Birds-eye figure
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 suggests that.
|
Birds-eye figure can be easily mistaken for the burr figure that is created by epicormic growth due to a similarity in appearance. However, birds-eye figure is caused by irregularities in the growth rings in the form of depressions or dimples which, once formed, are perpetuated through the stem. These elements run in various directions more or less at right angles to the stem surface. The irregularities of the growth rings will show on tangentially cut surfaces as (a) highly ornamental mass of circular ‘eyes’. Burr is an irregular-shaped swelling or excrescence found most often on the lower main trunk, but also on branches and rootstocks of a range of tree species. A burr can take on several forms: it may consist of clusters of expanding slow-growing epicormic buds or be formed from a distinct series of irregular contorted swirls. |
[edit] Find out more.
[edit] 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.
- BRE articles on Designing Buildings Wiki.
- Building Research Establishment.
- Burr.
- Carpentry.
- Dunnage.
- End racking.
- European Union Timber Regulation.
- Physical Properties of Wood.
- Ripple figure.
- Spalting.
- The differences between hardwood and softwood.
- Tiger-stripe figure.
- Timber preservation.
- Timber vs wood.
- Timber.
- Types of timber.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Introduction to radon awareness
New technical information sheet published by CIOB.
Updated supplier guide can help electrical contractors engage with NHP.
CIAT confirm the winners of the 2026 architectural technology awards.
Government launches a one stop shop for flood preparedness.
Sir Edwin Lutyens: Britain's greatest architect? Book review.
CIOB publishes free template to help assess and manage risks.
ECA's reflections on Party Conference season
Burnham wants to be confident of winning before asking for a fresh mandate.
New Chief Construction and Scientific Adviser
Sergio Cavalaro, Professor of Infrastructure Systems at Loughborough University.
Building safety levy for England
CIAT publish estimator tool for members.
Water sector faces a growing crisis that could slow the delivery of vital infrastructure.
Undervaluing our industrial past
Heritage value changes as taste for building styles changes.
Changing expectations around competence and compliance
New information sheet from CIAT.