long-line prestressed concrete

См. также в других словарях:

• Prestressed concrete — diagram Prestressed concrete is a method for overcoming concrete s natural weakness in tension. It can be used to produce beams, floors or bridges with a longer span than is practical with ordinary reinforced concrete. Prestressing tendons… …   Wikipedia

• Concrete sleeper — A concrete sleeper is a railroad tie made out of steel reinforced concrete. Concrete sleepers …   Wikipedia

• Reinforced concrete — is concrete in which reinforcement bars ( rebars ), reinforcement grids, plates or fibers have been incorporated to strengthen the concrete in tension. It was invented by French gardener Joseph Monier in 1849 and patented in 1867.[1] The term… …   Wikipedia

• Protection 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… …   Wikipedia

• Eastern Suburbs & Illawarra railway line, Sydney — Public transport infrastructure in Sydney logo= name=Eastern Suburbs Illawarra Line transport mode=Commuter rail line line owner=CityRail operation area=Hurstville, Kogarah, Marrickville, Rockdale, Sutherland, Sydney map colour=Azure Blue… …   Wikipedia

• bridge — bridge1 bridgeable, adj. bridgeless, adj. bridgelike, adj. /brij/, n., v., bridged, bridging, adj. n. 1. a structure spanning and providing passage over a river, chasm, road, or the like. 2. a connecting, transitional, or intermediate route or… …   Universalium

• tunnels 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 …   Universalium

• Narrows Bridge (Perth) — The Narrows Bridge seen prior to the completion of the railway line The Narrows Bridge is a freeway crossing of the Swan River in Perth, Western Australia, at The Narrows between Mill Point and Mount Eliza. Made up of two road bridges and a… …   Wikipedia

• List of crossings of the River Severn — Motorway crossings over the River Severn Second Severn Crossing (M4 motorway) …   Wikipedia

• Earthquake engineering — is the study of the behavior of buildings and structures subject to seismic loading. It is a subset of both structural and civil engineering.The main objectives of earthquake engineering are: * Understand the interaction between buildings or… …   Wikipedia

• Construction of Assembly Hall (Champaign) — The construction of the Assembly Hall (Champaign) consisted of building a huge indoor arena with a 400 foot diameter (120 m) concrete dome whose center height is 125 feet (38 m) above the center floor which weighs 10 million pounds.[1]… …   Wikipedia