What is the purpose of door sills in elevators?

The purpose of door sills in elevators centers around functionality and safety rather than aesthetics or structural support. Specifically, door sills are designed to provide a smooth transition between the elevator car and the landing, ensuring that passengers can enter and exit safely. They also play a crucial role in preventing debris, water, or other materials from entering the elevator shaft, which can lead to operational issues or hazards. By minimizing the risk of these unwanted materials, door sills contribute to the overall safety and efficiency of the elevator system.

While door sills may somewhat contribute to the aesthetic appearance of an elevator, this is not their primary function. Additionally, they do not serve specifically as a fire barrier nor do they support the weight of the elevator doors, which are functions fulfilled by other components.