The waterproofing to the roof of an underground car park had failed and remedial measures were being investigated. One option was to cover the car park with a roof of either glass or ETFE as an alternative to reinstating the waterproof membrane. The ETFE option was chosen because it had a less intrusive structural solution and was more cost effective.
The extremely light weight steel structure spans between two existing university buildings and is formed from a number of 3 dimensional cable assisted arches spanning approximately 21m.
The roof covering is ETFE clear foils spanning approximately 3.5m. The end walls are single vertical ETFE cushions connected to the arch and a cantilevered wall structure.
The client was so impressed with the quality of space provided that it now forms an integral part of the university.