Following the initial constraints survey and preparation of the arboricultural impact plan, a series of investigative trial holes were carefully excavated by hand to assess for the presence or absence of tree roots along the perimeter of the proposed family room extension. This would provide a greater understanding as to the actual root spread of the trees, and the likely conflict with the foundations of the proposed family room extension.
Given the accumulation of roots identified, a traditional trench foundation type was not considered appropriate in this instance.
The proposed extension to the northern elevation was proposed to be constructed upon an engineered foundation type. This detailed an engineered design pile, with a surface ground beam to provide an elevated support surface with only a minimal requirement for ground excavation.
The piles could be installed using small precision devises without the requirement for heavy plant machinery. The removal of foundations and built-up ground within the RPAs of retained trees was to be undertaken under the supervision/guidance of the project arboriculturist acting as the Arboricultural Clerk of Works (ACoW).
The arboricultural report was assessed by the Warwick District Council Arboriculturist who determined that the statement addressed all previous concern raised, and was considered acceptable. The decision notice was conditioned to be carried out wholly in accordance with the tree protection measures detailed in our method statement.
We will be acting as the project arboriculturist throughout the construction of the approved scheme, in order to fully comply with the tree related planning conditions.