ISA Certified Arborist Chapter 9 (Tree Support and Lightning Protection) Questions with Complete Solutions

Name 3 instances in which cabling might be called for in a tree. - ANSWER-a) support a weak crotch b) support for multi stemmed trees c) support for weak wooded trees Common-grade cable is relatively malleable (bendable) and easy to work with. ________ - _________ - ________ cable is much stronger but less flexible than common-grade cables. - ANSWER-extra-high-strength One advantage of _______ _______ is that it is both strong and flexible. A potential drawback is the limitation of choices for attachment. - ANSWER-aircraft cable 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-two-thirds Limbs may be brought closer together while installing the cable, so that when released, the cable will be just _______. - ANSWER-taut Dead-end hardware such as _______ _______ or _______ _______ can be used as anchors in smaller branches that are not decayed. - ANSWER-lag eyes, lag hooks In decayed wood, or limbs greater than 8 inches (20 cm) in diameter, _______ _______ or _______ _______ with _______ - _______ _______ must be used to attach cables. - ANSWE