Transcription of Basic Tree Risk Assessment Form
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Basic Tree Risk Assessment Form
Trunk Crown and Branches Roots and Root Collar Unbalanced crown LCR _____% Dead twigs/branches ____% overall Max. dia. _____Broken/Hangers Number _____ Max. dia. _____Over-extended branches Pruning historyCrown cleaned Reduced Flush cuts Thinned Topped Other Raised Lion-tailed Cracks _____ Lightning damage Codominant _____ Included bark Weak attachments _____ Cavity/Nest hole ____% circ. Previous branch failures _____ Similar branches present Dead/Missing bark Cankers/Galls/Burls Sapwood damage/decay Conks Heartwood decay _____ Response growthCollar buried/Not visible Depth_____ Stem girdling Dead Decay Conks/Mushrooms Ooze Cavity _____% Cut/Damaged roots Distance from trunk _____Root plate lifting Soil weakness Response growthMain concern(s)Load on defect N/A Minor Moderate Significant Dead/Missing bark Abnormal bark texture/color Codominant stems Included bark Cracks Sapwood damage/decay Cankers/Galls/Burls Sap ooze Lightning
Overall residual risk Low Moderate High Extreme Recommended inspection interval_____ This datasheet was produced by the International Society of Arboriculture (ISA) and is intended for use by Tree Risk Assessment Qualified (TRAQ) arborists – 2013 North Page 2 of 2 Matrix 2. Risk rating matrix. Risk Categorization
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