Critical root zone definition

Critical root zone means the zone in which the roots of a tree are located, as defined in the latest version of the Trees Technical Manual. It is also the area around a tree which should be undisturbed unless protection measures are provided to protect the long-term viability of the tree.
Critical root zone. (CRZ) means the area of soil around a tree where the minimum amount of roots considered critical to the structural stability or health of the tree are located. CRZ can be determined using the dripline of the tree.
Critical root zone means the area around a tree requiring protection, as determined by an arborist; generally, the area surrounding a tree trunk at a distance equal to one foot for every inch of tree diameter.

More Definitions of Critical root zone

Critical root zone means the protection zone for an individual tree or an area defined by a circle with a
Critical root zone means the area of land surrounding the trunk of a tree contained within a circle of radius equal to the DBH of the tree multiplied by 18; or equal to the dripline of the tree; whichever is greater.
Critical root zone. (CRZ) means the area on the ground surrounding a tree that is one
Critical root zone means the protection zone for an individual tree or an area defined by a circle with a diameter 36 times the DBH of the tree (or 1.5' of radius for each inch of DBH) or such smaller area as determined by the City Manager in a tree impact assessment.
Critical root zone means the area in which the tree's roots are located. This root zone is generally the area surrounding a tree at a distance which is generally equal to one foot for every d.b.h inch of tree.
Critical root zone or “CRZ” means a circular area determined by either of the following methods. The method used shall be indicated on the plans.
Critical root zone or “CRZ” means the area around a tree that is established as being 10 centimetres from the trunk for every centimetre of trunk diameter at breast height (DBH) and is calculated as DBH x 10 cm, where DBH is measured: