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drive-by assessment-limited visual inspection from only one side of the
tree, performed from a slow-moving vehicle; also may be called a windshield
assessment.
event-occurrence of a particular set of circumstances. In tree risk assessment,
a tree or tree part falling and impacting a target.
failure (tree failure)-breakage of stems, branches, roots, or loss of mechanical support in the root system.
failure mode-location or manner in which failure could occur or has occurred; for example, stem failure, root failure, or soil failure.
harm-personal injury or death, property damage, or disruption of activities.
hazard-situation or condition that is likely to lead to a loss, personal injury,
property damage, or disruption of activities; a likely source of harm. In relation to trees, a hazard is the tree part(s) identified as a likely source of harm.
hazard tree (hazardous tree)-a tree identified as a likely source of harm.
impact (verb)-striking a target or causing a disruption that affects activities.
inspection frequency-the number of inspections per given unit of time (for
example, once every three years).
inspection interval-time between inspections.
lean-predominant angle of the trunk.
lever arm-the distance between the applied force (or center of force) and
the point where the object will bend or rotate.
likelihood-the chance of an event occurring. In the context of tree failure,
the term may be used to specify: 1) the chance of a tree failure occurring;
2) the chance of impacting a specified target; and 3) the combination of the
likelihood of a tree failing and the likelihood of impacting a specified target.
likelihood of failure-the chance of a tree failure occurring within the specified time frame.
likelihood of failure and impact-the chance of a tree failure occurring and
impacting a target within the specified time frame.
likelihood of impact-the chance of a tree failure impacting a target during
the specified time frame.

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BMP - Tree Risk Assessment

Table of Contents for the Digital Edition of BMP - Tree Risk Assessment

Table of Contents
BMP - Tree Risk Assessment - Cover1
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BMP - Tree Risk Assessment - i
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BMP - Tree Risk Assessment - Table of Contents
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