What makes an anchor point unreliable?

What makes an anchor point unreliable?

• A. A solid bedrock anchor
• B. Loose soil, unstable rock, ongoing movement, or a feature that cannot withstand line tension or use
• C. A fixed wooden stake
• D. A high elevation rock

Answer: (B)

Anchors must resist the pull of the line and stay fixed under load. When the substrate is loose or unstable—like loose soil, unstable or fractured rock, ongoing movement, or any feature that cannot withstand the line tension—the anchor can shift, deform, or fail. That is what makes it unreliable. A solid bedrock anchor, by contrast, offers strong bearing capacity and tends to remain stable under the forces encountered, so it’s reliable. A fixed wooden stake can be unreliable if it can rot, loosen, or be pulled out, especially in variable ground. A high elevation rock isn’t inherently unreliable, but if the rock is loose, fractured, or subject to movement, its reliability drops. The key idea is whether the anchor’s substrate can maintain its position and strength under load.

Anchors must resist the pull of the line and stay fixed under load. When the substrate is loose or unstable—like loose soil, unstable or fractured rock, ongoing movement, or any feature that cannot withstand the line tension—the anchor can shift, deform, or fail. That is what makes it unreliable.

A solid bedrock anchor, by contrast, offers strong bearing capacity and tends to remain stable under the forces encountered, so it’s reliable. A fixed wooden stake can be unreliable if it can rot, loosen, or be pulled out, especially in variable ground. A high elevation rock isn’t inherently unreliable, but if the rock is loose, fractured, or subject to movement, its reliability drops. The key idea is whether the anchor’s substrate can maintain its position and strength under load.