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  2. Timber roof truss - Wikipedia

    en.wikipedia.org/wiki/Timber_roof_truss

    This is an example of a "double roof" with principal rafters and common rafters. A timber roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof. Trusses usually occur at regular intervals, linked by longitudinal timbers such as purlins. The space between each truss is known ...

  3. Fink truss - Wikipedia

    en.wikipedia.org/wiki/Fink_truss

    The first Fink Truss bridge was built by the Baltimore and Ohio Railroad in 1852 to span the Monongahela River at Fairmont, Virginia (now West Virginia). It consisted of three spans, each 205 feet long. It was the longest iron railroad bridge in the United States at the time. Several other Fink trusses held world records for their time ...

  4. Framing (construction) - Wikipedia

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

    The construction frames of a residential subdivision in Rogers, Minnesota in 2023. Framing, in construction, is the fitting together of pieces to give a structure support and shape. [1] Framing materials are usually wood, engineered wood, or structural steel. The alternative to framed construction is generally called mass wall construction ...

  5. Timber framing - Wikipedia

    en.wikipedia.org/wiki/Timber_framing

    Timber design or wood design is a subcategory of structural engineering that focuses on the engineering of wood structures. Timber is classified by tree species (e.g., southern pine, douglas fir, etc.) and its strength is graded using numerous coefficients that correspond to the number of knots, the moisture content, the temperature, the grain ...

  6. Hammerbeam roof - Wikipedia

    en.wikipedia.org/wiki/Hammerbeam_roof

    A hammer-beam is a form of timber roof truss, allowing a hammerbeam roof to span greater than the length of any individual piece of timber.In place of a normal tie beam spanning the entire width of the roof, short beams – the hammer beams – are supported by curved braces from the wall, and hammer posts or arch-braces are built on top to support the rafters and typically a collar beam.

  7. 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 ...

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