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  2. Rail profile - Wikipedia

    en.wikipedia.org/wiki/Rail_profile

    The rail profile is the cross sectional shape of a railway rail, perpendicular to its length. Early rails were made of wood, cast iron or wrought iron. All modern rails are hot rolled steel with a cross section approximate to an I-beam, but asymmetric about a horizontal axis (however see grooved rail below). The head is profiled to resist wear ...

  3. Trex Company, Inc. - Wikipedia

    en.wikipedia.org/wiki/Trex_Company,_Inc.

    Trex Company, Inc. is a manufacturer of wood-alternative composite decking, railing, and other outdoor items made from recycled materials. [6] Headquartered in Winchester, Virginia, Trex is the world's largest manufacturer of wood-alternative decking and railing . [ 7 ]

  4. Handrail - Wikipedia

    en.wikipedia.org/wiki/Handrail

    Current versions of these codes and standards now agree that handrail is defined as either a circular cross section with an outside diameter of 1 + 1 ⁄ 4 inches (32 mm) minimum and 2 inches (51 mm) maximum or a non-circular cross section with a perimeter dimension of 4 inches (102 mm) minimum and 6 + 1 ⁄ 4 inches (159 mm) maximum and a ...

  5. Orthotropic deck - Wikipedia

    en.wikipedia.org/wiki/Orthotropic_deck

    From 1982 to 1986, the original bridge deck, in 747 sections, was replaced with lighter, stronger orthotropic steel deck panels over 401 nights without closing the roadway completely to traffic. [5] The project not only restored the bridge to prime condition but also reduced the deck weight by 12,300 tons (11,160 metric tons ).

  6. Structural steel - Wikipedia

    en.wikipedia.org/wiki/Structural_steel

    Angle (L-shaped cross-section) Structural channel, or {C-beam, or 'C' cross-section; Tee (T-shaped cross-section) Rail profile (asymmetrical Ɪ-beam) Railway rail; Vignoles rail; Flanged R rail; Grooved rail; Bar, a long piece with a rectangular cross section, but not so wide so as to be called a sheet. Rod, a round or square section long ...

  7. Rail fastening system - Wikipedia

    en.wikipedia.org/wiki/Rail_fastening_system

    Cross section of early T rail, chair and key. The earliest rail chairs, made of cast iron and introduced around 1800, were used to fix and support cast-iron rails at their ends; [2] they were also used to join adjacent rails. [35]

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