Courtesy of Moatti-Rivire The 324-m-tall Paris icon is getting a glass floor for its first-level platform, 57 m above grade. A new restaurant, conference center and "green" features are also in the mix. A $34-million project will replace facilities on the first level of Paris’ landmark Eiffel Tower, last upgraded in the 1980s. A glass floor measuring over 30 sq meters will fill the now open central section of the 5,240-sq-m platform, 57 m above grade. A new restaurant and conference space are also in the works, along with improved disabled access, various forms of renewable energy, stormwater harvesting and
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.