This episode explores the statistically integrated method (SIM), a non-destructive approach for assessing tree stability using pulling tests (elasto-inclino method). Developed at the University of Stuttgart, this method considers wind loading, trunk geometry, and wood properties. The results of thousands of tests demonstrate its suitability for evaluating the risk potential of old trees, disproving simpler methods based solely on trunk geometry.

The episode details the execution of the test, wind load analysis, and interpretation of results, including a discussion of the method’s limitations and the need for further research. It emphasizes the importance of a comprehensive approach that integrates biological and mechanical aspects to accurately assess tree stability.

Background information:

• Brudi et Van Wassenaer. 2001. Trees and Static_ Non-Destructive Failure Analysis.pdf
• Detter et al. 2005. Statics Integrated Method_ Results from pulling tests in the past decades.pdf
• SAG Pulling Test.pdf
• Static Load Testing - L. Wessolly and G. Sinn at the University of Stuttgart (Sinn and Wessolly, 1989)

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