Specifying externally exposed structural timber
This Wood Information Sheet (WIS) looks at some of the factors to consider when specifying a desired service life for structural timbers that are to be exposed outdoors but not in contact with the ground.
This WIS addresses general principles of structural design only, giving an overview of the subject with signposts to more detailed sources that are listed at the end.
• Types of structures used externally
• Designing for exposed structural timber
• Specifying for desired service life
• Use classes and service classes
• Preservative treatment specification
• Large cross-sectional solid timber
• Engineered timber
• Staining and discolouration
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.
- Timber -...
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...
The National Structural Timber Specification for Building Construction (NSTS) is an ambitious initiative by TRADA to support the rapidly increasing use of timber. It aims to be the definitive, comprehensive, stand-alone national specification for structural timber, complementing the existing national specifications that are widely used for steel and concrete buildings....