pre-stressed concrete components

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• Railroad tie — While wooden ties dominate North American railways, concrete is widely used in other parts of the world. A railroad tie/railway tie (North America), or railway sleeper (Europe) is a rectangular item used to support the rails in railroad tracks.… …   Wikipedia

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• The Ziggurat — is a ten story, stepped pyramidal office building and adjacent 5 story concrete parking structure located in West Sacramento, California on the shore of the Sacramento River. The building was built by The Money Store in 1997 and is currently… …   Wikipedia