London's high-rise architecture has a culinary bent of late. First there was the “Gherkin” by architect Norman Foster; now there is the “Cheese Grater” by Rogers Stirk Harbour and Partners, London. The city's next major high-rise, mothballed for three years during the foundation stage but about to spring to life, got its nickname thanks to its silvery leaning south facade. Passersby likely will find the profile of 122 Leadenhall Street to be the building's most striking feature. But project engineers are more intrigued by the node connections within the structure's expressed structural-steel megaframe. Photo: Courtesy Of British Land The 224-m-tall
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.