Author: Structural Timber Association
1 October 2015
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Structural Timber Association
This Timber Engineering Notebook provides guidance for engineers involved in the design of timber frame building structures on the structural stability issues commonly referred to as 'design for structural robustness' or 'design to avoid disproportionate collapse' in buildings.
Combinations of timber or laminated sections with different materials such as wood-based boards or metal elements are used to create ‘engineered wood products’ (EWPs) whose maximum size is limited only by manufacturing, handling and transportation constraints. Different types of EWP are described here, in addition to timber structural systems and their structural applications.
The Timber Engineering Notebook series concludes by examining the use of glued-in rods for timber connections. The increased use of manufactured timber, such as glued laminated timber (glulam) and laminated veneer lumber (LVL), with improved mechanical properties and the ability to produce cross-sections of almost unlimited size,has driven the timber engineering industry to come up with improved connection systems. Glued-in rods and plates have been used in the UK as a method of connecting timber since the 1970s. They offer the possibility of creating concealed connections that are capable of transferring large forces and moments with minimal slip due to their high stiffness.