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High-lines or Tyroleans have the greatest risk for rescuers and for subjects needing to be rescued. They require a long setup process and the ability to be on both sides of the canyon. We typically don't have the need to build such systems but it is a convenient way of ensuring all of our knot and ropes skills are up to snuff. In the pictures below you will see the Ojai SAR team building a Tyrolean system at a recent training on the Sespe Creek, off of Hwy 33 in Ventura County. We prefer to use the Single line rope technique to minimize the failure points and because of the reliability of a single rope system.

The lines are being placed across the Sespe Creek

Finishing the main anchor and preparing to tensioning the system.

Logan Foster and David Musgrove work on beginning tensioning the highline for the Tyrolean.

Jeff Muth safety checks the Tryolean before we apply bodies to the system.

The Tyrolean line is tensioned (white rope) and the other line is used to pull the rescuer back and forth.

This is a close up of the main anchor. You will see a wrap-2 pull-3 (yellow webbing) and a back-up rope to a separate fixed anchor.

 

Sylvia Robles begins her journey across to the other side of the canyon. At mid point we lowered her down into the canyon.

Sylvia’s weight appears to be spit between the safety prussic and the rail of the lowering system.

Hard to see but Sylvia is on here way either up or down and she is resting on the tensioned safety prussice

You will notice in the photos that we use prussics to hold the main line tight. The prussic add a level of safety, because of their ability to slip on the main line, should too much tension be applied to the system. The eight plate is used to remove the remaining tension. The Munter LRH is used to transfer the load from the prussics to the eight plate to dismantle the system.

You will notice we built the system with the capability to lower a rescuer at any point along the system. The rescuer is connected to a movable pulley configured as a 2:1. The rescuer is also "clipped" into the tail of the mechanical system on the way across so the rescuer cannot be dropped by accident or system failure of the raising or lowering system. During the lowering aspect there is a prussic the rescuer needs to monitor; on the way up the pulley self-minds the prussic .

 

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Site Last modified: July 1, 2008