 Tree protection zones| Critical root zones| Critical Root Radius| AUSTRALIA
PDF dated 27th September 2005 for ACT Australia protection zones.
First I have heard/seen of it, could be adapted into your reports, there is no actual Australian Standard for this issue and I have been using the British Standard BS 5837. If anyone has that British Standard do they mind putting it in this thread.
This formula is drip line + 2m or where there's absence of drip line a distance of 4m from the trunk (radius) which ever is the greater. The diagram shows it. The downfall would be tall thin trees, Italian cypress, pencil pines etc. |