data collection

Data Collection


As with any tree survey or inspection, QTRA data can be collected using paper forms, handheld tablet computers and PDAs, or by dictation and transcription to spreadsheets.

We provide sample schedules for the survey of groups or compartments, multiple individual trees, or the detailed investigation of a specific individual.

These templates can be used for manual data entry or adapted to download electronically from data collection devices.

The Quantified Tree Risk Assessment Method

Manual Calculator

Registered Users are provided with our innovative manual calculator, which has three vanes that are rotated to select component probabilities and calculate their product.

Why not attend one of our training courses to become a registered user of our method?


Register your interest in qtra

Register your interest in QTRA training and we will send you an Introductory Information Pack and keep you informed of developments and training events.  When you have registered interest, you can select an event from our Training Calendar and make an online booking.


Our extensive global training courses and workshops will help you become an expert in tree safety and management. Attend one of our training courses to become a registered user of the method.


Get in touch

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