Design Aspects of The Extension
The physical design of the extension is radically different from anything previously attempted on the London Underground. Stations are characterised by cavernous, stark interiors lined with polished metal panels and moulded concrete walls and columns. Some of the stations are truly enormous; Canary Wharf has been compared to a cathedral, with it being said that the neighbouring One Canada Square, if laid on its side could fit in the station with room to spare. Similarly, Westminster has a dramatic vertical void nearly 40 m (130 ft) deep.
The size of the stations was a response to safety concerns—overcrowding and a lack of exits had been significant factors in the 1987 King's Cross disaster—as well as an attempt to "future-proof" stations by designing from the start for a high volume of use. One consequence of this is that most of the extension's platforms and halls are full only in a busy rush hour.
A number of leading architects were employed to design the stations, with the lead being given by Roland Paoletti. It was decided from the outset that although each station would be designed as an individual entity, they would be linked to the others by a common design philosophy and functional elements. Spaciousness was the most noticeable, along with the shared theme of grey and silver polished metal and concrete interiors. More subtly, many of the stations were designed to admit as much natural light as possible. At Bermondsey and to a lesser extent at Canada Water and Southwark, rotundas and shafts allow daylight to reach, or nearly reach, the platforms.
The platforms saw another innovation: platform edge doors, to improve airflow in stations. They also prevent passengers from jumping or falling onto the line.
Read more about this topic: Jubilee Line Extension
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