ESCALATORS  
In buildings such as shopping malls, sports facilities and special public buildings, the practical solution to create the link between a floor and another is an escalator which was created with the same characteristics similar to that of a traditional stairs, but has an electric function, that which facilitates the transport of persons.
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WALKWAYS  
Similar in shape and size is the Walkway which is dedicated to the transport of objects as well(see the shoppingcart in a shopping center).
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