The winning design, which will be 276 metres above the ground, will not require permanent modification of the existing structure. It will double the capacity of the public viewing area on the tower's top floor.
The new platform will be bolted onto the tower using a web of Kevlar, an extremely strong and lightweight carbon fibre used in the construction of racing cars and body armour. The platform will use a cantilevered design similar to the way an aircraft's wings are attached to the fuselage.
It is also puncture vulnerable and subject to compressive failure, especially when bent. Any site here can tell you that.
Couple that with the French penchant for elan, for outrageous concepts which more than seldom fail in the initial stages and IMHO, there is here a recipe for disaster - plus it's ugly.
An example of French engineering was the hydrofoil and in particular, Hydroptere. In the photo to the left, this is how she should have sailed.
The photo lower right shows how she did sail.
Similarly, the French C Class Otip used a "flip-over" hard sail, designed to maximum efficiency.
The photo lower right shows the result.
So enjoy the new birds nest if you dare and I'll watch the result from the lower etage. And as if on cue, here is an advert for underpinning your French property.