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  2. Metal gate - Wikipedia

    en.wikipedia.org/wiki/Metal_gate

    A metal gate, in the context of a lateral metal–oxide–semiconductor (MOS) stack, is the gate electrode separated by an oxide from the transistor's channel – the gate material is made from a metal. In most MOS transistors since about the mid-1970s, the "M" for metal has been replaced by polysilicon, but the name remained.

  3. Portal (architecture) - Wikipedia

    en.wikipedia.org/wiki/Portal_(architecture)

    A portal is an opening in a wall of a building, gate or fortification, especially a grand entrance to an important structure. [1] [page needed] Doors, metal gates, or portcullis in the opening can be used to control entry or exit. The surface surrounding the opening may be made of simple building materials or decorated with ornamentation.

  4. Diagrid - Wikipedia

    en.wikipedia.org/wiki/Diagrid

    A diagrid (a portmanteau of diagonal grid) is a framework of diagonally intersecting metal, concrete, or wooden beams that is used in the construction of buildings and roofs. [1] It requires less structural steel than a conventional steel frame. Hearst Tower in New York City, designed by Norman Foster, uses 21 percent less steel than a standard ...

  5. Portal frame - Wikipedia

    en.wikipedia.org/wiki/Portal_frame

    A portal frame steel building under construction. Portal frame is a construction technique where vertical supports are connected to horizontal beams or trusses via fixed joints with designed-in moment-resisting capacity. [1] The result is wide spans and open floors. Portal frame structures can be constructed using a variety of materials and ...

  6. Self-framing metal buildings - Wikipedia

    en.wikipedia.org/wiki/Self-Framing_Metal_Buildings

    Building length: 3 m (10' +/-) to 10 m (32' +/-) is common. Length is primarily limited by the ability of the load path to transfer loads to a vertical brace system (e.g. gable endwall). Building length can be extended with added discrete brace systems (e.g. roof level horizontal brace, portal frame, diagonal brace, interior partition shear wall).

  7. Steel frame - Wikipedia

    en.wikipedia.org/wiki/Steel_frame

    Steel frame structure Rectangular steel frame, or "perimeter frame" of the Willis building (at right) contrasted against the diagrid frame at 30 St Mary Axe (at center), in London. Steel frame is a building technique with a " skeleton frame" of vertical steel columns and horizontal I-beams , constructed in a rectangular grid to support the ...

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