Photo by Tudor Van Hampton for ENR Tower cranes pose a major challenge on construction sites in emerging markets. Here, tower cranes work in the commercial district of Gurgaon, New Delhi. Related Links: Details Emerge on First Industry Standard for Lift Planning Were Dallas Crane Bolts Loosened Too Early? India’s economic boom, which has led to hectic construction of roads, bridges, metro rail and tall buildings, is also witnessing an increase in crane accidents. On average, two accidents involving lifting equipment occur daily in the country, reports The Times of India.The problem areas are in maintenance, inspection and operations. Companies
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.