Representing Arborists in Queensland
PO Box 327, Cleveland Q. 4163
Mon-Fri: 8:00am - 4:00pm

december, 2016

18dec10:00 am- 4:00 pmQuantified Tree Risk Assessment (QTRA)Estimating Probability of Failure - A field day for arborists


Event Details

Date 18 December, 2016
Course Estimating Probability of Failure – A field day for Arborists
Venue Brisbane venue to be confirmed
Access information 10:00 start and 16:00 finish. Bring a packed lunch + drink
Cost Free of Charge
Places 20


Estimating the likelihood of tree or branch failure is a key component of any tree risk assessment. In QTRA, we use a system of bench marking our estimates, where we consider those things that we are least confident in (partially compromised trees and branches) against our two benchmarks (a. structurally optimised trees and b. wholly compromised trees) where we have the greatest confidence in our judgement.

In 2015 we ran several field days where Arborists were able to trial our approach, calibrating their estimates and putting them into one of the QTRA Probability of Failure ranges. These field days are free of charge and you don’t need to be a QTRA user.

For more information or to book, please contact: or visit website: QTRA website



(Sunday) 10:00 am - 4:00 pm


Venue to be confirmed


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