City of Manchester Stadium (now Etihad Stadium) conversion from athletics venue to soccer stadium.
The Commonwealth Games configuration had two tiers of seats
After conversion
CoMS had three tiers
Stadium conversion
Sections of the track were removed and relaid at other athletics venues, and the internal ground level was lowered to make way for
an additional tier of seating, on terracing already constructed then buried for the original configuration.
The two temporary stands with a total capacity of 16,000 were dismantled, and replaced with a permanent structure of similar design to the existing one at the southern end. This work took nearly a year to complete and added 23,000 permanent seats, increasing the capacity of the converted stadium by 7,000 to approximately 48,000.
The total cost of this conversion was in excess of £40 million, with the track, pitch and seating conversion being funded by the city council at a cost of £22 million; and the installation of bars, restaurants and corporate entertainment areas throughout the stadium being funded by the football club at a cost of £20 million.