Interstate 90 Connector Tunnel ceiling collapse

In the past accidents have been caused by cranes overturning due to overload or poor ground support. Cranes have collapsed when not properly assembled; loads have fallen (including counterweights) or swayed and impacted with people/buildings. This article highlights the different types of crane available (and the factors which determine their use), the process for introducing a crane onsite and the specific requirements when using tower cranes.

Sean Brady examines the remarkable engineering works that may have underpinned the Hanging Garden of Babylon - one of the Seven Wonders of the Ancient World.

Sean Brady stresses the importance of managing 'human factors' to reduce human error within bridge projects, citing international examples from which lessons can be learned.