GD3 Timber materials - Properties and associated design procedures with Eurocodes

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For engineers who want to understand design to Eurocodes, this document explains the principles behind the limit states approach and the basis for the characteristic values used in design. The derivation of the strength and design properties of materials are explained, together with partial factors and the modification factors which are used specifically in timber design. Solid timber, glulam, LVL, structural wood-based panels, structural adhesives, metal fasteners and connectors are all considered.


  • Principles of limit state design with Eurocodes
  • Design values for material properties - general principles
  • Load cases and time dependency
  • Basis for characteristic values
  • Design properties for glulam and LVL
  • Geometrical data
  • Stiffness parameters in analysis
  • Partial factor for materials properties in design
  • Load duration classifications and modifications
  • Effect of member size on strength
  • Structural wood-based panels
  • Structural adhesives
  • Metal fasteners and connectors

Suggested Reading

List of Wood Information Sheetsnavigation-arrow

This document contains a fully comprehensive list of all the most up to date Wood Information Sheets (WIS) published by TRADA. Available to members for free or non-members for £12.00, these Wood Information Sheets provide technical guidance related to almost every timber topic under the sun.



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17/07/2017 |  Wood Information Sheet  

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Explains the principles of serviceability limit states set out in Eurocode 0 and shows how to apply them to structural timber members, assemblies and built-up components. Explains timber-specific rules given in Eurocode 5 relating to creep and joint slip. Recommends some deflection limits and provides simple worked examples.



01/01/2006 |  Other Technical Guidance  

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With engineered timber becoming an increasingly prevalent component in construction, it is important for members of the construction industry to understand not only the benefits and properties of Engineered wood products, but also the different types.

With modified wood products being improved upon on a seemingly daily basis, this...

01/01/2012 |  Choose and Use