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  2. I-joist - Wikipedia

    en.wikipedia.org/wiki/I-joist

    Sizes vary according to the I-joist's intended load and span. Depths can range from 9 + 1 ⁄ 4 to 24 inches (230–610 mm) and reach up to 80 feet (24 m) in length, although 40 to 42 feet (12–13 m) is more common. The intended use for an I-joist is for floor and roof joists, wall studs, and roof rafters in both residential and commercial ...

  3. I-beam - Wikipedia

    en.wikipedia.org/wiki/I-beam

    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] I-beams are still available in US sizes from many Canadian manufacturers.

  4. Open web steel joist - Wikipedia

    en.wikipedia.org/wiki/Open_web_steel_joist

    There are 63 separate designations in the Load Tables, representing joist depths from 10 inches (250 mm) through 30 inches (760 mm) in 2 inches (51 mm) increments and spans through 60 feet (18,000 mm). Standard K-Series Joists have a 2 + 1 ⁄ 2 inches (64 mm) end bearing depth so that, regardless of the overall joist depths, the tops of the ...

  5. Joist - Wikipedia

    en.wikipedia.org/wiki/Joist

    There are approved formulas for calculating the depth required and reducing the depth as needed; however, a rule of thumb for calculating the depth of a wooden floor joist for a residential property is to take half the span in feet, add two, and use the resulting number as the depth in inches; for example, the joist depth required for a 14-foot ...

  6. TJI - Wikipedia

    en.wikipedia.org/wiki/TJI

    Tji may refer to: Northern Tujia language, Sino-Tibetan language of China (ISO 639-3 code: tji) Tji, a unit of weight equal to 3.8601 kg; see Indonesian units of measurement; TJI joist, a construction framing component (trademarked by Weyerhaeuser) for I-joist; People with the surname Tji include: Daniel Tji Hak Soun, South Korean Roman ...

  7. Waffle slab - Wikipedia

    en.wikipedia.org/wiki/Waffle_slab

    The height of the ribs and beams should be 1 ⁄ 25 of the span between columns. [3] The width of the solid area around the column should be 1 ⁄ 8 of the span between columns. Its height should be the same as the ribs. [3] Diagram showing waffle slab rib and Beam Heights rule of thumb formulas.

  8. Nominal Pipe Size - Wikipedia

    en.wikipedia.org/wiki/Nominal_Pipe_Size

    Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

  9. Laminated veneer lumber - Wikipedia

    en.wikipedia.org/wiki/Laminated_veneer_lumber

    Additionally, some manufacturers further cut LVL into sizes for use as chord-members on I-joists. In 2012, North American LVL manufacturers produced more than 1.2 million cubic metres (43.4 million cubic feet) of LVL in 18 different facilities, and in 2013 the production increased by more than 14%.

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