Ch. 9 Tree Support and Lightning Protection Flashcards
What is a steel cable constructed in which 7 strands are twisted together in a spiral pattern that is used to limit movement or add supplemental structural support to trees?
7-Strand,Common-grade Cable
What is the upper most part of a tree lightning protection system, located near the top of a tree or large leader, intended to provide a lightning strike termination or attachment point? It may be either a manufactured terminal or the end of the conductor
Air Terminal
What is a drop-forged nut used to fashion a through-hardware anchor?
Amon-eye Nut
What is the hardware installed to a fix and/or terminate a cable or a guy to a tree, the ground, or to another device?
Anchor Hardware
What is the radius of an object around which a line passes?
Bend Radius
In tree support systems, the metal fitting that can be affixed to ends of steel cable strands to terminate a cable installation is called what?
Cable Stop
What are metal wires, cables, and bus-bar that are used for carrying electrical current?
A Conductor
Any object, material, or medium capable of conducting electricity if energized, intentionally or unintentionally is called what?
A Conductor
What is a manufactured wire wrap designed to form a termination in the end of a 1×7 left-hand lay cable?
Dead-end Grips
In tree support systems. What type of 7-strand steel cable is often used to cable trees and is stronger but less flexible than common grade cable that must be terminated with dead-end tree grips or terminal fasteners called?
Extra-high-strength (EHS) Cable
What is a drop-forged, closed-eye bolt, used to anchor cables to a tree in a through-fastened system called?
Eye Bolt
In cabling, what is a closed termination loop that is handformed in common-grade cable by wrapping the successive strands back upon the standing part to attach the cable to anchor hardware called?
Eye Splice
What is a rope or cable splice that forms a closed eye or loop?
Eye Splice
What is the metal rod used in grounding a lightning protection system called?
Ground Rod
In a tree lightning protection system, a conductive plate or rod used to ground is called what?
Ground Terminal
What is the installation of a steel cable or synthetic rope cabling system and an external anchor to provide supplemental support called?
Guying
What is a lag-threaded, Drop-forged, closed-eye cable anchor used for dead end systems called?
Lag Eye
What is a lag-threaded, J-shaped cable anchor called?
Lag Hook (J-hook)
What is a cable anchor or bracing rod with a coarse thread pattern that is typically screwed into a predrilled hole that is smaller in diameter than the anchor or rod called?
Lag-threaded
What is a fine-thread pattern on hardware used with a nut and washer and installed through a predrilled hole that is larger in diameter than the hardware being installed called?
Machine-threaded
The installation of rigid structures between the ground and a branch or trunk to provide support is called what?
Propping
What is the cabling system that utilizes elastic materials for tree support systems?
Rope Support System
What is the type of drill bit with an open spiral form that is used to drill holes in trees for cable or bracing installation?
Ship Auger
What is the cabling system that utilizes steel cable to limit movement and provide support of branches called?
Steel Cable System
