Isa Arborist Study Guide: Chapter 16

Front 1

1. Cuts, excessive fraying

2. Discoloration

3. Puffs, pulled or herniated fibers

4. Abrasions

Back 1

List 4 defects that might be found during rope inspection that would require a rope to be retired.

Front 2

1. Broken limbs

2. Electrical hazards

3. Dead limbs

4. Decay

5. Splits

Back 2

Before climbing a tree, a climber should inspect the tree for hazards such as:

Front 3

Tensile strength

Back 3

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

Front 4

50000

Back 4

In the United States carabiners must have a tensile strength of _______pounds.

Front 5

True

Back 5

True/False: The load on any piece of climbing or rigging equipment can be many times higher than the weight of the climber.

Front 6

Working end and running end

Back 6

What are the ends of the rope referred to? (Also known as the ends in use and not in use)

Front 7

Hitch

Back 7

Type of knot used to secure rope to an object, another rope, or the standing part of the same rope.

Front 8

Bend

Back 8

Joins two ropes or end together

Front 9

Climbing hitch (friction hitch)

Back 9

Any of the many 'climbing knots' used by climbers, it is important to tree climbing.

Front 10

Climbing hitch (friction hitch)

Back 10

Allow the knot and climber to ascend or descend on a climbing rope or line and tie in

Front 11

Figure-8

Back 11

Knot often tied in the tail from the climbing hitch as a stopper knot to prevent the end from going through climbing hitch.

Front 12

Body thrust and secured footlock

Back 12

Two methods of using a climbing line to ascend a tree are _________ and ________.

Front 13

Prusik loops

Back 13

Loop of rope form a Prusik hitch for climbing or rigging

Front 14

Prusik hitch

Back 14

Type of multi-wrapped friction hitch used in climbing and rigging.

Front 15

True

Back 15

True/False: When foot locking, putting hands on or above the Prusik hitch could cause it to slide down the climbing line, creating a fall.

Front 16

Climbing spurs

Back 16

Because _____can damage a tree, they are approved for use only in trees to be removed, or for aerial rescue.

Front 17

Work-positioning lanyards

Back 17

For added stability and safety, a climber should be secured with a ___________ in addition to he climbing line when using a chain saw in a tree.

Front 18

False

Back 18

True/False: The most important factor in any aerial rescue situation is speed-getting the victim to the ground in the shorted amount of time possible.

Front 19

Rigging

Back 19

Use of ropes and other equipment to take down trees or remove limbs.

Front 20

Double braided

Back 20

What ropes are not recommended for natural-crotch rigging, where the friction of the cover with tree causes an imbalance in the load taken by the core and cover braids?

Front 21

Design factor

Back 21

The ______ of a rope is the tensile strength divided by the working-load limit. WLL

Front 22

Major axis

Back 22

Carabiners must always be loaded along their ______, and never across the gate.

Front 23

Arborist blocks

Back 23

Heavy duty pulleys, with a large, rotating sheave for the lowering line and a smaller sheave to accept a rope sling.

Front 24

Rescue pulley

Back 24

Designed for static, overhead rigging, where the loads are known and very low friction is required.

Front 25

Trie

Back 25

True/False: natural crotches can be fast and effective for use as a rigging point, but the consistent friction and versatility of placement of an arborist block is often a great advantage.

Front 26

Butt hitching

Back 26

Technique in which a piece is tied above the point where it will be cut, and the line is run through a block or crotch below the cut is called?butt

Front 27

Shock-loading

Back 27

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

Front 28

Drop cut

Back 28

Classic, three-point cut

Front 29

Hinge cut

Back 29

Variation of standard tree-felling techniques that employs the use of a notch and back cut to form a hinge and 'steer' the limb.

Front 30

Bollard

Back 30

Post that strap to the tree, for taking wraps with a load line.

Front 31

Scabbard

Back 31

Protective sheath for pruning saw or other tool

Front 32

Bight

Back 32

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

Front 33

Access line

Back 33

Second climbing line hung in a tree in case it is needed to reach victim in an emergency; climbing line installed in a tree to gain access to, but not used to work in the tree

Front 34

Rope sling

Back 34

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

Front 35

Split tail

Back 35

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