The performance of a single shock absorber lanyard depends on more than the strength of its webbing and hooks. Its internal energy absorber must release energy progressively when subjected to a fall arrest load. In many designs, this involves specially folded webbing secured with controlled stitching. When the load reaches the intended range, the stitching progressively tears or releases,...
Low Stretch Kernmantel Ropes are one of those products that sound simple on a spec sheet but cause real headaches once a shipment arrives and doesn't behave the way a buyer expected. A supplier quote that just says "kernmantle rope" leaves out the one detail that matters most to rescue teams, riggers, and crews working at height: whether the rope stretches under load. Understanding how this...
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