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  2. 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 ...

  3. 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 ...

  4. Ductile iron pipe - Wikipedia

    en.wikipedia.org/wiki/Ductile_iron_pipe

    The ductile iron used to manufacture the pipe is characterized by the spheroidal or nodular nature of the graphite within the iron. [2] Typically, the pipe is manufactured using centrifugal casting in metal or resin lined moulds. [3]

  5. List of roof shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_roof_shapes

    Arched roof, bow roof, [11] Gothic, Gothic arch, and ship's bottom roof. Historically also called a compass roof. [12] [13] Circular Bell roof (bell-shaped, ogee, Philibert de l'Orme roof): A bell-shaped roof. Compare with bell-cast eaves. Domed; Onion dome or rather an imperial roof; Bochka roof; Conical roof or cone roof; Hyperbolic Saddle

  6. Blue Comet - Wikipedia

    en.wikipedia.org/wiki/Blue_Comet

    The surface water had overwhelmed two 24-inch culverts and undermined the roadbed. The engine and tender made it across the damaged track, with the rear tender truck being derailed. The rear truck floating lever was damaged, rendering the tender brakes inoperative. The entire 5-car consist had become uncoupled from the tender and derailed. [8]

  7. Finial - Wikipedia

    en.wikipedia.org/wiki/Finial

    A finial (from Latin: finis, end) [1] or hip-knob is an element marking the top or end of some object, often formed to be a decorative feature. [ 2 ] In architecture, it is a small decorative device, employed to emphasize the apex of a dome , spire , tower , roof, or gable or any of various distinctive ornaments at the top, end, or corner of a ...