Related Links: After Engineer Declares Roof Sound, A Deadly Collapse 2010 Disciplinary Action Against M.R. Wright & Associates When it comes to inspecting old structures that may be damaged by water and salts, an engineer can rarely rely on visual inspection to provide enough information to justify a declaration that a building is structurally sound.But that is exactly what the engineer appears to have done twice in four years before a collapse at a two-story shopping mall and rooftop parking deck in Ontario. The second inspection was made two months prior to a June 23 failure that sent slabs crashing
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.