Hazard Assessment & Tree Protection Flashcards
Trees often produce ___________________________, providing more stability to compensate for lean.
Prop Roots
Reaction Wood
Rays
Watersprouts
Reaction Wood
Which of the following is NOT a necessary component in the existence of tree risk?
An environment that may contribute to failure
A tree with a potential for failure
A tree with a history of previous failures
A person or object that may be injured or damaged.
A tree with a history of previous failures
Trees that lean because of ground failure or root injury:
Are not a threat unless located at the edge of a wooded area
Are a risk only if they begin to grow in compensation for the lean.
Have a high potential to fail
Are less of a risk than those that lean due to phototropism
Have a high potential to fail
Arborists, as trained professionals in tree care,
None of these
Must be qualified to perform a root crown inspection
All of these
Will be held to a higher standard of care than general citizens.
Are required to have formal training in risk management
Will be held to a higher standard of care than general citizens.
True or False
Individuals may not escape liability for damages resulting from a fallen tree or branch if the defect that caused the failure was known of or should have been known of.
True
True or False
Ideally, a cable should be installed in a tree perpendicular to the line that bisects the angle of the branch union.
True
By definition, if there is no _______________ a tree cannot pose a risk.
Disease
Decay
Target
Defect
Target
True or False
A tree may appear to be solid and structurally sound, and may have a thick, green canopy, yet can have significant decay inside.
True
Rigid structures mounted or built on the ground to support a branch or trunk are called:
Stakes
Scaffolds
Braces
None of these
Props
Props
For structural strength, branches should be __________________ in diameter than their parent limbs or trunk.
Equal
Smaller
Larger
Smaller
True or False
The installation of metal cables, if done properly, will not wound the tree.
False
The purpose of a lightning protection system is to:
Reduce the voltage of the strike
None of these
Conduct the electrical charge into the soil away from the tree.
Prevent the tree from being struck
All of these
Conduct the electrical charge into the soil away from the tree.
Codominant stems often have __________________________ within the branch union, making them structurally less stable.
Insect colonies
Decay
Fungus
Included bark
Included bark
True or False
Current research indicates that filling cavities may do more harm than good because decay can develop in the interface between filler and tree.
True
