Rope
Conditioning New Rope
Before using a new rope, we recommend soaking the rope in clean water overnight. When the rope is manufactured the threads have a coating on them to make them flow through the production machines easily.
Knowledge
Product Focus
Arborist Harness – Product Focus
Arborist harnesses are designed to allow an arborist to safely move around and work in a tree. Because tree work involves a lot of three dimensional movement, it must allow an arborist to easily move around a tree while carrying equipment and still provide comfort to the user.
Product Focus
Anchor Plate – Product Focus
Anchor plates and o-rings allow a rope system to be better organized. Anchor plates have numerous attachment points to connect ropes, carabiners and other types of rigging hardware.
Rope Access
A Few Thoughts On Safety Recalls
DMM Wales has recently announced a recall for some products which integrate their compact swivel design. Why do recalls happen? In general, safety recalls occur when a product could potentially lead to a situation resulting in a substantial risk of injury. This could result from a problem in the initial design and construction of the product or it could be from a problem which develops over time while the product is in use.
Q&A
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 for you. How do I pick the right carabiner? The first step is to determine how the carabiner will be used. Will it be used for lifting equipment or people? How much weight should it be expected to hold? What type of conditions will it be used in? Is it a dirty environment? Is it close to salt water (ocean)? These
Q&A
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 answer them for you. How do I pick the right pulley? The first step is to determine how the pulley will be used. Will it be used for lifting equipment or people? Will the pulley add mechanical advantage or simply change the direction of pull? How heavy is the load? How high do you need to lift? What
Rope
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 after Austrian mountaineer, Karl Prusik. He first made the knot popular in a 1931 manual showing how it can be used to ascend rope. The Prusik Hitch is a very easy knot to tie. It is also very easy to inspect to see if it was tied correctly. Because of this, it is a very good knot for use by beginners.
Tree Climbing
Tree Climbing, Rigging and Aerial Rescue Course
Some pictures from our June 2022 Tree Climbing, Rigging, and Aerial Rescue course together with Endu Tree and held at our trianing center in Chiang Mai, Thailand. Topics included tree climbing equipment selection, equipment standards, proper use of equipment and inspection, tree climbing with SRS and MRS systems, knots, basic rigging, branch walking, electrical hazards for tree workers, and aerial rescue. For more information on our next course please Contact Us
Rope
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 access, and rigging textbooks commonly show various pulley configurations and label them by the corresponding mechanical advantage. It is common to see 3:1, 5:1, 9:1, 4:1 and other systems presented. The numbers shown are the ‘Ideal Mechanical Advantage’. They show what the mechanical advantage would be in a perfect system with no inefficiencies introduced by outside forces such as