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  2. Open web steel joist - Wikipedia

    en.wikipedia.org/wiki/Open_web_steel_joist

    In structural engineering, the open web steel joist (OWSJ) is a lightweight steel truss consisting, in the standard form, of parallel chords and a triangulated web system, proportioned to span between bearing points. The main function of an OWSJ is to provide direct support for roof or floor deck and to transfer the load imposed on the deck to ...

  3. Steel frame - Wikipedia

    en.wikipedia.org/wiki/Steel_frame

    Steel frame. 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 floors, roof ...

  4. Torsion bar suspension - Wikipedia

    en.wikipedia.org/wiki/Torsion_bar_suspension

    Schematic of a front axle highlighted to show torsion bar. A torsion bar suspension, also known as a torsion spring suspension, is any vehicle suspension that uses a torsion bar as its main weight-bearing spring. One end of a long metal bar is attached firmly to the vehicle chassis; the opposite end terminates in a lever, the torsion key ...

  5. Moment-resisting frame - Wikipedia

    en.wikipedia.org/wiki/Moment-resisting_frame

    Moment-resisting frame is a rectilinear assemblage of beams and columns, with the beams rigidly connected to the columns. Resistance to lateral forces is provided primarily by rigid frame action – that is, by the development of bending moment and shear force in the frame members and joints. By virtue of the rigid beam–column connections, a ...

  6. Smith & Wesson Model 39 - Wikipedia

    en.wikipedia.org/wiki/Smith_&_Wesson_Model_39

    Smith & Wesson Model 39 of the Gendarmerie of Vaud, on display at Morges castle museum. The Smith & Wesson Model 39 is a semiautomatic pistol developed for the United States Army service pistol trials of 1954. [1] After the Army abandoned its search for a new pistol, the Model 39 went on the civilian market in 1955 and was the first of Smith ...

  7. Structural material - Wikipedia

    en.wikipedia.org/wiki/Structural_material

    A "cage" of reinforcing steel. Concrete is used extremely widely in building and civil engineering structures, due to its low cost, flexibility, durability, and high strength. It also has high resistance to fire. Concrete is a non-linear, non-elastic and brittle material. It is strong in compression and very weak in tension.

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