CHARLES DE Gaulle airport's landmark Terminal 2E roof is set to be completely demolished as the only way to guarantee the safety of passengers, it was reported this week.
Four people were killed and hundreds injured when a section of the roof collapsed in May last year (NCE 27 May 2004).
An investigation blamed a combination of punching shear failure and concrete creep (NCE 3 February) for the collapse.
Failure actually occurred in a non-standard section of the tunnel-like building where openings for footbridges resulted in complex stress distributions.
Main contractor GTM has argued that the main part of the roof could be checked and strengthened if necessary. But airport operator Aeroports de Paris has this week been reported as opting for full demolition.
Paris-based structural engineer Henry Bardsley said the plan appeared to be to remove the roof but retain the freestanding internal structure and services, the supporting columns and foundations.
This doesn't leave the designers of a replacement roof many options, ' Bardsley added.
A new roof is expected to cost at least £70M. Demolition of the existing roof is expected to begin next month.