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Carabiner Questions And Answers

Carabiner Questions and Answers

Carabiners are a type of connector used in rope access, rope rescue, and arborist work to join two pieces of equipment together. They go by many names including snap links, biners, and karabiners. They are available in a large number of styles and materials with various types of closing mechanisms.We receive a lot of questions about carabiners and here are the answers to some of them. If you have additional questions please ask us in the space at the bottom of the page and we will answer them fo...

July 22, 2022
Q&A, Rope, Rope Access, Rope Rescue, Search And Rescue, Tree Climbing
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Pulley Questions And Answers

A pulley is a wheel which rotates on a shaft designed to reduce friction. They can either be used to change the direction of a rope or provide mechanical advantage to make it easier to move or lift an object. In rope systems, pulleys are primarily used to build mechanical advantage systems for raising operations.We receive a lot of questions about pulleys and here are the answers to some of them. If you have additional questions please ask us in the space at the bottom of the page and we will an...

July 15, 2022
Q&A, Rope, Rope Access, Rope Rescue, Search And Rescue, Tree Climbing
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Friction Hitches

A Hitch is a type of knot that is tied around an object and if the object is removed, the knot comes untied. Hitches are used for many purposes but one of the main uses is as a rope grab. This allows a rope to be attached to another rope in a way that allows the position to be easily adjusted. There are many different types of hitches but there are two that we use most commonly.https://www.youtube.com/watch?v=33g28gE9GuU Three Wrap Prusik Hitch Prusik Hitch. The Prusik Hitch is named af...

July 11, 2022
Rope, Rope Rescue, Tree Climbing
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Testing Pulley Efficiency

When using pulley systems, mechanical advantage is expressed as the ratio of the amount of output force to the amount of input force. For example, a '3:1' system has three times the amount of output force as the input force. If a person pulls with 10 units of force, this system will apply 30 units of force to the load. This allows a person to lift a load much greater than would be able to be lifted without the help of the system. This is the mechanical advantage. Rope rescue, rope acces...

December 31, 2021
Rope, Rope Access, Rope Rescue, Search And Rescue
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Do you trust your equipment quality?

Personal protective equipment used to be purchased directly from either the manufacturer or specialty stores but is now widely available on the Internet from unknown sources. There is a wide range of products available now but how do you know the quality of what you are buying? The products might look the same as well known name brand products but are they? There are a few major problems we have found with equipment available online with the most common being imitations of well known products ...

May 23, 2021
Rope, Rope Access, Rope Rescue, Tree Climbing
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RPM Systems. Are they still relevant?

We have previously written about some of the differences between rope rescue and rope access. Another major difference is rope rescue work is focused around team skills whereas rope access is mostly focused on individual skills. Rope rescue uses teams to raise and lower a rescuer and patient. An easy way to think about the difference is in rope rescue work the ropes are moving whereas in rope access work the ropes are stationary and the technician moves up and down the rope. The most comm...

August 5, 2020
Rope, Rope Rescue
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Rope Rescue or Rope Access? What is the Difference?

What is the difference between rope access and rope rescue? Is rope access training the same as rope rescue training or are they different? Rope Access is a form of work positioning which uses practical rope work to allow workers to access difficult to reach locations without the use of additional support structures. Rope Rescue is any rescue that requires rope and related equipment to safely gain access to, and remove patients from, hazardous locations with limited access such as mountains or...

July 2, 2020
Rope, Rope Access, Rope Rescue
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How Strong Is Your Equipment?

We often get asked about the strength of rope rescue and rope access equipment. When seeing a new piece of equipment the first question is often, "How strong is this?" This sounds like a simple question but the answer is more complicated. It is common to think all products are manufactured the exact same. In reality all manufactured products have variances. They are all a little different. These differences are managed through quality control. These differences can be made very small through bet...

June 24, 2020
Rope, Rope Access, Rope Rescue
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Testing Damage From A Rope Grab

Rope grabs are used in rope rescue and rope access in order to create an attachment point onto a rope without the need to tie a knot. Although there are many different styles, most use a cam which exerts pressure on the rope to hold the device in place. The cam comes in two main varieties with either a ribbed design or tooth design which uses small spikes. Cam face of the Climbing Technology Ascender Simple, ISC Wales Mini Rope Grab, Climbing Technology RollNLock, and Petzl Tibloc. Because the...

June 12, 2020
Rope, Rope Rescue
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Pulley Structure And Efficiency

A pulley is a wheel which rotates on a shaft which is supported by a frame. They can either be used to change the direction of a rope or provide mechanical advantage to make it easier to move or lift an object. In rope systems, pulleys are primarily used to build mechanical advantage systems for raising operations. The wheel of a pulley, called a sheave, is specially designed to accept a rope without damaging it. Most sheaves are made out of aluminum but stainless steel versions are also ava...

April 26, 2019
Rope
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