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Roof steelwork

Emirates stadium

To save vital time the roof construction method was changed so allow tubular steel trusses could be bolted together 'in the air' rather than being welded.

Primary trusses supporting the roof run north-south, while secondary trusses run east-west. All are connected back to a perimeter roof truss via tertiary trusses.

The two 204m long primary roof trusses were built side by side in two halves using the pitch area as an assembly yard. This took place while work was underway on the surrounding stadium bowl.

Originally the whole primary truss was to be assembled on the floor in one piece, but the ends would have encroached on parts of the construction area for the stadium bowl. This would have meant that some parts of the bowl would have had to be delayed until the trusses had been lifted.

Each primary half-truss was lifted by crawler cranes onto a temporary platform at one end and concrete core at the other.

Services were installed on the trusses prior to lifting, to save time.

To save vital time the roof construction method was changed so allow tubular steel trusses could be bolted together 'in the air' rather than being welded .

Primary trusses supporting the roof run north-south, while secondary trusses run east-west. All are connected back to a perimeter roof truss via tertiary trusses.

The two 204m long primary roof trusses were built side by side in two halves using the pitch area as an assembly yard. This took place while work was underway on the surrounding stadium bowl.

Originally the whole primary truss was to be assembled on the floor in one piece, but the ends would have encroached on parts of the construction area for the stadium bowl. This would have meant that some parts of the bowl would have had to be delayed until the trusses had been lifted .

Each primary half-truss was lifted by crawler cranes onto a temporary platform at one end and concrete core at the other.

Services were installed on the trusses prior to lifting, to save time.

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