BMP - Tree Risk Assessment - 38
Buildings that are substantial provide protection to people inside them so
this factor is considered in the likelihood of impact.
Vehicles provide some protection against small-diameter falling branches.
People in vehicles struck by a medium-sized branch may be injured but are
usually not killed, so the level of consequences is reduced by the structure
of the vehicles.
Trees can also cause
accidents if they fall across
a motorway in front of moving traffic. Because of this,
when evaluating targets
near roads and parking lots,
consideration should be
given to traffic flow, speed,
street configuration, and
occupancy rates.
Consequences of failures
can be categorized using the
following guidelines:
Severe consequences are
those that could involve
serious personal injury or
death, high-value property
damage, or major disruption of important activities.
Examples of severe consequences include:
Figure 8. A medium-sized branch can cause significant
or severe consequences to the people it strikes.
*
*
*
*
Injury to one or more people that may result in hospitalization or death
Destruction of a vehicle of extremely high value
Major damage to or destruction of a house
Serious disruption of high-voltage distribution circuits or transmission power lines
Significant consequences are those that involve substantial personal injury,
property damage of moderate to high value, or considerable disruption of
activities. Examples of significant consequences include:
*
*
Injury to a person requiring medical care
Serious damage to a vehicle
38
BMP - Tree Risk Assessment
Table of Contents for the Digital Edition of BMP - Tree Risk Assessment
Table of Contents
BMP - Tree Risk Assessment - Cover1
BMP - Tree Risk Assessment - Cover2
BMP - Tree Risk Assessment - i
BMP - Tree Risk Assessment - ii
BMP - Tree Risk Assessment - Table of Contents
BMP - Tree Risk Assessment - iv
BMP - Tree Risk Assessment - 1
BMP - Tree Risk Assessment - 2
BMP - Tree Risk Assessment - 3
BMP - Tree Risk Assessment - 4
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BMP - Tree Risk Assessment - Cover3
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