Escalators present considerable construction challenges at installation, as it is necessary to construct a massive void at each end - ironically, about the size of a bungalow - to accommodate all of the steps which move up or down the escalator each day. At the beginning of each working day, the void at the start of the escalator contains around 10,000 steps, which throughout the day are sent along the escalator tracks. When each step reaches the top (or bottom) they are stored in the void.
At the end of every working day, the escalator is run for a time in reverse, often at high speed, thus transferring the used steps back to their starting point, ready for another day’s operation.
At the end of every working day, the escalator is run for a time in reverse, often at high speed, thus transferring the used steps back to their starting point, ready for another day’s operation.