![]() Schad, R., “Analysis of Climbing Accidents,” Accident Analysis and Prevention 32(3): 391–396 (2000). “Career Lieutenant and Career Fire Fighter Die and Four Career Fire Fighters are Seriously Injured during a Three Alarm Apartment Fire-New York” (2006). NIOSH Firefighter Fatality Investigation and Prevention Program. Finally, using the experimentally determined rope properties measured with the new extensometer, positive agreement was found between the experimental drop tests and numerical simulations. While the ropes constructed from all aramid fibers were the strongest in standard quasistatic tests during dynamic loading they generated the largest maximum arrest loads that were consistently above the occupational health-safety recommended load of 8 kN. These loads are compared to occupational health-safety-based maximum load recommendations and the quasistatic strength of the rope. A series of experiments were conducted to replicate various deployment scenarios, quantifying the effect of fall height, payout length, and ledge geometry on the dynamic loads a firefighter and his/her equipment may expect in realistic escape scenarios utilizing common rope systems. A new extensometer, utilizing a linear variable differential transformer, was designed to advance the ability to characterize the dynamic and static properties of these ropes. Recently, the Fire Service has realized the importance of using fall protection systems while endeavoring to gain a better understanding of how these systems will respond during fire ground deployments. Rope systems are simple mechanical structures that provide life-critical protection from dynamic loading in a variety of applications where falls from height are possible.
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