ISA Certified Arborist Chapter 15 (Tree Worker Safety) Examination

ISA Certified Arborist Chapter 15 (Tree
Worker Safety)

Always engage the ______ ______ before starting a chain saw. - ✔️

✔ Correct Answer chain brake


True/False - The chain brake must be engaged if the operator takes

one hand off the running saw or takes more than two steps. - ✔️✔

Correct Answer True


True/False - The chain saw engine must be stopped for refueling. - ✔

️✔ Correct Answer True


True/False - Kickback can occur when the upper tip of the chain saw

guide bar contacts an object. - ✔️✔ Correct Answer True


True/False - A well-trained climber, in good condition, should be able

to dodge the kickback of a chain saw. - ✔️✔ Correct

Answer False

, Name three types of notches used in tree felling. - ✔️✔ Correct

Answer open face


traditional (45 degrees)


Humboldt


Generally, the depth of the felling notch should not exceed ______ -

______ of the diameter of the tree. - ✔️✔ Correct Answer one-

third


The _______ is critical in controlling the direction of fall. - ✔️✔

Correct Answer hinge


Sometimes, if the tree is leaning in the direction of fall or has internal

faults, the tree can split upward from the back cut. This is called a

______ ______, and it can be very dangerous. - ✔️✔ Correct

Answer barber chair