The Materials Book

Strength through Diversity: Using varying kinds of wood in I-beams can boost durability Laminated wooden beams combine the benefits of wood with those of prefabricated building components. They are available in several sizes and strengths, but they all follow the same principle: the combination of two kinds of wood creates a lightweight, high-performance, low- cost, material-saving component. The central element—the bridge connecting the outer pieces—consists of leftovers from the milling industry. It can be weaker because it typically receives less stress. The two outer flanges are made from sturdier laminated wood to help them bear the beam’s load. Example: Laminated wood IPE beam Contributed by: Atelier Fanelsa, Germany 335