reinforced-concrete sleepers

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

• Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… …   Wikipedia

• railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …   Universalium

• Track (rail transport) — Permanent way redirects here. For other uses, see Permanent way (disambiguation). Twin rail tracks in a wooded area …   Wikipedia

• Rail tracks — are used on railways (or railroads), which, together with railroad switches (or points), guide trains without the need for steering. Tracks consist of two parallel steel rails, which are laid upon sleepers (or cross ties) that are embedded in… …   Wikipedia

• TGV track construction — LGV construction is the process by which the land on which TGV trains are to run is prepared for their use, involving carving the trackbed and laying the track. It is similar to the building of standard railway lines, but there are differences.… …   Wikipedia

• Deep foundation — A deep foundation installation for a bridge in Napa, California, United States …   Wikipedia

• Housing in Japan — A public housing building provided by the government of Tokyo …   Wikipedia

• Monier, Joseph — ▪ French inventor born 1823, France died 1906, Paris       French gardener, one of the principal inventors of reinforced concrete.       Monier, a commercial gardener, experimented with iron wire reinforcement for his cement and concrete tubs and …   Universalium

• Karl Johanslussen — ( Lock of Charles John ) is a lock and a sluice, connecting and controlling the flood discharge between Riddarfjärden, the easternmost part of Lake Mälaren, and Saltsjön, the section of the Baltic Sea reaching into central Stockholm, Sweden. The… …   Wikipedia