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Climbing and Rigging

This ArborPod™ series offers videos that can help an arborist identify parts of a line; select and use the appropriate knots; and learn about other equipment, resources, and techniques valuable in a variety of climbing and rigging scenarios. Click on the headphones above to subscribe to this series!

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If you have comments or a favorite topic in arboriculture that you would like to learn more about, please contact us at isa@isa-arbor.com.

NameReleasedDescriptionAudio FileCEU Quiz
Top Removal with Arborist Block part 2 April 22, 2016 Rip Tompkins finishes the job of topping a tree using an arborist’s block, paying particular attention to safe work positioning, and any lean in the piece being cut. Play

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Top Removal with an Arborists' Block part 1 March 25, 2016 Rip Tompkins demonstrates taking the top out of a tree using an arborist’s block rigged below the cut. In this first part he sets up the rigging paying particular attention to a safe descent of the large piece once it’s cut, and safety for the climber. Play

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Natural Crotch Top Removal February 26, 2016 Rip Tompkins goes old school and shows a safe an effective method for removing the top of a tree using natural crotch rigging. Play

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Natural-Crotch Rigging Tips January 22, 2016 Sometimes all you need is a rope, as long as you rig it properly. Ken Palmer walks us through two natural-crotch rigging scenarios where getting it right can mean the difference between success and potential failure. Play

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Forces in Top Removal December 25, 2015 Topping a tree can be one of the most dangerous jobs an arborist can do. Ken Palmer and Rip Tompkins walk you through the forces at play, and tips on mitigating those forces, when topping. The accompanying quiz includes the episodes Rigging Force Experiments parts 1 and 2, Dynamometer Drop Tests parts 1 and 2, Work Positioning When Topping, and Forces in Top Removal (A,T,Bp) Play

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Work Positioning When Topping November 27, 2015 Blocking out the stem once a tree has been limbed out puts the arborists in a precarious position, the climber needs to be close enough to safely make the cut, but runs the risk of the reaction forces from dropping a large piece of wood flipping the lanyard and climbing line off the end of the stem. Rip demonstrates techniques to secure yourself before making the cut, and how to set up your climbing line as an emergency life line. Play

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Dynamometer Drop Tests part 2 October 23, 2015 Ken and Rip intentionally create a worse case rigging scenario to test the forces ropes and equipment can be subjected to in the second part of the Dynamometer drop tests. Play

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Dynamometer Drop Tests part 1 September 25, 2015 Ken and Rip demonstrate the dramatic amount of force created when dropping large pieces into a rigging system. Using dynamometers to measure at both the anchor point and at the in tree rigging point. Play

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Rigging Force Experiements-part 2 August 28, 2015 Peter Donzelli explains the many variables that go into the amount of force a rigging system is subjected to on the job, and how understanding these variables can be used to determine the best way to reduce the force on a system. Play

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Rigging Force Experiments part 1 July 24, 2015 Ken Palmer and Pete Donzelli demonstrate, with dramatic results, the forces a rigging line can sustain when loaded with a large limb. Play

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Basic Blocking Techniques part 2 June 26, 2015 Rip Tompkins finishes safely removing a large piece of stem using an arborist’s block rigged directly below the cut. The available quiz covers the episodes: Speedline with redirect and ground anchor, knotless rigging, knotless rigging and speedline, and basic blocking parts 1 & 2 (A,T,Bp) Play

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Basic Blocking Techniques part 1 May 22, 2015 Piecing out a large stem with no rigging points above the work requires the proper use of ropes and blocks. Rip Tompkins walks you through part one of Basic Blocking Techniques. Play

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