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  2. Open web steel joist - Wikipedia

    en.wikipedia.org/wiki/Open_web_steel_joist

    Architects, engineers and builders found it difficult to compare rated capacities and to use fully the economies of steel joist construction. Gable steel joists being erected. Members of the industry began to organize the institute, and in 1928 the first standard specifications were adopted, followed in 1929 by the first load table. The joists ...

  3. Ironworker - Wikipedia

    en.wikipedia.org/wiki/Ironworker

    Structural ironworkers also erect joist girders, bar joists, and trusses, and also install metal decking. When one bullpin is inadequate, the Ratliff Technique [citation needed] may be utilized in order to force a bullpin to align itself straight with a hole, by driving another bullpin or driftpin between a steel member, and the first bullpin.

  4. I-beam - Wikipedia

    en.wikipedia.org/wiki/I-beam

    Plate girder, formed by welding (or occasionally bolting or riveting) plates. I-beams are commonly made of structural steel but may also be formed from aluminium or other materials. A common type of I-beam is the rolled steel joist (RSJ), sometimes incorrectly rendered as reinforced steel joist.

  5. Category : Buildings and structures in Columbus, Ohio

    en.wikipedia.org/wiki/Category:Buildings_and...

    Buildings and structures in Columbus, Ohio by type (20 C) Buildings and structures in Downtown Columbus, Ohio (2 C, 125 P) C. Columbus Register properties (1 C, 100 P) D.

  6. Plate girder bridge - Wikipedia

    en.wikipedia.org/wiki/Plate_girder_bridge

    In some cases, the plate girders may be formed in a Z-shape rather than I-shape. The first tubular wrought iron plate girder bridge was built in 1846-47 by James Millholland for the Baltimore and Ohio Railroad. [2] Plate girder bridges are suitable for short to medium spans and may support railroads, highways, or other traffic. Plate girders ...

  7. Girder bridge - Wikipedia

    en.wikipedia.org/wiki/Girder_bridge

    A rolled steel girder is a girder that has been fabricated by rolling a blank cylinder of steel through a series of dies to create the desired shape. These create standardized I-beam and wide flange beam [7] shapes up to 100 feet in length. A plate girder is a girder that has been fabricated by welding plates together to create the desired ...

  8. Girder - Wikipedia

    en.wikipedia.org/wiki/Girder

    A girt is a vertically aligned girder placed to resist shear loads. Small steel girders are rolled into shape. Larger girders (1 m/3 feet deep or more) are made as plate girders, welded or bolted together from separate pieces of steel plate. [2] The Warren type girder replaces the solid web with an open latticework truss between the flanges ...

  9. Trimmer (construction) - Wikipedia

    en.wikipedia.org/wiki/Trimmer_(construction)

    In light-frame construction, a trimmer is a timber or metal beam (joist) used to create an opening around a stairwell, skylight, chimney, and the like. Trimmers are installed parallel to the primary floor or ceiling joists and support headers, which run perpendicular to the primary joists.