Abstract
ABSTRACT The nonurgent walking speed probability distribution in a dark, smoke-filled full-scale tunnel was investigated in this study for the clarification of the evacuation behavior for quantitative assessment of the tunnel fire safety. The walking speed data were evaluated for several smoke density levels defined as 0 (no smoke), I (0.01–0.5 m−1), II (0.5–1.0 m−1), and III (> 1.0 m−1), and were commonly found to follow the gamma, normal, or lognormal distribution. The relationship between the walking speed and the extinction coefficient (smoke density) was also surveyed based on the statistical analysis. The average walking speed gradually decreased as the extinction coefficient increased to 2 m−1.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
