- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 05 Dec 2017
BRE (Building Research Establishment) is an independent, research-based consultancy, testing and training organisation, operating in the built environment and associated industries. A guide to the use of urban timber (FB 50) was written by Geoff Cooper and published by BRE on 31 July 2012.
The guide defines 'crotch figure', or 'curl figure' as follows:
|Depending on the species and growth habit of the tree, most trees will branch from the main trunk into two or more large limbs from which the crown is formed. If the crown develops through the formation of two main limbs, the junction at which this occurs can generate material with highly decorated figure known as crotch or curl figure.|
|The term figure is usually defined as a pattern, distinctive features or markings which relieve the surface uniformity of a piece of wood. The term is most often used to describe a feature which enhances the attractiveness of a piece of wood. Figure can be produced by a variety of different mechanisms.|
 Find out more.
 Related articles on Designing Buildings Wiki
- 11 things you didn't know about wood.
- A guide to the use of urban timber (FB 50).
- Ancient Woodland.
- Birds-eye figure.
- BRE articles on Designing Buildings Wiki.
- Building Research Establishment.
- Cat's paw figure.
- European Union Timber Regulation.
- Physical Properties of Wood.
- The differences between hardwood and softwood.
- Timber preservation.
- Timber vs wood.
- Types of timber.
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