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Once complete, the whole arch was rotated into its final position using strand jacks. The arch supports the whole of the north roof and 60% of the south roof and is the longest single-span roof structure in the world and was fabricated in 21 metre long, 100 tonne sections, and then brought to site for assembly at ground level. With a diameter of 7.4 metres and a span of 315 metres, the fully welded arch is pitched at 112 degrees, weighs 1,700 tonnes, and includes 41 steel diaphragms. After the modelling and drawing, report and CNC production phases, which were all completed by Oakwood Engineering, Tekla Structures was used as an analysis tool, examining the different stages of the project, utilising data imported from Excel, and then visually indicating the progress of different activities. The 3D coordinates were then distributed to other contractors for their setting out purposes. The main grid had approximately 2,500 intersection points accurately calculated to eight decimal places of a millimetre. These models were subsequently split into 160 phase models before being brought back into a single building information model (BIM) at the end of the project. During the design phase, the physical model for the project was split into four main categories being the Arch, Bowl, Parametric Perimeter Truss (PPT), and Roof. The foundations of the stadium are 35 metres deep.
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The construction of the stadium used 215,000 tonnes of concrete and approximately 23,000 tonnes of steel. Wembley Stadium is the world’s only stadium to include an aircraft warning beacon and encompasses additional sporting potential to host athletic track and field competitions, for which an elevated running track, supported by columns, can be installed above the pitch and over the first few rows of seats. The southern roof can be retracted to allow air and light onto the pitch and also to prevent shadows falling onto the viewing area, which improves the quality of the television broadcasts. The arch supports the world’s largest single span roof structure, removing the need for columns which would obscure the spectators’ view. In order to capture the atmosphere during the football and rugby games, the stadium has been designed with seats as close to the pitch as possible. The re-built Wembley Stadium is the tallest stadium in the world, and with a seating capacity of 90,000, it is also the second largest stadium in Europe and the world’s largest football (soccer) stadium with every seat under cover. The front façade still follows the profile of the original stadium with a Banqueting Hall and circulation spaces. The stadium has been designed to maximise spectator comfort, providing improved leg-room for all fans, better view of the action, wider seats, and a new concourse wrapping around the building that will allow easy circulation. The stadium’s geometry and its steeply raked seating tiers ensure that everyone has an unobstructed view to the pitch. As well as contributing to the aesthetics of the stadium, the arch is an integral part of the stadium’s roof support structure. During the rebuilding project, the famous twin towers of the original Wembley stadium were replaced with a spectacular 133 metre high arch, which towers over the 52 metre high stadium.
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Wembley Stadium is situated in the London Borough of Brent to the North West of central London. After the modelling and drawing, report and CNC production phases, Tekla Structures was used as an analysis tool, examining the different construction stages of the project, utilising data imported from Excel, and then visually indicating the progress of activities. One such project is the Wembley stadium, which – with a seating capacity of 90,000 – is now the largest football stadium in the world with every seat under cover. Many iconic projects have been completed globally adopting the Tekla Structures software.