Case Study 132 National Portrait Gallery Extension London 2000

Architects: Jeremy Dixon and Edward Jones

The re-ordering of the National Portrait Gallery has opened up the vertical circulation to provide a fine internal space. A simple timber stair takes the visitor up to mezzanine and first floor, with a long escalator taking the weary up to the second floor. Escalators do not require landings after 15 steps and the rise can be greater, therefore the space required is far less than an ordinary flight of stairs.

Figure l3-2 Stair and escalator, entrance hall
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