The development of tunnel boring machines is an industrial high-tech sector that also stimulates high quality and even groundbreaking new methods in the field of concrete formwork and tunnel lining....
Albert Einstein once asserted that you recognize a really good idea by the fact that it seems to be impossible to be realized from the very outset. This quote often characterizes the activities of...
More vulnerable road users require special protection on road traffic. However, no new basic set of draft regulations relating to age or particular groups is needed. This was revealed by a study...
Public commuter transportation represents the central element of the urban infrastructure. Incidents involving violence, damage to property and vandalism in buses and trains as well as at stops can...
The State of Qatar is pursuing an ambitious vision destined to provide the highest standards of living to the country by the year 2030. An important component for this is a modern transport...
Graffiti artists love to leave their supposed works of art all over the place on large areas, the fronts of buildings, bridges, underpasses as well as transport tunnels. Their graffiti are annoying...
Fire services often have to counter the view that they are incapable of doing anything at all when confronted with a tunnel fire. This expectation relates to extreme major fires, in the case of which...
2014 marks a key year for underground works in Qatar, with projects such as the Doha Metro, Sharq Crossing and IDRIS (Inner Doha Re-sewerage Implementation Strategy) entering critical stages. Click for further information.
The metro system, nearly entirely underground, involves the use of dozens of mixed ground EPB TBMs: the largest simultaneous construction by TBM that has ever taken place in the city. The compact...
Three significant factors diminish the bearing capacity of the structure and hamper stability in the event of a tunnel fire:
Explosion-like spalling caused by immense heat development and the...
