HomeMy WebLinkAboutTR_TRAQ form Bella Vista_10102024 — 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 history
Crown 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 growth
Client _______________________________________________________________ Date___________________ Time_________________
Address/Tree location _________________________________________________________ Tree no.____________ Sheet _____ of _____
Tree species _________________________________________ dbh_____________ Height ___________ Crown spread dia. ____________
Assessor(s) __________________________________________ Tools used______________________________ Time frame_____________
Target Assessment
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Target description Target protection
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History of failures _____________________________________________________________ Topography Flat Slope _________% Aspect _____
Site changes None Grade change Site clearing Changed soil hydrology Root cuts Describe _____________________________________
Soil conditions Limited volume Saturated Shallow Compacted Pavement over roots ______% Describe __________________________
Prevailing wind direction______ Common weather Strong winds Ice Snow Heavy rain Describe______________________________
Tree Health and Species Profile
Vigor Low Normal High Foliage None (seasonal) None (dead) Normal _____% Chlorotic _____% Necrotic _____%
Pests/Biotic_________________________________________________ Abiotic _______________________________________________________
Species failure profile Branches Trunk Roots Describe ____________________________________________________________________
Load Factors
Wind exposure Protected Partial Full Wind funneling ________________________ Relative crown size Small Medium Large
Crown density Sparse Normal Dense Interior branches Few Normal Dense Vines/Mistletoe/Moss _____________________
Recent or expected change in load factors _______________________________________________________________________________________ _
Tree Defects and Conditions Affecting the Likelihood of Failure
Occupancy
rate
1–rare
2 – occasional
3 – frequent
4 – constant
Basic Tree Risk Assessment Form
Page 1 of 2
Site Factors
Target zone
Condition(s) of concern
Load on defect N/A Minor Moderate Significant
Likelihood of failure Improbable Possible Probable Imminent
Load on defect N/A Minor Moderate Significant
Likelihood of failure Improbable Possible Probable Imminent
Part Size Fall Distance
Load on defect N/A Minor Moderate Significant
Likelihood of failure Improbable Possible Probable Imminent
Dead/Missing bark Abnormal bark texture/color
Codominant stems Included bark Cracks
Sapwood damage/decay Cankers/Galls/Burls Sap ooze
Lightning damage Heartwood decay Conks/Mushrooms
Cavity/Nest hole _____ % circ. Depth _______ Poor taper
Lean _____° Corrected? __________________________________
Response growth
Condition(s) of concern
Part Size Fall Distance
Collar buried/Not visible Depth________ Stem girdling
Dead Decay Conks/Mushrooms
Ooze Cavity _____% circ.
Cracks Cut/Damaged roots Distance from trunk _______
Root plate lifting Soil weakness
Response growth
Condition(s) of concern
Load on defect N/A Minor Moderate Significant
Likelihood of failure Improbable Possible Probable Imminent
Part Size Fall Distance
Part Size Fall Distance
Target
(Target number
or description)
Tree part Condition(s)
of concern Risk
rating
(from
Matrix 2)
Matrix 1. Likelihood matrix.
Likelihood
of Failure
Likelihood of Impact
Very low Low Medium High
Imminent Unlikely Somewhat likely Likely Very likely
Probable Unlikely Unlikely Somewhat likely Likely
Possible Unlikely Unlikely Unlikely Somewhat likely
Improbable Unlikely Unlikely Unlikely Unlikely
Failure Impact Failure & Impact
(from Matrix 1)
Likelihood
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Consequences
Likelihood of
Failure & Impact
Consequences of Failure
Negligible Minor Significant Severe
Very likely Low Moderate High Extreme
Likely Low Moderate High High
Somewhat likely Low Low Moderate Moderate
Unlikely Low Low Low Low
Data Final Preliminary Advanced assessment needed No Yes-Type/Reason ________________________________________________
Inspection limitations None Visibility Access Vines Root collar buried Describe ___________________________________________
Notes, explanations, descriptions
1.__________________________________________________________________________________ Residual risk ________
2.__________________________________________________________________________________ Residual risk ________
3.__________________________________________________________________________________ Residual risk ________
4.__________________________________________________________________________________ Residual risk ________
Overall tree risk rating Low Moderate High Extreme
Overall residual risk None Low Moderate High Extreme Recommended inspection interval __________________
This datasheet was produced by the International Society of Arboriculture (ISA) — 2017
North
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Matrix 2. Risk rating matrix.
Risk Categorization
Mitigation options