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1. Name three instances in which cabling might be called for in a tree: a. b. c. Support a weak branch union Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions
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Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

Jul 05, 2020

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Page 1: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

1.  Name three instances in which cabling might be called for in a tree:

a. b. c.

Support a weak branch union Support for multi-stemmed trees Weak-wooded tree

Chapter 9 – Workbook Questions

Page 2: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

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

extra high strength

Chapter 9 – Workbook Questions

Page 3: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

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

aircraft cable

Chapter 9 – Workbook Questions

Page 4: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

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 hardware.

two - thirds

Chapter 9 – Workbook Questions

Page 5: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

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

Chapter 9 – Workbook Questions

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6. Dead-end hardware such as ________ or __________ can be used as anchors in smaller branches that are not decayed.

lag eyes lag hooks

Chapter 9 – Workbook Questions

Page 7: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

7. In decayed wood, or limbs greater than 8 inches in diameter, ____ _____ or _________ _____ with __________ ____ must be used to attach cables.

eye bolts threaded rods amon-eye nuts

Chapter 9 – Workbook Questions

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8. True / False – When more than one cable is installed on the same limb, the hardware should be spaced at least as far apart as the diameter of the limb.

Chapter 9 – Workbook Questions

Page 9: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

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

thimble

Chapter 9 – Workbook Questions

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10. EHS cable should be attached to hardware using _________ ______. dead-end grips

Chapter 9 – Workbook Questions

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11. True / False – The installation of metal cables, if done properly, will not wound the tree.

Chapter 9 – Workbook Questions

Page 12: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

12. The two types of rods commonly used to brace a tree are _________________ ____ and ____________ _____.

machine-threaded rods lag-threaded rods

Chapter 9 – Workbook Questions

Page 13: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

13. When bracing a tree with machine-threaded rod, the pre-drilled hole should be approximately 1/16 to 1/8 inch _________ than the diameter of the rod. larger

Chapter 9 – Workbook Questions

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14. ________ _______ _______ allows for more tree sway, enacting restraints only when environmental conditions demand it.

Dynamic support systems

Chapter 9 – Workbook Questions

Protected White Mulberry, Cervia Italy Photo Credit: Natural Path Urban Forestry

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

Guying

Chapter 9 – Workbook Questions

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16. Rigid structures mounted or built on the ground to support a branch or trunk are called ______ . props

Chapter 9 – Workbook Questions

Cedar of Lebanon, Parco Masseri, Ferrara Italy Photo Credit: Natural Path Urban Forestry

Page 17: Chapter 9 – Workbook Questions - Healthy Treesillinoisarborist.org/.../Chapter-9-Tree-Support-and...Support for multi-stemmed trees Weak-wooded tree Chapter 9 – Workbook Questions

17. A phenomenon in which lightening travels down the stem for a distance and then leaves the trees, “jumping” to a more conductive tree, structure, person, or animal is called ____ _____. side flash

Chapter 9 – Workbook Questions

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18. The main conductor of a lightening protection system is a cable made of ______. copper

Chapter 9 – Workbook Questions

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19. If a tree has a crown radius smaller than ______ feet, only one conductor is required.

35

Chapter 9 – Workbook Questions

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20. Name three circumstances in which lightening protection for trees might be recommended:

a. b. c.

Historic trees Valuable trees Trees that people may seek refuge under

Chapter 9 – Workbook Questions

Swamp White Oak, City of Lake Forest, Illinois, USA Photo Credit: Natural Path Urban Forestry