the purpose of the contract is to provide instrumentation services for certain parts of Notre-Dame Cathedral in Paris. They consist of monitoring and controlling the structural behaviour of the rebuilt or restored structures upon completion according to the progress of the schedule and according to the schedule that will be defined during the preparatory phase. The works instrumented and monitored under this contract are: - masonry works rebuilt or restored at the end of the reconstruction work (vault of the transept crossing, high vaults of the nave, choir and transept arms, walls-hutches of the spans concerned). - The reconstructed structural works, the spire and the large attic (nave, choir and transept arms)

the purpose of the contract is to provide instrumentation services for certain parts of Notre-Dame Cathedral in Paris. They consist of monitoring and controlling the structural behaviour of the rebuilt or restored structures upon completion according to the progress of the schedule and according to the schedule that will be defined during the preparatory phase. The works instrumented and monitored under this contract are:- the masonry works rebuilt or restored at the end of the reconstruction work (vault of the transept crossing, high vaults of the nave, choir and transept arms, huck walls of the spans concerned).- The reconstructed structural works, the spire and the large attic (nave, choir and transept arms)