The remaining permanent seats are sunk into the ground giving spectators a close view of the action. The 55,000 temporary seats on the upper bowl are supported on a scaffold-like structure that has led to criticism that the stadium will have a ‘makeshift’ or ‘Lego’-style appearance. The wrap will include 2.5m wide banners, twisted at 90° angles, highlighting the entrances to the stadium at the base of the structure. An open-weave fabric curtain wrapped around the stadium acts as an additional shelter. The roof stretches 28m round the stadium providing cover to majority of the spectators. The roof is supported by a steel frame with a zigzag pattern, which looks like an upside-down paper hat. The stadium design is a sunken bowl built into the ground with a cable-supported fabric membrane roof. "The stadium will be fitted with 80,000 seats, 55,000 of which will be dismantled after the London There will also be a training, science and medicine centre. The venue will become a community stadium for athletics, rugby and lower-league football, with a permanent athletics track. The stadium, which will be at the south of the Olympic Park and within walking distance of the Olympic village, will be fitted with 80,000 seats, 55,000 of which will be dismantled after the games, leaving a capacity of 25,000. Construction began in May 2008 and completed on 29th March 2011, on time and under budget at £486m. The final design for the stadium was unveiled in November 2007. The team includes construction firm Sir Robert McAlpine, sports architecture firm Populus (formerly known as HOK Sport+venue+event) headed by conceptual artist Peter Cook, UK-based services engineer Buro Happold, and consulting firm M-E Engineers – the same team that designed the Olympic stadium for the 2000 Sydney Games. In 13 October 2006, the London Organising Committee for the Olympic Games (LOCOG) announced that the Team McAlpine consortium would handle the design and construction for the new 80,000-seater stadium in Stratford. The Olympic Delivery Authority (ODA), which is overseeing the project, has allocated £496m for the Olympic Stadium project. The stadium will host the opening and closing ceremonies and the athletic events. It will be the prime stadium for the London 2012 Olympic and Paralympic Games. London’s Olympic Stadium is located at Marshgate Lane in Stratford in the city’s Lower Lea Valley.