Buildings which are having more than four storeys are provided with elevators or also called as lifts. The function of an elevator is to provide vertical transportation of passengers or freight. The elevators may be of two types, viz., electric traction elevators or hydraulic elevators.
For a low-rise freight service, hydraulic elevators are provided which can rise up to about six storeys. It is also used for low-rise passenger service. Electric traction elevators can be provided for all rise buildings and structures. According to building regulations, it is mandatory to provide lift or ramp in all public buildings.
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