Figure 2 | Scientific Reports

Figure 2

From: Research on escalators used as evacuation stairs under fire scenarios

Figure 2The alternative text for this image may have been generated using AI.

Diagram of each case of fire shutter. Notes: (a) represents the state of fire shutter corresponding to case 1; (b) represents the state of fire shutter corresponding to case 2; (c) represents the state of fire shutter corresponding to case 3; (d) represents the state of fire shutter corresponding to case 4.

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