Lift / Escalator / Stair

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Lift / Escalator / Stair

The way to transport anything from a floor to another floor in a building are Staircase, Lift and Escalator. While satire case is simple structure,But lift and escalators are mechanical electrical and electronic equipment. 

Lift/Elevator

An elevator (or lift )is a type of vertical transport equipment that efficiently moves people or goods between floors (levels, decks)of a building, vessel or other structure. Elevators are generally powered by electric motors  that either drive traction cables or counterweight systems like a hoist, or pump hydraulic fluid to raise a cylindrical piston like a jack.. 
Lift/Elevator

Escalators

An escalator is a moving staircase – a conveyor transport device for carrying people between floors of a building. The device consists of a motor-driven chain of individual, linked steps that move up or down on tracks, allowing the step  treads to remain horizontal. 
Escalators

Stair case

Stairs is a construction designed to bridge a large vertical distance by dividing it into smaller vertical distances, called steps. Stairs may be straight, round, or may consist of two or more straight pieces connected at angles . Stairs are classified according to the material and design. 
Stair case Stair case

 

 

 

 

 

 

 

 

 

 

 

 

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