Federal and contractor management failures are to blame for delays and cost overruns on a $300-million powerplant project in Afghanistan, says a new report by the U.S. Special Inspector General of Afghanistan Reconstruction. The 105-megawatt, dual-fuel Tarakhil Power Plant near Kabul was supposed to be finished by last April. It is now expected to be completed by March 31, a year late and about $40 million over budget. The Jan. 20 report blames the U. S. Agency for International Development and lead contractor Black & Veatch Corp., Overland Park, Kansas. It notes that, “under pressure of political urgency,” the original
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.