Evaluating the physical demands on firefighters using track-type stair descent devices to evacuate mobility-limited occupants from high-rise buildings
Arm and back muscle forces differ across track-type stair descent devices (SDDs). Track type SDD's have egress speeds similar to pedestrian egress speeds. Smaller track-type chairs had faster egress and were perceived as easier to use. On the landings, the number of wheels affects shoulders and arm muscle use.
stair descent devices firefighter/ems evacuation of individuals with disabilities