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ISA Arborist Question and answers rated A+ 2023
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ISA Arborist's Certification ExamChapter 16 Climbing and Working in
Trees
3 strand - correct answer Three strands twisted together in a spiral pattern
12 strand - correct answer For arborists rope- a braided rope consisting of strands,
most are coreless; a tight braid that is not easily spliced. - used for rigging and climbing,
and a loose easily spliceable braid, commonly used for slings
7 Strand - correct answer Common grade, steel cable construction, Used to add
supplemental structural support to trees. Terminated by wrapping onto itself
16 strand - correct answer For arborists rope-, load bearing cover and a filler core that
is not significant in load carrying
24 strand - correct answer For arborist ropes, available in double-braid or kernmantle
construction
access line - correct answer Second climbing line in a tree in case it is needed to
reach a victim in an emergency.
and or a climbing line installed in a tree to gain access to, but not used to work in the
tree
arborist block - correct answer Heavy duty pulley with an integrated connection point,
a rotating sheave for the rope and extended cheek plates. Used in tree rigging
operations
ascender - correct answer Piece of gear that enables a climber to ascend a rope.
attached to the rope, it will grip in one direction(down) and slide in the other (up)
back cut - correct answer Cut made on a trunk or branch, opposite from and toward
the notch, face cut, or undercut, to compete felling or branch removal
balance - correct answer in rigging, a technique for lowering a limb without allowing
end to drop
bend - correct answer Type of a knot used to join two rope ends together
bend ratio - correct answer Ratio of the diameter of a branch, sheave, or other object
to the diameter of the rope that is wrapped around
, bight - correct answer Curve or arc in a rope between the working end and the
standing part
blake's hitch - correct answer Friction knot climbers use, sometimes in place of the
tautline hitch or prusik knot
block - correct answer 1.Heavy duty pulley used in rigging, designed for dynamic
loading. 2. casing enclosing one or more parallel pulleys
body thrust - correct answer method of ascending a tree using a climbing rope
bollard - correct answer post to tie off with to provide friction
butt-hitching - correct answer Lowering pieces when the rigging point is below the
work, traditionally without the use of a block
butt-tying - correct answer tying off a limb at the butt (larger) end of rigging
carabiner - correct answer Connecting device. Oblong metal ring used in climbing and
static rigging that is open and close spring loaded gate.
climbing hitch - correct answer Used to secure a tree climber to the climbing line,
which permits controlled ascent, descent, and work positioning
climbing line - correct answer rope that meets specs for use in tree climbing
climbing saddle - correct answer work positioning harness designed for climbing trees
clove hitch - correct answer Knot used to secure a rope to an object
cycles to failure - correct answer Number of times a rope or other piece of equip . can
be used with a given load before mechanical failure
design factor - correct answer factor by which the rated or minim. breaking strength of
a rope or piece of equipment is divided by in determining its working load limit.
drop cut - correct answer branch removing technique consisting of an undercut and
then a top cut, usually made a farther out on the branch, or with a chainsaw, directly
over the undercut
dynamic loading - correct answer Forces created by a moving load. Load that
changes with time and motion
figure 8 knot - correct answer Safety knot or stopper at the end of a line
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