Representing Arborists in Queensland
PO Box 327, Cleveland Q. 4163
Mon-Fri: 8:00am - 4:00pm

How to Correctly Measure Diameter at Breast Height (DBH)

The DBH is essential for calculating the Tree Protection Zone (TPZ). DBH is normally given as the diameter of the trunk/stem of the tree at 1.4 metres from the ground. In some circumstances it is not possible to measure a diameter at this height: please see the diagrams for variations.image-set-2

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