Certification Arborist

Question 1

Which of the following devices is used to prevent excessive wear to a cable that is attached to anchoring hardware?

a. Cable aid
b. Lag hook
c. Ship auger
d. Thimble

Answer 1

D: A thimble is used to prevent excessive wear to a cable that is attached to anchoring hardware.the thimble can also be used to protect the termination loop of the cable,or, when it is used with rope , to increase the bend radius. A cable aid is a tool use to tighten lag screws,open steel thimbles, and wrap dead-end grips.A lag hook, otherwise known as a J-hook,is a lag threaded cable anchor that has an open eye. a ship auger is a type of drilling holes for bracing or cable installation.

Question 2

Which of the fallowing is not an adverse consequence of lion tailing?

a. Water sprouts
b. Sunburned bark
c. Barber chair
d. Weak branches

Answer 2

C: barber chair is not an adverse consequence of lion tailing.However, lion tailing may lead to water sprouts, sunburned bark, or weak branches. a water sprout is a shoot that grows epicormically from latent buds on trunk or branches. Sunburn is caused by heat damage on thin or juvenile bark that has been exposed to direct sun ray. When inner branches of trees are excessively pruned the upper side of branches can be newly exposed to sunlight causing sunburn. Lions tailing can also cause branches to develop with poor taper and make them more likely to fail from structural weakness.

Question 3

If  a branch is tip-tied,which section will fall away  from the cut?
A. Tip end
B. Butt end
C. Middle
D. It is impossible to predict.

Answer 3

B:if a branch is tip-tied,the butt end will fall away from the cut. Tip-tying is the technique of tying a line at the tip end of the limb that is to removed. The extent to which the branch will swing out is largely dependent on where the rigging point is positioned. Climbers should be careful when tip-tying to avoid the path through which the swinging limb is likely to fall.in some case, the arborist will tip-tie branch and have a ground person lift it off the cut with mechanical advantage so that it will not impact a target located below the climber.