tree assessmentsdevelopment sitestrees & the law
Barnes & Associates Arboricultural and Landscape Consultants Ian & Sue Barnes

Detailed Tree Assessments

Tree safety management is a matter of limiting the risk of significant harm from tree failure, whilst maintaining the benefits conferred by trees. Although it may seem counter intuitive, the condition of trees should not be the first consideration. Instead, tree managers should consider first the usage of the land on which the trees stand, which in turn will inform the process of assessing the trees.

At barnes & associates we have various risk assessment methods, we have surveyors who are  ISA Tree Risk Qualified (TRAQ) and userd of the Quantified Tree Risk Assessment (QTRA) system, which applies established and accepted risk management principles to tree safety management. Firstly, the targets (people and property) upon which trees could fail are assessed and quantified, thus enabling tree managers to determine whether or not and to what degree of rigor a survey or inspection of the trees is required.

Where necessary, the tree or branch is then considered in terms of both impact potential (size) and probability of failure. Values derived from the assessment of these three components (target, impact potential and probability of failure) are combined to calculate the probability of significant harm occurring.

At Barnes & Associates, we have access to several highly sophisticated pieces of equipment that will assess the internal detail of trees to provide the most accurate depiction of their condition. The investigations detailed opposite are at the forefront of cutting edge technology;we currently have inhouse Picus Tomograph (SOT), Picus Electronic resistance tomography ‘Treetronic’ (ERT) and Thermal Camera.

Tree Assessments: