Tensioned Anchor Systems

Tensioned anchor systems allow you to apply force across anchor points before the main system goes under load. This technique may seem advanced at first, but once understood, it becomes an essential skill. It strengthens your systems and expands your rigging options in the field.

One of the most common examples is the pre-tensioned back-tie anchor. It adds strength, reduces movement, and stabilizes geometry. It also reinforces marginal anchor placements until they perform like bombproof systems.

What Is Pre-Tensioning?

Pre-tensioning involves applying controlled force between anchor points using a mechanical advantage system. Although this system is not part of the mainline or haul, it supports and strengthens the entire structure.

Once tension is applied, the rope is secured using hitches, knots, or anchors. The mechanical system is then removed or isolated. This creates a stable and locked load path.

Back-Tie Anchors

Back-tie anchors are frequently used when:

• An anchor needs extra reinforcement

• The load may shift during movement

• Geometry must stay fixed under tension

• A floating focal point requires positional control

When set correctly, pre-tensioned back-ties prevent sag, minimize extension, and add critical redundancy to your system.

Front-Tie and Opposition Anchors

Not all movement comes from behind. Front-tie anchors oppose forward motion. You will often see these used in:

• Artificial high directionals (AHDs)

• Belay anchor stabilization

• Systems using floating pulleys or elevated gear

Tensioning from the front keeps these components in position. Without this support, gear can drift, tilt, or collapse under uneven force.

Other Examples of Pre-Tensioning

• Guy lines: Used to stabilize tripods or AHDs

• Floating focal anchors: Tensioned manually or with a prusik system

• Directional lines: Pulled taut to control movement over edges or around obstacles

Each setup helps hold system geometry. More importantly, it does so before live load is applied.

Why Tensioned Anchors Matter

Tensioned anchors:

• Strengthen marginal anchor points

• Prevent unwanted slack and movement

• Maintain proper alignment

• Reduce system settling under load

• Improve the overall predictability of your rigging setup

They aren’t just helpful. In many cases, they’re essential.

Final Thought

When you pre-tension anchor systems, you take control before the system is under stress. This extra step may seem small, but the result is a cleaner, stronger, and more resilient structure.

Whether you’re reinforcing a suspect anchor or stabilizing a directional A-frame, tensioned anchors give you a professional-grade foundation every time.

Peace on your Days

Lance