CTSP CTSP Tree Climbing and Rigging Safety 4

Question 1

When using a friction hitch to ascend a rope, which condition most significantly reduces its holding ability?

Accepted Answer

Wet or icy rope surface

Answer

Wet or icy rope surfaces reduce friction dramatically, causing friction hitches to slip and fail under load.

Question 2

A climber needs to redirect a rigging line through a natural crotch. What is the primary concern with this technique compared to using a block?

Accepted Answer

Natural crotches cannot support dynamic loads as predictably as a rated block

Answer

Natural crotches are unrated and may fail unexpectedly under dynamic loading, unlike certified rigging blocks with known working load limits.

Question 3

What does the term 'running bowline' refer to in arborist rigging?

Accepted Answer

A bowline tied around the standing part of the rope to form a sliding loop

Answer

A running bowline forms a noose-like loop that tightens under load, commonly used to capture brush or limbs during rigging.

Question 4

During a descent on a single rope, a climber notices the rope beginning to spin. The BEST immediate action is to:

Accepted Answer

Stop descent, allow the rope to detwist, then continue slowly

Answer

Stopping and allowing the rope to detwist prevents kinking and potential hitch failure; rushing or releasing the device creates additional hazard.

Question 5

Which factor is MOST important when selecting the size of a rigging ring (port-a-wrap ring or friction device ring)?

Accepted Answer

The ring's working load limit must exceed the expected load from the piece being lowered

Answer

The rigging ring's working load limit must be rated to handle the maximum expected load to prevent catastrophic failure during lowering operations.

CTSP - Certified Treecare Safety Professional Practice Test