tool for forming holes or cores, a movable bridge is a type of structure, and PVC - point of vertical curvature is a roadway geometry term.