Tree risk assessment starts with understanding wood biology. In this in-depth arborist training, we break down tree biology, wood structure, and decay science using ANSI A300 Part 9 and ISA TRAQ definitions.You’ll learn how brown rot, white rot, soft rot, basal rot, and decay fungi affect structural stability, how CODIT compartmentalization influences a column of decay, and why residual wall thickness matters more than simply identifying a cavity. We also explain incipient decay, advanced decay, barrier zones, reaction zones, and fungal fruiting structures such as conks and brackets.If you are preparing for the ISA Tree Risk Assessment Qualification, BCMA exam, or improving your consulting arborist reports, this video will strengthen your understanding of likelihood of failure and defensible risk ratings.Professional tree risk assessment is applied biology and applied physics. Understanding wood decay is the difference between guessing and assessing.#TreeRiskAssessment #ArboristTraining #ANSI300 #TRAQ #WoodDecay #UrbanForestry

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Search: “Arborist Podcast” or visit: http://www.youtube.com/@arboristpodcast