Related Links: AECOM's $6B Offer for URS Keeps the Company Whole AECOM’s $6-billion acquisition of URS, creating the second largest construction services company, continues the trend of consolidation among construction services players. The 10 largest design and engineering firms have tripled in size since 2003—largely through mergers and acquisitions.The transaction creates a new global player with nearly $20 billion in revenue and nearly 100,000 employees across 150 countries.At the same time, this transaction highlights the challenges of pursuing profitable growth in the sector, given the struggles over the past few years at URS, itself the product of serial acquisitions. DANNIn 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.