The Quantified Tree Risk Assessment (QTRA) method, developed by Mike Ellison at Cheshire Woodlands, applies established and accepted risk management principles to tree safety management. The method moves the management of tree safety away from labelling trees as either ‘safe’ or ‘unsafe’ and in most situations away from requiring definitive judgements from either tree assessors or tree managers. Instead, QTRA quantifies the risk from tree failure in a way that enables tree managers to balance safety with tree value.
By quantifying the risk from tree failure, QTRA enables a tree owner or manager to manage the risk in accordance with widely applied and internationally recognised levels of risk tolerance. QTRA also provides a decision-making framework which allows decision-makers to consider the balance between the benefits provided by trees, levels of risk they pose, and costs of risk management.
Following a court case where a council was heavily fined following the death of a schoolgirl who had been hit by a falling tree, the Health and Safety Executive (HSE) issued an ebulletin entitled ’Safety of trees on school premises and playing fields’ in January 2023. Rather than setting out what it believes the legal […]
This mid 18th century landscape will be changed forever if Cheshire East Council’s proposal for dam wall improvements goes ahead. Built in the mid 1700s, the dam wall embankment between Poynton Pool and the A523 London Road has, to our knowledge, never overflowed or been breached, but on the basis of a recent inspection the […]
Trees on your land are your responsibility. Take a look around once in a while to check that the trees remain healthy and aren’t causing any obvious risks to neighbours or the public. If you have any doubts, call in a specialist. In spring and summer, water any newly-planted trees regularly, especially at times of […]
Cheshire Woodlands use of Quantified Tree Risk Assessment has proved invaluable. It has helped us to retain trees that were condemned by another advisor. They have used measurable data to provide us with a valid tree risk assessment.