Most housing projects involve timber framed construction but in some long span situations steel is used to help support the timber. In many instances, a strategically placed engineered timber beam can do the job just as well. As a result, a 100% timber solution offers less cost, less complexity, better flow and simpler safety management.

This is a PDF of the online resource available above.

Plywood box beams are lightweight, simple to fabricate, conventionally stable and, with good design, structurally efficient and economical. The options provided in the following span tables are designed according to limit state design theory and for winds speeds up to N3. The span tables open up new options for beams incorporated into walls, portal frames and other typical long span applications.