The stairs are widespread throughout the world, where it is considered one of the most important means of movement between floors in our time, it works quietly and indirectly feels its users in safety and comfort, and this type of stairs is spread frequently in commercial complexes, shopping malls, airports and train stations … Others, of course, depend on the movement of people between floors vertically through a moving staircase running on the electric current and a speed regulator that controls the movement of the ladder at the required speed, and its ability to transport large numbers of people.