CATS - Certified Arborist Tree Service of Albuquerque Tree Climbing and Aerial Rescue Questions and Answers Flashcards

What is the minimum breaking strength required for a climbing line used in tree work per ANSI Z133?

Answer: 5,400 pounds (24 kN) minimum breaking strength

ANSI Z133 sets 5,400 lbs (24 kN) as the minimum breaking strength for climbing lines to provide an adequate safety factor under dynamic loads.

What is the function of an arborist saddle (harness) during tree climbing?

Answer: To distribute climbing forces across the body and provide secure attachment points

A properly fitted saddle spreads the load across the hips and thighs, preventing injury and providing D-rings for attaching the climbing system.

Before ascending a tree, an arborist should inspect the climbing line for what condition?

Answer: Cuts, abrasions, chemical contamination, or excessive wear

Damage such as core cuts, sheath abrasion, or chemical contamination can reduce rope strength far below its rated value.

What is a 'tie-in point' (TIP) in tree climbing terminology?

Answer: The anchor point in the tree canopy where the climbing rope is attached

A secure, live TIP above the climber provides the upward support needed for the stationary rope or moving rope technique.

Which PPE items are mandatory for all arborists performing aerial tree work per ANSI Z133?

Answer: Helmet, eye protection, and climbing harness at minimum

ANSI Z133 requires head, eye, and body protection as baseline PPE for aerial work because hazards include falling debris, chips, and fall arrest.

What must an arborist do before installing a climbing line in any tree in Albuquerque?

Answer: Perform a visual and advanced assessment of the tree for structural defects and hazards

An undetected structural defect such as decay, cracks, or weak branch unions can cause catastrophic failure under a climber's load.