Double - Block Rigging in Production Operations

摘要

Double-block rigging (DBR) is an advanced rigging technique that allows climbers and riggers to reduce force on the tree as well as on the equipment used. In the article "Arborist Techniques - DBR: Double-Block Rigging" by Gareth Tudor Jones (TCI, April 2015), Jones introduced and explored the topic. The in-field testing and research drop-test conducted to produce the data for that article and a subsequent TCI EXPO 2015 presentation on the subject were comprehensive. Tests and in-field studies clearly showed a significant advantage gained in force reduction through the critical points in the rigging system.