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subgrade construction

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  • Subgrade — In highway engineering, subgrade is the native material underneath a constructed pavement. It is also called formation level. Explanation Subgrades are commonly compacted before the construction of a pavement, and are sometimes stabilized by the… …   Wikipedia

  • Saskatchewan Highway 32 — Infobox road state=SK type=Hwy route=32 alternate name=Trans Canada Highway length km=140 length round=0 length ref=Fact|date=April 2008 established= direction a=North direction b=South terminus a=jct|state=SK|Hwy|21 in Leader terminus… …   Wikipedia

  • Road surface — A road in the process of being resurfaced Road surface (British English) or pavement (American English) is the durable surface material laid down on an area intended to sustain vehicular or foot traffic, such as a road or walkway. In the past… …   Wikipedia

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

  • History of road transport — The history of road transport started with the development of tracks by humans and their beasts of burden. Early roads The first forms of road transport were horses, oxen or even humans carrying goods over tracks that often followed game trails,… …   Wikipedia

  • road — roadless, adj. roadlessness, n. /rohd/, n. 1. a long, narrow stretch with a smoothed or paved surface, made for traveling by motor vehicle, carriage, etc., between two or more points; street or highway. 2. a way or course: the road to peace. 3. a …   Universalium

  • Geoprofessions — is a term coined by ASFE/The Geoprofessional Business Association to connote various technical disciplines that involve engineering, earth and environmental services applied to below ground (“subsurface”), ground surface, and ground surface… …   Wikipedia

  • Asphalt concrete — Asphalt concrete. As shown in this cross section, many older roadways are …   Wikipedia

  • California Pacific Railroad — Locale Vallejo Sacramento Napa Calistoga Davis Marysville Dates of operation 1865–1876 Successor Southern Pacific Railroad Track gauge 4 ft 8 1⁄2 in (1,435 mm) ( …   Wikipedia

  • 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

  • Runway — This article is about the aircraft take off and landing area. For other uses, see Runway (disambiguation). Landing strip redirects here. For the pubic hairstyle, see Bikini waxing. RWY redirects here. For the audio/video connectors, see RCA… …   Wikipedia

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