Tree Stability Assessment (VTA)
The survey that estimates the risk of failure of a tree, with a visual method and, where needed, instrumental testing. To manage public and private tree assets safely.
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What VTA is
VTA (Visual Tree Assessment) is the recognised method for evaluating a tree's stability. It is based on a visual analysis of symptoms and defects — lean, decay, cavities, lesions, condition of the crown and of the root system — from which the propensity to failure is estimated.
When the visual examination is not enough, non-destructive instrumental testing is carried out, such as sonic tomography or a pull test, to "see" inside the trunk and measure the extent of the defects.
When it is needed
- Trees in frequented areas: parks, schools, avenues, car parks, gardens.
- After intense weather events or signs of decline in the plant.
- Management and safety of the tree assets of public bodies and condominiums.
- Disputes, insurance claims or felling/conservation requests.
- Before construction or site works near trees.
How I work
On-site inspection and recording of each specimen, a structured visual examination and, if necessary, instrumental investigations. Each tree is assigned a failure-propensity class, together with the related re-inspection interval.
What you get
A clear, defensible survey report: the condition of each tree, its risk class, the recommended interventions (pruning, bracing, felling) and the timing of the follow-up monitoring.
Every assessment is built on an inspection and on measured data: no generic wording, only operational and verifiable conclusions.
Do you have a tree or a green asset to assess?
Describe the situation: I'll reply with the first steps and an indication of the fee.
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