A series of user guides have been developed to assist with the interpretation and application of AS 1684 - Residential timber framed construction, Part 2 and Part 3. The guides are aimed at complimenting the information in AS 1684 and are referenced in AS 1684 as a source of further information.
Long Span Beams
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.
Long span beams - span tables
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.