Arborist Certification Study Guide
UPDATED Exam Questions and CORRECT
Answers
Before installing a cable in a tree, an arborist must - CORRECT ANSWER - Determine
whether the cable will mitigate the risk of failure.
Assess the structural stability of the tree's root collar and root system.
Determine the extent of any decay present and the risk it poses.
Cables are installed in trees to - CORRECT ANSWER - Support heavy limbs or limit
movement of limbs with weak connections
In the US, standards for the installation of cables are published in the - CORRECT
ANSWER - ANSI A 300 part 3 standards for tree support systems
The purpose of the thimble in cable installation is to - CORRECT ANSWER - Protect the
cable from excessive wear and increase the bend radius.
In which of the following situations should through-hardware, rather than lags, be used? -
CORRECT ANSWER - Limbs are larger than 8"-10" in diameter at point of installation.
Decay is present in one or more of the limbs at the point where the hardware must be installed.
It would not be possible to seat the length of the lag's thread.
All of the above
EHS cable is attached to anchoring hardware using - CORRECT ANSWER - A thimble
and dead end grips
A ship auger (wood auger) is used for drilling hardware installation holes because - CORRECT
ANSWER - It works efficiently in green wood and pulls the shavings from the hole.
,A come-along can be used to - CORRECT ANSWER - pull limbs closer together to ensure
the cable installation will be taut.
A device used to temporarily hold a cable, allowing the arborist to pull the cable to the anchor. -
CORRECT ANSWER - cable grip
Anchor hardware should be installed - CORRECT ANSWER - in direct line with the pull
of the cable.
Wrapping common-grade cable around a thimble, separating the strands, and taking at least two
turns per strand on the standing part of the cable - CORRECT ANSWER - forms an eye-
splice termination.
When multiple cables are installed on a limb, - CORRECT ANSWER - only one cable
should be attached to each anchor.
A potential advantage to dynamic support systems is that they - CORRECT ANSWER -
allow for more limb movement (sway).
Tree support systems that incorporate rope or other non-rigid supports are referred to as -
CORRECT ANSWER - dynamic support systems.
A potential advantage to dynamic support support systems is that they - CORRECT
ANSWER - can provide a shock absorbing effect.
The use of steel rod(s) in limbs, leaders, or trunks to provide support for a junction is called -
CORRECT ANSWER - bracing.
The type of rod that should be used in large trees, soft-wooded trees, or decayed wood is a -
CORRECT ANSWER - machine threaded rod.
,Bracing is used to - CORRECT ANSWER - reinforce weak junctions or to strengthen
decayed areas.
Tree-to-ground guys should be attached to the tree at a height - CORRECT ANSWER - at
or above the tree's midpoint.
Guying of mature trees is often permanent because - CORRECT ANSWER - the tree may
not produce support wood/roots after being guyed.
The installation of a cable between a tree and an external anchor is called - CORRECT
ANSWER - guying.
Some differences between 7-strand, common-grade cable and extra -high-strength (EHS) cable
are - CORRECT ANSWER - 7-strand, common-grade cable is more malleable (bendable);
EHS cable is stonger.
The type of washers recommended for use in securing through-hardware is - CORRECT
ANSWER - heavy-duty, round washers.
A handy piece of equipment that can be used to spread open thimbles, tighten lags, and help
wrap dead-end grips onto the cable is a - CORRECT ANSWER - cable aid.
To provide added support to trees that have been braced, - CORRECT ANSWER - cables
are usually installed as well.
Generally, cables should be installed - CORRECT ANSWER - Two-thirds the distance
from the weak branch union to the branch tips.
When more than one cable is installed on a limb, the cables should be spaced - CORRECT
ANSWER - no closer together than the distance equal to the diameter of the limb, or 12
inches, whichever is less.
, An advantage to using a threaded rod and an amon-eye nut as a means of anchoring a cable is -
CORRECT ANSWER - any length of rod can be cut to fit the branch.
If multiple cables are required - CORRECT ANSWER - strength can be achieved by
cabling limbs in triangular combinations.
Eye bolts are installed in trees through pre-drilled holes that are - CORRECT ANSWER -
1/16 to 1/8 inch larger in diameter than the eye bolt.
Which of the following do trees require in relatively large quantities? - CORRECT
ANSWER - Macronutrients.
In urban soils, the presence of available essential elements and microorganism activity is usually
- CORRECT ANSWER - decreased.
Removing leaf litter and other natural sources of nitrogen can - CORRECT ANSWER -
disrupt nutrient cycling in the soil.
The most limiting factor in fertilizer uptake is - CORRECT ANSWER - Water availability.
A 60 pound bag of 10-6-4 fertilizer contains how many pounds of actual nitrogen? - CORRECT
ANSWER -6
A complete fertilizer contains - CORRECT ANSWER - nitrogen, phosphorus, and
potassium.
In the drill-hole fertilizer application method, the holes should extend from near the trunk to near
the - CORRECT ANSWER - drip line.
UPDATED Exam Questions and CORRECT
Answers
Before installing a cable in a tree, an arborist must - CORRECT ANSWER - Determine
whether the cable will mitigate the risk of failure.
Assess the structural stability of the tree's root collar and root system.
Determine the extent of any decay present and the risk it poses.
Cables are installed in trees to - CORRECT ANSWER - Support heavy limbs or limit
movement of limbs with weak connections
In the US, standards for the installation of cables are published in the - CORRECT
ANSWER - ANSI A 300 part 3 standards for tree support systems
The purpose of the thimble in cable installation is to - CORRECT ANSWER - Protect the
cable from excessive wear and increase the bend radius.
In which of the following situations should through-hardware, rather than lags, be used? -
CORRECT ANSWER - Limbs are larger than 8"-10" in diameter at point of installation.
Decay is present in one or more of the limbs at the point where the hardware must be installed.
It would not be possible to seat the length of the lag's thread.
All of the above
EHS cable is attached to anchoring hardware using - CORRECT ANSWER - A thimble
and dead end grips
A ship auger (wood auger) is used for drilling hardware installation holes because - CORRECT
ANSWER - It works efficiently in green wood and pulls the shavings from the hole.
,A come-along can be used to - CORRECT ANSWER - pull limbs closer together to ensure
the cable installation will be taut.
A device used to temporarily hold a cable, allowing the arborist to pull the cable to the anchor. -
CORRECT ANSWER - cable grip
Anchor hardware should be installed - CORRECT ANSWER - in direct line with the pull
of the cable.
Wrapping common-grade cable around a thimble, separating the strands, and taking at least two
turns per strand on the standing part of the cable - CORRECT ANSWER - forms an eye-
splice termination.
When multiple cables are installed on a limb, - CORRECT ANSWER - only one cable
should be attached to each anchor.
A potential advantage to dynamic support systems is that they - CORRECT ANSWER -
allow for more limb movement (sway).
Tree support systems that incorporate rope or other non-rigid supports are referred to as -
CORRECT ANSWER - dynamic support systems.
A potential advantage to dynamic support support systems is that they - CORRECT
ANSWER - can provide a shock absorbing effect.
The use of steel rod(s) in limbs, leaders, or trunks to provide support for a junction is called -
CORRECT ANSWER - bracing.
The type of rod that should be used in large trees, soft-wooded trees, or decayed wood is a -
CORRECT ANSWER - machine threaded rod.
,Bracing is used to - CORRECT ANSWER - reinforce weak junctions or to strengthen
decayed areas.
Tree-to-ground guys should be attached to the tree at a height - CORRECT ANSWER - at
or above the tree's midpoint.
Guying of mature trees is often permanent because - CORRECT ANSWER - the tree may
not produce support wood/roots after being guyed.
The installation of a cable between a tree and an external anchor is called - CORRECT
ANSWER - guying.
Some differences between 7-strand, common-grade cable and extra -high-strength (EHS) cable
are - CORRECT ANSWER - 7-strand, common-grade cable is more malleable (bendable);
EHS cable is stonger.
The type of washers recommended for use in securing through-hardware is - CORRECT
ANSWER - heavy-duty, round washers.
A handy piece of equipment that can be used to spread open thimbles, tighten lags, and help
wrap dead-end grips onto the cable is a - CORRECT ANSWER - cable aid.
To provide added support to trees that have been braced, - CORRECT ANSWER - cables
are usually installed as well.
Generally, cables should be installed - CORRECT ANSWER - Two-thirds the distance
from the weak branch union to the branch tips.
When more than one cable is installed on a limb, the cables should be spaced - CORRECT
ANSWER - no closer together than the distance equal to the diameter of the limb, or 12
inches, whichever is less.
, An advantage to using a threaded rod and an amon-eye nut as a means of anchoring a cable is -
CORRECT ANSWER - any length of rod can be cut to fit the branch.
If multiple cables are required - CORRECT ANSWER - strength can be achieved by
cabling limbs in triangular combinations.
Eye bolts are installed in trees through pre-drilled holes that are - CORRECT ANSWER -
1/16 to 1/8 inch larger in diameter than the eye bolt.
Which of the following do trees require in relatively large quantities? - CORRECT
ANSWER - Macronutrients.
In urban soils, the presence of available essential elements and microorganism activity is usually
- CORRECT ANSWER - decreased.
Removing leaf litter and other natural sources of nitrogen can - CORRECT ANSWER -
disrupt nutrient cycling in the soil.
The most limiting factor in fertilizer uptake is - CORRECT ANSWER - Water availability.
A 60 pound bag of 10-6-4 fertilizer contains how many pounds of actual nitrogen? - CORRECT
ANSWER -6
A complete fertilizer contains - CORRECT ANSWER - nitrogen, phosphorus, and
potassium.
In the drill-hole fertilizer application method, the holes should extend from near the trunk to near
the - CORRECT ANSWER - drip line.
