4/10/2023 0 Comments London city hall structureAt the top of the ten-storey building is an exhibition and meeting space called "London's Living Room", with an open viewing deck which is occasionally open to the public. It has no front or back in conventional terms but derives its shape from a modified sphere.Ī 500-metre (1,640 ft) helical walkway, based on that used in the cupola of the Reichstag building in Berlin, ascends the full height of the building. Its designers reportedly saw the building as a giant sphere hanging over the Thames, but opted for a more conventionally rooted building instead. Boris Johnson has referred to it as "The Onion". It has been compared variously to Darth Vader's helmet, a misshapen egg, a woodlouse and a motorcycle helmet. Despite claiming the building "demonstrates the potential for a sustainable, virtually non-polluting public building", energy use measurements have shown this building to be fairly inefficient in terms of energy use (375 kWh/m 2/yr), with a 2012 Display Energy Performance Certificate rating of "E". The building has an unusual, bulbous shape, purportedly intended to reduce its surface area and thus improve energy efficiency, although the excess energy consumption caused by the exclusive use of glass (in a double facade) overwhelms the benefit of shape.
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