Certified Arborist Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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Why are double-braid ropes not recommended for natural crotch rigging?

Because they are used to tie in for secured footlocking

Because they are a rope inside of a rope

Because they are a 3-point cut

Because the friction causes an imbalance in the load taken by the core and cover braids

The correct reason for why double-braid ropes are not recommended for natural crotch rigging is related to the way these ropes are constructed and how they behave under load.

Double-braid ropes consist of two layers: an inner core and an outer cover. When used in natural crotch rigging, the nature of the friction created at the rigging point can lead to an imbalance in the load distribution between the core and the cover. The outer cover can experience significant friction against the branch or natural anchor point, potentially leading to a situation where it bears more load than the core. This can compromise the rope's overall strength and safety, increasing the risk of failure.

Understanding this dynamic is crucial for safe rigging practices. Proper selection of rigging equipment that ensures balanced load sharing and minimizes wear due to friction is essential for tree work safety.

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