tree risk assessment

Other qtra publications

This page contains downloadable documents either published by Quantified Tree Risk Assessment Limited or presented by us and published elsewhere.

The original 2005 Journal of Arboriculture paper ‘Quantified Tree Risk Assessment Used in the Management of Amenity Trees’ is available here, but please be aware that the method has evolved and is now substantially different to that which is set out in this original paper.  For the current method, you should refer to the Quantified Tree Risk Assessment Practice Note, which is also available on this page.

Over the years, we have commented on court legal cases and public consultations pertaining to the management of risks from trees.  These documents are mainly to be found on this page, but where they relate to a legal case, our comments are to be found on the ‘Case Law’ page along with the associated legal documents.

QTRA PoF Thresholds

Best practice guidance for the application of VOSL in government regulation of risk. Published by The Australian Government, Department of the Prime Minister and Cabinet, Office of Best Practice Regulation. This note provides guidance on how officers preparing the cost-benefit analysis in Regulation Impact Statements should treat the benefits of regulations designed to reduce the risk of physical harm. A number of regulatory proposals are aimed at reducing the risk of physical harm, for example, occupational health and safety laws, warning labels on tobacco products and transport safety measures such as seat belt laws. This raises the issue of how to measure and articulate this benefit in a Regulation Impact Statement. Different methods have been proposed for valuing reductions in the risk of physical harm and this note sets out a method most appropriate for the best practice regulation process.

QTRA Property Targets - International currency conversions

In January each year, the QTRA target ranges for property are updated to take account of changes in currency exchange rates.

IE1 - Valuing One Off Events & Per Metre Valuation

Download the the zip folder and unzip to a folder of your choice. Open the file QTRA_ValuingOneOffEvents&PerMetreValuation.ppt in Microsoft PowerPoint. If you don’t have PowerPoint open the file pptview.exe and then select the file QTRA_ValuingOneOffEvents&PerMetreValuation.

Quantified Tree Risk Assessment Used in the Management of Amenity Trees


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