Chapter 9 Tree support and lighting protection

Question 1

Name 3 instances in which cabling might be called for in a tree

Answer 1

Support a weak crotch
Support for a multi stemmed tree
Weak-wooded tree

Question 2

Common grade cable is relatively malleable and easy to work with. ______- ______ - _____ cable is much stronger but less flexible than common-grade cables.

Answer 2

Extra-high-strength

Question 3

One advantage of _______ ______ is that it’s both strong and flexible. A potential drawback is the limitation of choices for attachment.

Answer 3

Aircraft cable

Question 4

As a general rule, cables should be installed __________ - _______ the distance from the weak branch union to the top of the tree, as long as the wood is solid and large enough to install the hardware.

Answer 4

2/3

Question 5

Limbs may be brought closer together while installing the cable, so that when released, the cable will be just ______ .

Answer 5

Taut

Question 6

Dead end hardware such as _______ _______ or __________ _________ can be used as anchors in smaller branches that are not decayed.

Answer 6

Lag eyes, lag hooks

Question 7

In decayed wood, or limbs greater than 8 inches in diameter, _______ ______ or _______ ______ with ___________- _________ _________ must be used to attach cables. Used with anchor hardware.

Answer 7

Eye bolts, threaded rods, Amon-eye nuts

Question 8

T/f when more than 1 cable is installed on the same limb, the hardware should be spaced at least as far apart as the diameter of the limb.

Answer 8

True

Question 9

A ________ is used to form the eye at the end of a cable.

Answer 9

Thimble

Question 10

EHS cable should be attached to hardware using _______-_______ _________.

Answer 10

Dead end grips

Question 11

T/f the installation of metal cables, if done properly, will not wound the tree

Answer 11

False

Question 12

The 2 types of rods commonly used to brace a tree are _______-_______ ________ are ____ ____ ________

Answer 12

Machine threaded rods, lag threaded rods

Question 13

When bracing a tree with a machine threaded rod, the pre drilled hole should be approximately 1/16 to 1/8 in _______ than the diameter of the rod.

Answer 13

Larger

Question 14

_________ _______ ______ or synthetic fiber, allow for more tree sway, enacting restraint only when environmental conditions demand it.

Answer 14

Dynamic support systems

Question 15

_________ is the installation of a cable between a tree and an external anchor to provide supplemental support and reduce tree movement.

Answer 15

Guying

Question 16

Rigid structures mounted or built on the ground to support a branch or trunk are called ————-

Answer 16

Props

Question 17

A phenomenon in which lightning travels down the stem for a distance and then leaves the tree, jumping to a more conductive tree, structure, person or animal is called ______ _____

Answer 17

Side flash

Question 18

The main conductor of a lightning protection system is a cable made of

Answer 18

Copper

Question 19

If a tree has a crown radius smaller than ______ ft only one conductor is required.

Answer 19

35ft

Question 20

Name 3 circumstances in which lightning protection for trees might be recommended

Answer 20

Historic, Valuable trees and trees prone to strikes within golf courses, parks, etc

Question 21

2 types of steel cable used

Answer 21

7 strand common grade (flexible), Extra high strength (strong)

Question 22

Lag hooks should not be installed in decayed wood.

Answer 22

True

Question 23

Purpose of thimble

Answer 23

Protect the cable from abrasive wear and to increase cables bend radius.

Question 24

Come along

Answer 24

Brings 2 branches closer together

Question 25

The hardware should be installed in a direct line with the pull of the cable

Answer 25

True

Question 26

If more than 1 cable is installed, keep the hardware at least one branch diameters distance apart. Do not install the hardware in vertical alignment.

Answer 26

True

Question 27

If a tree is guyed to another tree, the guy should be attached _______ half. The guy on the supported tree should be attached ______ the midpoint. At about the height of the tree.

Answer 27

Lower, above, 2/3

Question 28

Peen

Answer 28

Bending, rounding or flattening the end of through-hardware to prevent the nut from backing off.