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  2. Bridge - Wikipedia

    en.wikipedia.org/wiki/Bridge

    A bridge can be categorized by what it is designed to carry, such as trains, pedestrian or road traffic (road bridge), a pipeline (Pipe bridge) or waterway for water transport or barge traffic. An aqueduct is a bridge that carries water, resembling a viaduct, which is a bridge that connects points of equal height.

  3. Block design - Wikipedia

    en.wikipedia.org/wiki/Block_design

    A partially balanced incomplete block design with n associate classes (PBIBD(n)) is a block design based on a v-set X with b blocks each of size k and with each element appearing in r blocks, such that there is an association scheme with n classes defined on X where, if elements x and y are ith associates, 1 ≤ i ≤ n, then they are together ...

  4. Combinatorial design - Wikipedia

    en.wikipedia.org/wiki/Combinatorial_design

    A quasi-3 design is a symmetric design (SBIBD) in which each triple of blocks intersect in either x or y points, for fixed x and y called the triple intersection numbers (x < y). Any symmetric design with λ ≤ 2 is a quasi-3 design with x = 0 and y = 1.

  5. List of bridge types - Wikipedia

    en.wikipedia.org/wiki/List_of_bridge_types

    Cable-stayed bridge and Suspension bridge: 1,408 m (4,619 ft) Yavuz Sultan Selim Bridge, [2] Istanbul: Cantilever bridge: 549 m (Quebec bridge) 1042.6 m (Forth Bridge) Cantilever spar cable-stayed bridge: Clapper bridge: Covered bridge: Girder bridge: Continuous span girder bridge Integral bridge: Extradosed bridge: 1,920 m Arrah–Chhapra ...

  6. History of structural engineering - Wikipedia

    en.wikipedia.org/wiki/History_of_structural...

    This resulted in the revolutionary Salginatobel Bridge design. Wilhelm Ritter formulated the truss theory for the shear design of reinforced concrete beams in 1899, and Emil Mörsch improved this in 1902. He went on to demonstrate that treating concrete in compression as a linear-elastic material was a conservative approximation of its ...

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  8. Truss bridge - Wikipedia

    en.wikipedia.org/wiki/Truss_bridge

    A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units.The connected elements, typically straight, may be stressed from tension, compression, or sometimes both in response to dynamic loads.

  9. US Supreme Court rejects tobacco firms' appeal over graphic ...

    www.aol.com/news/us-supreme-court-sidesteps...

    But the New Orleans-based 5th U.S. Circuit Court of Appeals in March found that the disputed warnings were "factual and uncontroversial," thus satisfying the relevant legal standard under the ...