8

Litres per second of fresh air per person pumped into the bowl to manage the environment

9

Chiller units required to cool the air

10

Minutes (maximum) that the roof takes to close

10

Trusses holding up the roof

16

Metres – height of the roof above the court surface

30

Minutes – maximum time expected before play can start/continue after the roof is closed and the internal environment is controlled and stabilised

43

Miles per hour – wind speed up to which the roof can be deployed/retracted

77

Metres – the span of the moving roof trusses (width of football pitch = 68m)

70

Tonnes – weight of each of the 10 trusses without extra parts

100

Tonnes – weight of each of the 10 trusses with all extras – eg motors, locking arms

100

Percent of the roof’s fabric which is recyclable

214

MM per second – maximum speed of truss deployment

1,200

Extra seats installed in 2008

3,000

Tonnes – combined weight (both fixed and moving) of the roof

5,200

Square metres, area of retractable roof when fully deployed

7,500

Wimbledon umbrellas, needed to cover the same area as the retractable roof

15,000

Maximum spectator capacity

143,000

Litres per second – total amount of conditioned air that the air-management system supplies to the bowl

290million

Tennis balls – number that could fit in the Centre Court with the roof closed