Benefitting from lax German laws on hostile corporate takeovers as well as a lack of government resistance to foreign acquisitions, Spanish construction firm Actividades de Construccion y Servicios SA edged closer to taking majority control of Hochtief AG, Germany's largest construction group, before Hochtief's May 12 shareholder meeting. Herbert Luetkestratkoetter, CEO since 2007, will resign, a step he announced on April 11. CFO Burkhard Lohr will leave in October. Frank Stieler, a former Siemens executive who runs Hochtief's European business, is backed by ACS and will be Hochtief's new CEO. div id="articleExtrasA" div id="articleExtrasB" div id="articleExtras" ACS Chairman Florentino Pérez
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.