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  2. Joist - Wikipedia

    en.wikipedia.org/wiki/Joist

    The joists forming the well are the heading joist (header) and trimming joist (trimmer). Trimmers take the name of the feature such as hearth trimmer, stair trimmer, etc. Shortened joists are said to be crippled. The term rim joist is rare before the 1940s in America; it forms the edge of a floor. The outermost joist in half timber construction ...

  3. Open web steel joist - Wikipedia

    en.wikipedia.org/wiki/Open_web_steel_joist

    Steel joists and Joist Girders being erected. 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.

  4. 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.

  5. Formwork - Wikipedia

    en.wikipedia.org/wiki/Formwork

    The joists are either made from timber, engineered lumber (often in the form of I-beams), aluminium or steel. The stringers are sometimes made of wood I-beams but usually from steel channels. These are fastened together (screwed, weld or bolted) to become a "deck". These decks are usually rectangular but can also be other shapes.

  6. I-beam - Wikipedia

    en.wikipedia.org/wiki/I-beam

    In Canada, steel I-beams are now commonly specified using the depth and weight of the beam in metric terms. For example, a "W250x33" beam is approximately 250 millimetres (9.8 in) in depth (height of the I-beam from the outer face of one flange to the outer face of the other flange) and weighs approximately 33 kg/m (22 lb/ft; 67 lb/yd). [ 8 ]

  7. Rim joist - Wikipedia

    en.wikipedia.org/wiki/Rim_joist

    A rim joist's relationship to the joists is similar to what the top or bottom wall plate is to the studs. It is also confusingly called a header (header also refers to other framing components) or rim board. Collectively, the end joists and rim joists are called band joists, especially in regard to deck construction.

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  9. Cross bracing - Wikipedia

    en.wikipedia.org/wiki/Cross_bracing

    Cross bracing between joists or rafters strengthens the members by preventing sideways deflection. This bracing is known by many names such as herringbone strutting, blocking, bridging, and dwanging. This bracing is known by many names such as herringbone strutting, blocking, bridging, and dwanging.