BS5837 Root Protection Area Calculation: How Does It Work?

BS5837 root protection area calculation is a part of the standardised guidelines that local planning authorities expect all construction, demolition, renovation or property development companies to follow. But what exactly is meant by the 'root protection area'? How is it worked out? Why is it needed?

Well, the root protection area (RPA) is a zone on a patch of land in which it is recommended that no construction or developmental work takes places. This is not only to protect the roots of a tree, but also to protect any potential new builds from future subsidence issues and claims. For this reason, a consultant such as an arborist must be conferred with to help determine the area that is required for a tree to both survive and grow within a development. Trees can be protected in the UK by tree protection orders (TPOs) and cannot just be merely felled if they are in the way of any development plans. The calculation to determine the zone is done via a measurement from the radius of the stem's centre to determine the diameter at breast height. This figure is then multiplied by 12 to determine the root protection zone (RPZ). However, this depends on whether any features exist within the zone – such as buildings, streams, roads, paths and so on. If so, then the figure is offset. To calculate the necessary figures, a qualified arborist must first perform a BS5837 tree survey. Thankfully, you needn't look too far to find such an arborist with years of experience in providing tree survey services.

Braemar Arboriculture Limited has been providing such services to companies in the property development, construction, demolition and renovation industries for over 13 years. We have performed countless BS5837 root protection area calculation processes successfully and accurately to secure our clients the best chance of obtaining planning permission. Join them by emailing or by visiting today.