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  2. I-joist - Wikipedia

    en.wikipedia.org/wiki/I-joist

    An engineered wood joist, more commonly known as an I-joist, is a product designed to eliminate problems that occur with conventional wood joists. Invented in 1969, the I-joist is an engineered wood product that has great strength in relation to its size and weight. The biggest notable difference from dimensional lumber is that the I-joist ...

  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. The main function of an OWSJ is to provide direct support for roof or floor deck ...

  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. Flitch beam - Wikipedia

    en.wikipedia.org/wiki/Flitch_beam

    Engineered lumber can be cut to length and installed much like sawn lumber; the flitch requires shop fabrication and/or field bolting. This, coupled with a much increased self-weight of the beam (11.4 pounds (5.2 kg) for engineered wood vs. 25.2 pounds (11.4 kg) for a flitch beam), decreases the viability of the system.

  6. Joist - Wikipedia

    en.wikipedia.org/wiki/Joist

    Joist. A single floor or simple set of joists. If the joists land directly above the studs they are stacked. A joist is a horizontal structural member used in framing to span an open space, often between beams that subsequently transfer loads to vertical members. When incorporated into a floor framing system, joists serve to provide stiffness ...

  7. Waffle slab - Wikipedia

    en.wikipedia.org/wiki/Waffle_slab

    A waffle slab or two-way joist slab is a concrete slab made of reinforced concrete with concrete ribs running in two directions on its underside. [1] The name waffle comes from the grid pattern created by the reinforcing ribs. Waffle slabs are preferred for spans greater than 40 feet (12 m), as they are much stronger than flat slabs, flat slabs ...

  8. Lumber - Wikipedia

    en.wikipedia.org/wiki/Lumber

    C30, prefab roof trusses and where design requires somewhat stronger joists than C24 can offer. TR26 is also a common trussed rafter strength class in long standing use in the UK. TR26 is also a common trussed rafter strength class in long standing use in the UK.

  9. Span (engineering) - Wikipedia

    en.wikipedia.org/wiki/Span_(engineering)

    In engineering, span is the distance between two adjacent structural supports (e.g., two piers) of a structural member (e.g., a beam). Span is measured in the horizontal direction either between the faces of the supports (clear span) or between the centers of the bearing surfaces (effective span): [1] A span can be closed by a solid beam or by ...