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MCA > BMP Tree Risk Assessment Vocab > Flashcards

BMP Tree Risk Assessment Vocab Flashcards

1
Q

Acceptable Risk

A

The degree of risk that is within the tolerance or threshold of the owner, manager, or controlling authority

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2
Q

Advanced Assessment (Level 3)

A

An assessment performed to provide detailed information about specific tree parts, defects, targets, or site conditions. Specialized equipment, data collection and analysis, and expertise are usually required.

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3
Q

Aerial Inspection

A

Inspection of parts of a tree not visible from the ground, including the trunk, stems, and branches; aerial inspections may include evaluation of internal decay

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4
Q

Aerial Patrol

A

Overflights of a utility right-of-way l, large areas, or individual trees to record the location of trees that are likely to fail and cause harm.

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5
Q

Basic Assessment (Level 2)

A

Detailed visual inspection of a tree and surrounding site that may include the use of simple tools. It requires that a tee risk assessor inspect completely around the tree trunk looking at the visible above ground roots, trunk, branches, and site

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6
Q

Bending Moment

A

A turning, bending, or twisting force exerted by a lever, defined as the force (acting perpendicular to the lever) multiplied by the length of the lever

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7
Q

Client

A

The person or organization for whom professional services are rendered. Usually, the owner or manager responsible for the trees.

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8
Q

CODIT

A

Compartmentalization Of Decay In Trees

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9
Q

Compartmentalization

A

Natural defense process in trees by which chemical and physical boundaries are created that act to limit the spread of disease and decay organisms

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10
Q

Consequences

A

Effects or outcome of an event. In tree risk assessment, consequences include personal injury, property damage, or disruption of activities due to the event

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11
Q

Cracks

A

Separation in wood fibers

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12
Q

Decay

A

Process of degradation by microorganisms

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13
Q

Defect

A

An imperfection, weakness, or lack of something necessary. In trees, defects are injuries, growth patterns, decay, or other conditions that reduce the trees structural strength.

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14
Q

Drive-By Assessment

A

Limited visual inspection from only one side of the tree, performed from a slow-moving vehicle; also may be called a windshield assessment.

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15
Q

Event

A

Occurrence of a particular set of circumstances. In tree risk assessment, a tree or tree part failing and impacting a target

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16
Q

Failure

A

(tree failure) Breakage of stems, branches, roots, or loss of mechanical support in the root system.

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17
Q

Failure Mode

A

Location or manner in which failure could occur or has occurred, for example, stem failure, root failure, or soil failure.

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18
Q

Harm

A

Personal injury or death, property damage, or disruption of activities.

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19
Q

Hazard

A

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.

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20
Q

Hazard Tree (hazardous tree)

A

A tree identified as a likely source of harm

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21
Q

Impact (verb)

A

Striking a target or causing a disruption that affects activities

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22
Q

Inspection Frequency

A

The number of inspections per given unit of time (for example, once every three years)

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23
Q

Inspection Interval

A

Time between inspections

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24
Q

Lean

A

Predominant angle of the trunk

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25
Q

Lever Arm

A

The distance between the applied force (or center of force) and the point where the object will bend or rotate.

26
Q

Likelihood

A

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 3) the combination of the likelihood of a tree failing and the likelihood of impacting a specified target.

27
Q

Likelihood of failure

A

The chance of a tree failure occurring within the specified time frame

28
Q

Likelihood of failure and impact

A

The chance of a tree failure occurring and impacting a target within the specified time frame

29
Q

Likelihood of impact

A

The chance of a tree failure impacting a target during the specified time frame

30
Q

Limited Visual Assessment (Level 1)

A

A visual assessment from a specified perspective such as a foot, vehicle, or aerial patrol of an individual tree or a population of trees near specified targets, to identify specified co dictions or obvious defects.

31
Q

Mallet

A

A broad headed hammer made of wood, plastic, or resin used for sounding a tree.

32
Q

Mitigation

A

The process of reducing risk

33
Q

Owner/Manager

A

The person or entity responsible for tree management, or the controlling authority that regulates tree management.

34
Q

Probability

A

The measure of the chance of occurrence expressed as a number between 0-1 (0-100%) where 0 is impossibility and 1 is absolute certainty

35
Q

Probe

A

A stiff small diameter rod, stick, or wire that is inserted into a cavity or crack to estimate its size or depth

36
Q

Qualitative risk assessment

A

A process using ratings of consequences and likelihood to determine risk significance levels and to evaluate the level of risk against qualitative criteria

37
Q

Quantitative risk assessment

A

A process used to estimate numerical probability values for consequences, and to calculate numeric values for risk

38
Q

Residual Risk

A

Risk remaining after mitigation

39
Q

Response Growth (adaptive growth)

A

New wood produced in response to loads to compensate for higher strain in marginal fibers; includes reaction wood (compression and tension) flexure wood, and wound wood.

40
Q

Ribs

A

Longitudinal bulged of response wood growth

41
Q

Risk

A

The combination of the likelihood of an event and the severity of the potential consequences. In the context of trees, risk is the likelihood of a conflict or tree failure occurring and affecting a target, and the severity of the associated consequences - personal injury, property damage, or disruption of activities

42
Q

Risk aggregation

A

The consideration of risks in combination

43
Q

Risk analysis

A

The systematic use of information to identify sources and to estimate the risk

44
Q

Risk assessment

A

The process of risk identification, analysis, and evaluation

45
Q

Risk evaluation

A

The process of comparing the assessed risk against given risk criteria to determine the significance of the risk

46
Q

Risk management

A

The application of policies, procedures, and practices used to identify, evaluate, mitigate, monitor, and communicate risk.

47
Q

Risk Matrix

A

A tool for ranking and displaying risks by assigning ratings for consequences and likelihood.

48
Q

Sounding

A

The process of striking a tree with a mallet or other appropriate tool and listening for tones that indicate dead bark, a thin layer of wood outside a cavity, or cracks in wood.

49
Q

Structural Defect

A

Feature, condition, or deformity of a tree that indicates a weak structure or instability that could contribute to tree failure

50
Q

Sudden branch drop

A

Sudden, unanticipated failure of a tree branch with little or no discernible defect; often associated with long, horizontal branches and warm temperatures

51
Q

Taper

A

Change in diameter over the length of trunks, branches, and roots

52
Q

Target (risk target)

A

People, property, or activities that could be injured, damaged, or disrupted by a tree failure

53
Q

Target Zone

A

The area where a tree or tree part is likely to land if it were to fail

54
Q

Time Frame

A

Time period for which an assessment is defined

55
Q

Tree Risk Assessment

A

A systematic process used to identify, analyze, and evaluate tree risk.

56
Q

Tree risk management

A

The application of policies, procedures, and practices used to identify, evaluate, mitigate, monitor, and communicate tree risk.

57
Q

Unacceptable Risk

A

A degree of risk that exceeds the tolerance of the owner, manager, or controlling authority

58
Q

Walk by assessment

A

A limited visual assessment l, usually from one side of the tree, performed as the tree risk assessor walks by the tree(s)

59
Q

Windthrow

A

Uprooting and overthrowing of a tree caused by wind

60
Q

Wood decay

A

The process of wood degradation by microorganisms

MCA (11 decks)

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