concrete lining
1Protection of exposed concrete — is necessary to prolong its service life. A 120 year design life for concrete infrastructure has become increasingly common. Without early preventive maintenance this design life target may be optimistic. The design service life of reinforced… …
2tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
3New Austrian Tunnelling method — NATM redirects here. For other uses, see NATM (disambiguation). The New Austrian Tunnelling method (NATM) was developed between 1957 and 1965 in Austria. It was given its name in Salzburg in 1962 to distinguish it from old Austrian tunnelling… …
4Architecture and Civil Engineering — ▪ 2009 Introduction Architecture For Notable Civil Engineering Projects in work or completed in 2008, see Table (Notable Civil Engineering Projects (in work or completed, 2008)). Beijing was the centre of the world of architecture… …
5Hoover Dam — Infobox Dam dam name= Hoover Dam caption= Hoover Dam from the air official name= Hoover Dam crosses= Colorado River reservoir= Lake Mead locale=Nevada Arizona USA maint= U.S. Bureau of Reclamation length= 1244 ft (379 m) height= 726.4 ft (221 m)… …
62008 Channel Tunnel fire — Location of the 2008 Channel Tunnel fire The 2008 Channel Tunnel fire occurred on 11 September 2008 in the Channel Tunnel. The incident involved a France bound Eurotunnel Shuttle train carrying heavy goods vehicles (HGVs) and their drivers. The… …
7Holland Tunnel fire — The Holland Tunnel fire occurred on the morning of Friday, May 13, 1949, in a hazardous materials truck passing through the Holland Tunnel under the Hudson River between New York and New Jersey.TimelineAt 8:30 a.m. a truck carrying eighty 55… …
8Fireproofing — Fireproof redirects here. For the album, see Fireproof (album). For the 2008 film, see Fireproof (2008 film). Fireproofing, a passive fire protection measure, refers to the act of making materials or structures more resistant to fire, or to those …
9Blue Ridge Parkway tunnels — consist of a total of 26 vehicle tunnels constructed along the convert|469|mi|km of the Blue Ridge Parkway. One, the Bluff Mountain Tunnel, [ [http://www.drivingtoday.com/ftp/2007 11 05/legendary virginia2.html Blue Ridge Parkway North] ] is in… …
10North Downs Tunnel — North portal, with Class 373 on Eurostar service heading to Paris …
