Presented at the 2015 International Technical Rescue Symposium
Download materials here (opens a new window):
Over the past few years Tom has been testing system components with the intent of applying the results to making predictions about how entire systems should behave. This article is the first where full systems were tested to determine if they behaved as expected. Inline 3:1 haul systems (Z-rigs) were pulled to failure in two configurations, during a haul and during a rest, and their properties recorded. The results are really interesting, with the same system behaving differently depending on the rope used to construct it.