GEOLOGY

Detailed explanation-1: -During an earthquake, using elevator instead of staircase may become a deathtrap for you. An elevator runs using electricity power. During an earthquake, power may fall down and you can get stuck helplessly or the elevator’s rails may buckle or get entangled, or the emergency brake may get obstructed.

Detailed explanation-2: -Always use the stairs. If you’re outside in an earthquake, stay outside. Move away from buildings, trees, streetlights and overhead lines. Crouch down and cover your head.

Detailed explanation-3: -In unusual circumstances, an elevator malfunction might cause the elevator to travel to the fire floor, thus exposing the occupants to the fire. Also, smoke may enter the elevator shaft, which would migrate toward the roof, exposing any elevator occupants to that smoke.

Detailed explanation-4: -During an earthquake, the power supplies are cut off and you may get stuck in the elevator for a long time. Also, if the intensity of the earthquake is very high, there is a chance of lift car falling to the bottom causing you severe damage, but this is very rare.

Detailed explanation-5: -Results show that the elevator-stair combination of evacuation is more effective than using elevators or stairs alone. Increasing the number and speed of elevators can reduce evacuation time.