Evacuation Experiment Study in Up and Down Escape Staircase of Underground Road

Table 1

Comparison between experiment escape staircase and the Nanjing Weisan Road Tunnel’s.

Project	Stair width (m)	Stair angle	Stairs stepping (W × H)	Staircase formation
Test stairs	0.8	30°	170 mm × 280 mm	(10 + 10) steps + 2.0 m middle platform
Typical stairs	0.8	30°	151 mm × 267 mm	(9 + 17) steps + 1.2 m middle platform