Joseph Pidutti - Consulting Arborist

Lake Macquarie - Newcastle - Hunter Region - Wyong

Diploma in Arboriculture - AQF Level 5  mobile 0412 996659  office 49471219      email


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Root Investigations

Typically, most roots are found within the top 900mm of soil, and most of the fine roots active in water and nutrient absorption are in the top 300mm of soil

 The root system of a typical tree can be described as shallow, widespread and horizontally oriented.  A root system can extend far beyond the edge of the canopy.   A trees root system is to supply the crown with water and nutrients absorbed from the soil.  Tree roots anchor the tree and their continued function is an important factor for trees to survive.

Root systems of large trees are often expansive and can cause damage to building structures and associated infrastructures such as sewer pipes, paths, retaining walls if planted to close.

Root investigations and location are affective in determining impacts of developments on a tree especially where foundation footings, trenches or grade changes are proposed within the root zone. 

Decline in tree health and vigour can also be attributed to root damage or other problems associated with in the root system.   

The only reliable way to estimate root disturbance is to determine the location of the roots. The most effective method is to carefully remove the soil around the root zone and expose them.

Numerous methods to investigate and locate roots include:

         Hand digging using conventional tools

         Probing with metal rod 

         Hydraulic excavation

         Water pressure


         Air spade  


Root Investigation/ location

can more accurately

determine impacts of

construction on trees


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Last modified: Oct 12th, 2020