AC-Ch. 9 Tree Support And Lightning Protection Flashcards
Uppermost point of a tree lightning protection system
Air terminal
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
Specialized nut used in cabling trees that have a large eye for attaching a cable to a threaded rod
Amon-eye nut
Hardware to which the cable termination is affixed in a cabling or guying installation.
Anchor hardware
Radius of an object around which the line passes.
Bend radius
Device used to tighten lags and aid in cable installation
Cable aid
Mechanical device that grasps and holds the cable during installation.
Cable grip
Metal knob that can be affixed to the ends of steel cable strands to terminate the cable installation.
Cable stop
Metal wires, cables, and bus bar used for caring electric current. Conductors may be solid or stranded.
Conductor
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
Any of several cabling system that utilize nonrigid materials for tree support systems.
Dynamic cable system
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)
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
Cable anchor with a closed eye usually machine threaded. Only drop forged ones are accepted in the United States
Eye bolt
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
Splice that forms a closed eye or loop
Eye splice
Metal rod used in grounding a tree lightning protection system
Ground rod
Either a ground rod or ground plate. Used in grounding a tree lightning protection system.
Ground terminal
Lag threaded cable anchor with a closed eye
Lag eye
Lag threaded cable anchor with an open eye
Lag hook/J hook
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
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
Act of bending, rounding, or flattening the end of through hardware for the purpose of preventing the nut from backing off.
Peen
Rigid brace, acting in compression to support a tree, tree branch or utility pole
Prop (propping)
Type of drill bit with an open spiral form. Used to drill holes in trees for cable or bracing installation
Ship auger
Phenomenon if a lightning strike leaving its current path and jumping to reach a better grounded conductor.
Side flash
Cabling system that utilizes rigid materials such as rods and steel cable to limit movement and provide constant support of limbs.
Static cable system
Significant difference in electrical potential which can lead to electrocution if contacted simultaneously
Step voltage
Metal rod used to support weak sections or crotches of a tree. Also called bracing rod.
Threaded rod
