AC-Ch. 9 Tree Support And Lightning Protection Flashcards Preview

ISA Arborist Certification > AC-Ch. 9 Tree Support And Lightning Protection > Flashcards

Flashcards in AC-Ch. 9 Tree Support And Lightning Protection Deck (29)
1

Uppermost point of a tree lightning protection system

Air terminal

2

Steel wire rope of various constructions designated by the number of strands in the rope and the number of wires in each strand commonly used in cabling in Australia and New Zealand

Aircraft cable

3

Specialized nut used in cabling trees that have a large eye for attaching a cable to a threaded rod

Amon-eye nut

4

Hardware to which the cable termination is affixed in a cabling or guying installation.

Anchor hardware

5

Radius of an object around which the line passes.

Bend radius

6

Device used to tighten lags and aid in cable installation

Cable aid

7

Mechanical device that grasps and holds the cable during installation.

Cable grip

8

Metal knob that can be affixed to the ends of steel cable strands to terminate the cable installation.

Cable stop

9

Metal wires, cables, and bus bar used for caring electric current. Conductors may be solid or stranded.

Conductor

10

Cable-termination devices that must be used to terminate extra-high-strength (EHS) tree support system cable to anchor hardware. May be used with common grade cable.

Dead-end grip

11

Any of several cabling system that utilize nonrigid materials for tree support systems.

Dynamic cable system

12

Type of seven-strand steel cable, often used to cable trees. Stronger but less flexible than common-grade cable must be terminated with dead-end tree grips.

Extra-high-strength cable (EHS)

13

Steel cable construction in which seven strands are twisted together in a spiral pattern. Used to add supplemental structural support to trees. Terminated by wrapping onto itself

7-strand common grade cable

14

Cable anchor with a closed eye usually machine threaded. Only drop forged ones are accepted in the United States

Eye bolt

15

In cabling a closed termination loop hand formed in common grade cable by wrapping the successive strands back upon the standing part to attach the cable to anchor hardware

Eye splice

16

Splice that forms a closed eye or loop

Eye splice

17

Metal rod used in grounding a tree lightning protection system

Ground rod

18

Either a ground rod or ground plate. Used in grounding a tree lightning protection system.

Ground terminal

19

Lag threaded cable anchor with a closed eye

Lag eye

20

Lag threaded cable anchor with an open eye

Lag hook/J hook

21

Bracing rod with a coarse thread pattern that is typically screwed into a pre-drilled hole that is smaller in diameter than the anchor or rod

Lag threaded rod

22

Bracing rod with a fine thread pattern that is used with a nut and washer and installed through a pre-drilled hole that is larger in diameter than the rod

Machine-threaded rod

23

Act of bending, rounding, or flattening the end of through hardware for the purpose of preventing the nut from backing off.

Peen

24

Rigid brace, acting in compression to support a tree, tree branch or utility pole

Prop (propping)

25

Type of drill bit with an open spiral form. Used to drill holes in trees for cable or bracing installation

Ship auger

26

Phenomenon if a lightning strike leaving its current path and jumping to reach a better grounded conductor.

Side flash

27

Cabling system that utilizes rigid materials such as rods and steel cable to limit movement and provide constant support of limbs.

Static cable system

28

Significant difference in electrical potential which can lead to electrocution if contacted simultaneously

Step voltage

29

Metal rod used to support weak sections or crotches of a tree. Also called bracing rod.

Threaded rod