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  2. Headwall - Wikipedia

    en.wikipedia.org/wiki/Headwall

    In civil engineering, a headwall is a small retaining wall placed at the inlet or outlet of a stormwater pipe or culvert. [2] In medicine, a headwall is the wall at the head end of a hospital bedspace. The bed abuts this headwall perpendicularly, which is furnished with equipment such as regulators for supplemental oxygen, regulators for ...

  3. Culvert - Wikipedia

    en.wikipedia.org/wiki/Culvert

    Steel corrugated culvert with a drop on the exhaust end, northern Vermont. Culverts can be constructed of a variety of materials including cast-in-place or precast concrete (reinforced or non-reinforced), galvanized steel, aluminum, or plastic (typically high-density polyethylene). Two or more materials may be combined to form composite ...

  4. Precast concrete - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete

    The overall thickness of sandwich wall panels in commercial applications is typically 8 inches, but their designs are often customized to the application. In a typical 8-inch wall panel the concrete wythes are each 2-3/8 inches thick), sandwiching 3-1/4 inches of high R-value insulating foam. The interior and exterior wythes of concrete are ...

  5. 10 Best Construction Materials Stocks To Buy Now - AOL

    www.aol.com/news/10-best-construction-materials...

    Forterra, Inc. (NYSE: FRTA) manufactures pipe and precast concrete products, provides portable precast bridges and drainage inlets, wing walls, headwalls, junction boxes, end parts of the pipe ...

  6. Lassen Volcanic National Park Highway Historic District

    en.wikipedia.org/wiki/Lassen_Volcanic_National...

    A route was selected and final design work took place in 1923. There was considerable internal debate concerning the extent of the road network, and the plan was scaled back to allow for more back country. Construction began in 1925 on two sections in the southwest and northwest, intended to create a road on the eastern slopes of Lassen Peak ...

  7. Landscape architecture - Wikipedia

    en.wikipedia.org/wiki/Landscape_architecture

    Stourhead in Wiltshire, England, designed by Henry Hoare (1705–1785), "the first landscape gardener, who showed in a single work, genius of the highest order" [1]. Landscape architecture is the design of outdoor areas, landmarks, and structures to achieve environmental, social-behavioural, or aesthetic outcomes. [2]

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