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Sun 22 Sep 2019 12:19 PM

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Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place

During Expo 2020, Al Wasl dome will be the largest 360-degree projection surface in the world, providing an unparalleled experience for millions of visitors.

Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
The final piece of the Al Wasl dome has been lifted into place, representing a significant milestone in the construction of the centrepiece of the Expo 2020 Dubai site.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
HH Sheikh Ahmed Bin Saeed Al Maktoum, Chairman of the Expo Dubai 2020 Higher Committee, President, Dubai Civil Aviation Authority, Chairman, Dubai Airports, Chairman and Chief Executive, Emirates Airline and Group, surrounded by members of the Expo 2020 Dubai Higher Committee (from L-R): Khalifa Al Zaffin, Executive Chairman, Dubai Aviation City Corporation (DACC); Mohamed Alabbar, Chairman, Emaar Properties; Dawood Abdulrahman Al Hajiri, Director General of the Dubai Municipality; HE Sheikh Sultan Bin Tahnoon Al Nahyan, Member of the Abu Dhabi Executive Council; HE Reem Al Hashimy, UAE Minister of State for International Cooperation and Director General, Expo 2020 Dubai Bureau; Mattar Al Tayer, Chairman of the Board and Executive Director of the Roads and Transport Authority (RTA); Major General Abdullah Khalifa Al Marri, Commander-in-Chief of Dubai Police and Helal Saeed Almarri, Director General of Dubai’s Department of Tourism and Commerce Marketing (DTCM).
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
Reem Al Hashimy, UAE Minister of State for International Cooperation and Director General, Expo 2020 Dubai Bureau (4th L) and Ahmed Al Khatib, Chief Development and Delivery Officer, Expo 2020 Dubai (2nd L), stands for a photograph with Expo site workers.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
HE Reem Al Hashimy speaks with Expo site workers.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
HE Reem Al Hashimy was briefed on the construction progress of the Expo by Ahmed Al Khatib, Chief Development and Delivery Officer, Expo 2020 Dubai.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
Enclosing a space of 724,000 cubic metres and standing 67.5 metres tall – higher than the Leaning Tower of Pisa – the 130-metre-wide domed steel trellis encircles Al Wasl Plaza, a structure that will be the heart of the Expo 2020 site.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
During Expo 2020, Al Wasl dome will be the largest 360-degree projection surface in the world.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
Weighing 550 tonnes of moulded steel, Al Wasl dome’s 22.5-metre crown had to be precisely positioned on top of the vertical trellis, with a margin of error of only three millimetres.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
It was completed using a technique called strand-jacking. Including the structures and equipment required to lift the dome during this process, the total weight was 830 tonnes – equivalent to 600 saloon cars.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
Eighteen hydraulic jacks, aided by steel lifting ropes connected to 18 freestanding temporary columns, were used to slowly raise the curved steel crown.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
Working through the night, 800 engineers and construction technicians carefully monitored every millimetre of the process, using GPS indicators throughout to ensure perfect alignment.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
Al Wasl dome’s crowning was the culmination of 14 months of preparation, beginning when the final pieces of the dome’s steel trellising left Italy in June 2018.
Gallery: Expo 2020 Dubai's massive Al Wasl dome set into place
Al Wasl Plaza was designed by US-based architects Adrian Smith + Gordon Gill Architecture.