isa certified arborists examination chapter 15 tre
isa certified arborists examination
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ISA Certified Arborists Examination
Chapter 15 Tree Work Safety
Aerial Rescue - correct answer Method of bringing an injured worker down from an
aerial lift device
ANSI Z133.1 - correct answer The US, industry-developed, national consensus
SAFETY standards of practice for tree care
Back cut - correct answer Cut made on a tree trunk or branch, opposite from and
toward the notch, face cut, or undercut, to complete felling or branch removal
Barber Chair - correct answer Dangerous condition created when a tree or branch
splits upward vertically from the back cut or slab
(CSA) Canadian Standards Association - correct answer Canadian non for profit
association made up of representatives from various industry, association, and
government groups providing standards Provides similar role as ANSI in the US
Command and response system - correct answer System of vocal communication
used in tree care operations
Conventional notch - correct answer 45 degree notch with a horizontal bottom cut.
Used in removing trees or branches. Also called common notch.
Direct contact - correct answer any part of the body touching an energized conductor
Drop Zone - correct answer Predetermined area where cut branches or wood sections
will be dropped or lowered from a tree
Felling wedge - correct answer Metal or plastic wedge inserted into the back cut to
help direct the path in which a tree or tree part falls.
Hinge - correct answer Strip of uncut wood fibers created between the face cut or
notch and the back cut that helps control direction in tree felling or limb removal.
Holding wood
Humboldt notch - correct answer Felling notch that is horizontal on top and angled on
the bottom. also called humboldt scarf or reverse scarf.
Kickback quadrant - correct answer Upper quadrant of the tip of a chain saw bar
Minimum approach distance - correct answer Closest distance that a tree worker , tool,
equipment, or tree part that is permitted near overhead electrical conductors
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