NHBC Surveys
The extraction of moisture from the ground by trees, hedgerows and shrubs can cause ground movement which has the potential to affect foundations and result in damage to built structures.
In order to minimise this risk, foundations are designed in accordance with guidance produced by the National House Building Council to take into account the vegetation present, or that which may have been removed or significantly reduced in height.
A tree survey in accordance with the guidance contained within NHBC Chapter 4.2 will collect information on tree species and height, which would provide a sufficient level of information for a structural engineer to calculate the required depth of foundations and ensure construction of development meets the required standards.
At FPCR we undertake such surveys and our CAD plans illustrate the position of the tree cover, the species, subsequent water demand and potential zones of influence and we ensure this information is presented in a clear and understandable way.