Besides the seating bowl there is an additional 300 000ft2
(27 800m2) of enclosed, fully conditioned space including
offices, restaurants, locker rooms, and storage, all served by
conventional air systems with distributed AHUs adjacent.
These have a 1600 ton (1460 tonnes) central cooling plant
and 33 000Mbh hot water heating plant which also gives
frost protection to the turf via buried pipes. This system is
only used before game time so the same boiler plant can be
used without increasing overall capacity. Both systems
contain 30% ethylene glycol to protect against freezing.
The concourse food services have local split system heat
pumps above each unit; a total of some 53 000ft3
(1500m3)/min of grease exhaust ascends to the roof.














