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  2. Bollard - Wikipedia

    en.wikipedia.org/wiki/Bollard

    An illuminated bollard has a recessed base light unit in the foundation to illuminate the traffic bollard from all angles. [15] The main components are housed below the road or pedestrian surface (typically a concrete surface) so that if a vehicle strikes the traffic bollard the parts below the surface are not damaged.

  3. List of covered bridges in Ohio - Wikipedia

    en.wikipedia.org/.../List_of_covered_bridges_in_Ohio

    This is a list of Ohio covered bridges. There are over 125 historic wooden covered bridges in the U.S. state of Ohio. Many are still in use. Ashtabula County has 19 covered bridges, [1]: 33 including a lattice truss bridge. Fairfield County has 18 covered bridges.

  4. Ingalls Building - Wikipedia

    en.wikipedia.org/wiki/Ingalls_Building

    Prior to 1902, the tallest reinforced concrete structure in the world was only six stories high. Since concrete possesses very low tensile (pulling) strength, many people from both the public and the engineering community believed that a concrete tower as tall as the plan for the Ingalls Building would collapse under wind loads or even its own weight.

  5. Concrete bridge - Wikipedia

    en.wikipedia.org/wiki/Concrete_bridge

    The US's longest unreinforced concrete span, is the 200 feet (61 m) arch of the, 1910, Rocky River Bridge in Cleveland, Ohio. [ 9 ] Early extant examples include:

  6. George Bartholomew (inventor) - Wikipedia

    en.wikipedia.org/wiki/George_Bartholomew_(inventor)

    George Bartholomew was an American inventor who is credited with the invention of concrete pavement. In 1886, Bartholomew moved to Bellefontaine, Ohio, after having learned about cement production. Bartholomew found a good source of limestone and clay in the area; from this, he hoped to create an artificial stone for paving.

  7. Precast concrete - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete

    A precast concrete walled house under construction An example of low-quality precast concrete with exposed dowels, connectors, indications of cracks, and malformations, even during its installation, Barangay Lantic, Carmona, Cavite, Philippines Interior view of the walls, supports, and roof of a precast commercial shop in Williston, North Dakota, US.

  8. Box girder bridge - Wikipedia

    en.wikipedia.org/wiki/Box_girder_bridge

    The box girder normally comprises prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The box is typically rectangular or trapezoidal in cross-section. Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport.

  9. Interurban Bridge - Wikipedia

    en.wikipedia.org/wiki/Interurban_Bridge

    The Interurban Bridge, also known as the Ohio Electric Railroad Bridge. is a historic interurban railway reinforced concrete multiple arch bridge built in 1908 to span the Maumee River joining Lucas and Wood counties near Waterville, Ohio. The span was once the world's largest earth-filled reinforced concrete bridge. [2]

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