AC-Ch. 16 Tree Climbing Flashcards Preview

ISA Arborist Certification > AC-Ch. 16 Tree Climbing > Flashcards

Flashcards in AC-Ch. 16 Tree Climbing Deck (43)
1

Climbing line installed in a tree to gain access to but not used to work in the tree

Access line

2

Heavy duty pulley with an integrated connection point, a rotating sheave for the rope and extended cheek plates. Used in tree rigging operations

Arborist block

3

Piece of gear that enables a climber to ascend a rope. Attached to the rope it will grip in one direction and slide in the other.

Ascender

4

In rigging a technique for lowering a limb without allowing either end to drop

Balance

5

Type of knot used to join two rope ends together

Bend

6

Ratio of the diameter of an object to the diameter of the rope that is wrapped around it

Bend ratio

7

Curve or arc in a rope between the working end and the standing part.

Bight

8

Heavy duty pulley used in rigging. Designed for dynamic loads

Block

9

Casing enclosing one or more pulleys

Block

10

Post on which wraps can be taken with a rope to tie it off or to provide friction for control

Bollard

11

Method of lowering pieces when the rigging point is below the work traditionally without the use of a block.

Butt hitching

12

Connecting device. Oblong metal ring used in climbing and static rigging that is opened and closed by a spring loaded gate.

Carabiner

13

Hitch used to secure a tree climber to the climbing line, which permits controlled ascents, descent and work positioning.

Climbing hitch

14

Rope that meets specifications for use in tree climbing

Climbing line

15

Work positioning harness designed for climbing trees.

Climbing saddle

16

Sharp devices strapped to a climber's lower legs to assist in climbing poles or trees being removed.

Climbing spurs

17

Factor by which the rated or minimum breaking strength of a rope or piece of equipment is divided by in determining its working load limit

Design factor

18

Rope construction consisting of a braided rope within a braided rope both of which carry part of the load

Double braid

19

Branch removal technique consisting of an undercut and then a top cut usually made farther out on the branch or with a chain saw directly over the undercut

Drop cut

20

Forces created by a moving load. Load that changes with time and motion.

Dynamic loading

21

Device used to take wraps in a load line to provide friction for controlled lowering or climbing

Friction device

22

Rope construction consisting of a braided rope with no core.

Hollow braid

23

Short rope equipped with carabiners, snaps and/or eye splices. Used for temporarily securing a climber in one place.

Lanyard

24

Rope used to lower a tree branch or segment that has been cut. Lowering line

Load line

25

Small, light duty pulley used in climbing operations. Often used as a knot tender

Micro pulley

26

Method of using ropes and hardware in tree pruning or removal, to control or direct the descent of cut material or to handle heavy loads.

Rigging

27

Rope usually the load line used in rigging operations

Rigging line

28

Placement in the tree or any other point through which the load line passes to control rigging operations

Rigging point

29

Length of rope, usually with at least one eye splice, used to secure equipment or tree sections in rigging operations.

Rope sling

30

Connecting device with a threaded closure mechanism. Used to secure equipment or tree sections in rigging operations.

Screw link

31

U-shaped fitting with a pin running through it. Clevis.

Shackle

32

Inner fitting within a block or pulley over which the rope runs.

Sheave

33

Dynamic, sudden force placed on a rope or rigging apparatus when a moving load or piece is stopped.

Shock-loading

34

Set of methods used to ascend on a single rope as opposed to the doubled rope commonly used in secured footlocking techniques or dynamic climbing systems.

Single rope technique

35

Connecting device used by tree climbers primarily for connecting the climbing line to the saddle.

Snap

36

Separate, short length of rope used to tie the friction hitch in a climbing system

Split-tail

37

Inactive part of a rope.

Standing part

38

Force at which a new piece of equipment or rope in testing fails in tension under a static load

Tensile strength

39

Tying a line on the tip end of a branch to be removed.

Tip-tied

40

End part of a rope used for rigging and climbing.

Working end

41

Tensile strength divided by design factor. Maximum load that should not be exceeded in a piece of equipment, rope or rope assembly when performing its normal working function

Working load limit

42

Lanyard used in climbing, often as a secondary means of attachment.

Work positioning lanyard

43

Second climbing line hung in a tree in case it is needed to reach a victim in an emergency

Access line