Members of the construction community are a famously inventive lot. You don't get shut down by problems; you invent your way through them. From methods to materials, and tools to techniques, you innovate equipment, software and communications systems, and often do it by combining commercial, off-the-shelf (COTS) components in new and clever ways.Indeed, in 2011, the U.S. Patent and Trademark Office issued 1,360 patents in the field of static structures (e.g., buildings) alone, and many more in other fields related to construction and infrastructure. Another indication of the broad range of construction innovation is the listing of recipients of the
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.