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OLYMPIC GAMES / BEYOND THE PARK


TOWER BRIDGE A London icon is given an energy-efficient make-over and a range of new celebratory options


Among the many British icons and idiosyn- crasies packed into director Danny Boyle’s London 2012 opening ceremony was the im- age of the Olympic torch as it made its way up the River Thames to the Olympic Sta- dium. Strapped to the front of a speedboat (piloted, naturally, by David Beckham) the flame passed under Tower Bridge, one of a handful of London landmarks recognisable the world over.


As well a breaking into a blaze of fireworks, the bridge also demonstrated a new lighting scheme, created with the aid of official Olympic sponsors EDF and GE Lighting. Keying into London 2012’s commitment to sustainability, the entire exterior has been fitted with LED.


As the bridge is a listed monument, detailed planning was required to ensure the aes- thetics of the bridge were enhanced rather than altered. The design by Citelum aimed to replace the previous floodlighting with a series of fixtures that could precisely pick out the façade’s structural features. Though built in the 19th Century the bridge’s two towers were constructed with stone clad- ding to create a visual link with the nearby Tower of London. Window frames on all sides of this stonework are uplit with 4W LED projectors and Linear RGB fixtures


(30W and 55W).


The lower corners of the towers are lit by inground 200W RGB projectors placed 1.9m infront of the façade, the upper section by more Linear RGB fixtures. The lower and upper curtain walls on the east and west (river facing) sides are washed by 200W RGB projectors positioned on the roof of the small control lodges at the base of the towers.


The tower roof sections are lit by 90W, 6000K projectors with asymmetric shut- ter support. The crosses at the peak of the roofs are fitted with 6500K, 55W linear LED projectors.


More than 2km of GE Lighting’s Tetra Contour architectural LED lighting were installed on the stone and metal work of the bridge. Supplied in 2.44m lengths, it takes the form of a flexible LED light engine that can be moulded on site to fit the shape of architectural features. These, along with the other new lamps and fixtures installed, have helped deliver a 40% reduction in lighting use compared to the old system. Nicolaudie STICK controls the installation allowing it to produce celebratory schemes for special occasions, such as the Olympics and the Queen’s Jubilee.


The new LED lighting scheme allows Tower Bridge to be given temporary lighting effects for special events as well as reducing energy consumption by upto 40%.


PROJECT DETAILS


Tower Bridge, London, UK Client: Bridge House Estates Lighting Design: Citelum Sponsors: GE / EDF


LIGHTING SPECIFIED


2km GE Lighting Tetra Contour GE Lighting LED Projectors and Floodlights Nicolaudie STICK control


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