Tools: Technologies and Methods

Ground Penetrating Radar (GPR)

We are pleased to announce that we are now able to offer tree root scanning to our clients.
What is it?
– Technique used for more than 30 years to locate objects underground including pipes, drums, etc.
– The use of this technique has recently been adapted to scan and map tree root systems.
– Completely non-invasive therefore allows for repeated measurements that reveal long-term root system development.
– Can detect root distribution beneath hard surfaces such as concrete, asphalt or brick.
– Detection of roots as small as 1 cm in diameter.
Results provided in a report that includes visuals of the root distribution.
This is the perfect tool to use during the planning phase of construction projects to help determine the potential impacts of excavation on trees identified for conservation.

Interested?

GPR

Tomography

Tomography uses sound wave sensors to assess the internal structural condition of a tree. The result is a precise colour image (2D and 3D) that corresponds to the degree of degradation of the wood, thus making it easier for the customer to understand.

This tool does not cause any significant damage to the tree. It can be used in a variety of situations:

  • Heritage or historic trees
  • Rare or exceptional trees
  • Expertise for legal purposes.

Interested?

Tomography

Resistography

Resistography uses a measuring tool to assess a tree’s structural condition. At the same time that a small drill bit is inserted into the wood, a needle on the resistograph instantly depicts the resistance of the wood onto a paper. This tool can therefore be used to assess the quality of wood (sound or rotten) in a living tree or wooden structure.

Interested?

Resistography

QTRA method

QTRA (Quantified Tree Risk Assessment) is a quantitative method, because it quantifies the degree of risk, or rather, the mathematical probability of an event occurring – i.e., the breakage of a tree or part of a tree – and the consequences that this breakage may have. One advantage of the quantitative QTRA method is that the risk can be compared not only with that of other trees, but also with other types of risk, and this, in the context of decision-making.

Interested?

QTRA

TRAQ method

The TRAQ (Tree Risk Assessment Qualification) method gives a qualitative result in terms of the degree of risk, according to the following four classes: low, moderate, high, extreme. The TRAQ methodology categorizes qualitative risk in terms of “possibility” or “likelihood”.

Interested?

TRAQ

VTA method

The VTA (Visual Tree Assessment) method is a recognized method for tree inspection. This method makes it possible to visually identify external structural defects on a tree. Thanks to this analysis, it is then possible to determine whether a more in-depth analysis (i.e. of the tree’s internal structure) is recommended using the PICUS tomograph and/or resistograph. Our experts are able to give the necessary recommendations to safely conserve the tree, or to determine whether it should be felled for safety reasons.

Interested?

VTA

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