What is the world oldest reinforced concrete building?
What is the world oldest reinforced concrete building? In 1853, François Coignet – a French industrialist – built a four-storey house in St. Denis, France. While Coignet had previously built unreinforced concrete houses – many of which are still standing today – the building at 72 rue Charles Michels was the world's first reinforced concrete structure.
How old is the oldest skyscraper in the world?
The Home Life Insurance Building has the distinction of being the first skyscraper. It was completed in 1885, and was the first building built whose entire weight was supported with an iron frame.
Is the Hoover Dam concrete still curing?
Scientists still don't 100% understand what's going on inside cement when it's setting. In chemistry labs this remains hotly-debated territory. Also intriguingly, it keeps on curing long after it's apparently set. The Hoover dam is still curing nearly a century after being built!