We had to dismantle this veteran beech tree in December, following a survey using a Picus test…
The tree, Fagus sylvatica purperea, had a diameter 2150mm, an 8m circumference and was 18m tall
We used Picus Sonic Tomograph technology; this is a specialised electronic instrument which can ‘look’ internally into a branch or tree trunk and display a computer-generated image of its condition. It achieves this by measuring the speed that sound travels through the wood in a number of different positions and directions. Sound travels fastest through solid wood. Decayed wood will slow its path. By measuring the speed that sound takes to pass through a tree, an idea of its condition can be obtained. In this case, the Tomograph showed a central cavity surrounded by advanced and early decay and the report’s conclusion was to fell the tree as soon as practically possible, and for the work to be carried out by a fully-qualified and insured tree surgeon to BS3998 (tree work) which of course we are!
You’ll see from the pictures below that there is very little viable timber at the base. What there was, was cut up for the client’s use.
For more information about our tree surveys, please see here: https://www.conservation-contractors.co.uk/services/tree-surveys/ or if you are concerned about one of your trees and think a Picus test would be sensible, please email William.