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  2. Culvert - Wikipedia

    en.wikipedia.org/wiki/Culvert

    Corrugated metal culvert. In the coastal plains of Queensland, Australia, torrential rains during the wet season place a heavy demand on culverts. The natural slope of the flood plains is often very small, and little fall (or head loss) is permissible in the culverts. Researchers developed and patented the design procedure of minimum energy ...

  3. Underground hard-rock mining - Wikipedia

    en.wikipedia.org/wiki/Underground_hard-rock_mining

    There are two principal phases of underground mining: development mining and production mining. Development mining is composed of excavation almost entirely in (non-valuable) waste rock in order to gain access to the orebody. There are six steps in development mining: remove previously blasted material (muck out round), scaling (removing any unstable slabs of rock hanging from the roof and ...

  4. Caisson (engineering) - Wikipedia

    en.wikipedia.org/wiki/Caisson_(engineering)

    Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.

  5. Commercial Metals Company - Wikipedia

    en.wikipedia.org/wiki/Commercial_Metals_Company

    Commercial Metals Company (CMC), headquartered in Irving, Texas, is a producer of rebar and related products for the construction industry. Along with Nucor, it is one of two primary suppliers of steel used to reinforce concrete in buildings, bridges, roads, and infrastructure in the U.S.

  6. Cast iron pipe - Wikipedia

    en.wikipedia.org/wiki/Cast_iron_pipe

    Cast iron pipe formed using this procedure was typically oven-cooled under controlled time and temperature conditions. As with metal molds, pipe was typically annealed to eliminate any stresses in the pipe, and were then cleaned, inspected, tested, gauged (for dimensions), coated internally and/or externally, and stored for use. [5]

  7. M-26–Cedar Creek Culvert - Wikipedia

    en.wikipedia.org/wiki/M-26–Cedar_Creek_Culvert

    The M-26–Cedar Creek Culvert is a short highway bridge located on M-26 over Cedar Creek in Eagle Harbor Township, Michigan. The Keweenaw County Road Commission built the bridge in 1930; [ 2 ] they also built the M-26–Silver River Culvert [ 3 ] and the US 41–Fanny Hooe Creek Bridge [ 4 ] around the same time.