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  2. Lumber - Wikipedia

    en.wikipedia.org/wiki/Lumber

    Lumber is wood that has been processed into uniform and useful sizes (dimensional lumber), including beams and planks or boards. Lumber is mainly used for construction framing , as well as finishing (floors, wall panels , window frames ).

  3. Engineered wood - Wikipedia

    en.wikipedia.org/wiki/Engineered_wood

    The products are very stable and some offer greater structural strength than typical wood building materials. [47] Glued laminated timber has greater strength and stiffness than comparable dimensional lumber and, pound for pound, is stronger than steel. [3] Engineered wood panels are easy to work with using ordinary tools and basic skills.

  4. I-joist - Wikipedia

    en.wikipedia.org/wiki/I-joist

    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 carries heavy loads with less lumber than a dimensional solid wood joist. [1] As of 2005, approximately 50% of all wood light framed floors used I-joists.

  5. Glued laminated timber - Wikipedia

    en.wikipedia.org/wiki/Glued_laminated_timber

    Glulam brace with plates used for connections Glulam frame of a roof structure. Glued laminated timber, commonly referred to as glulam, is a type of structural engineered wood product constituted by layers of dimensional lumber bonded together with durable, moisture-resistant structural adhesives so that all of the grain runs parallel to the longitudinal axis.

  6. Joist - Wikipedia

    en.wikipedia.org/wiki/Joist

    Standard dimensional lumber joists have their limitations due to the limits of what farmed lumber can provide. Engineered wood products such as I-joists gain strength from expanding the overall depth of the joist, as well as by providing high-quality engineered wood for both the bottom and the top chords of the joist. A common saying regarding ...

  7. Parallel-strand lumber - Wikipedia

    en.wikipedia.org/wiki/Parallel-strand_lumber

    [citation needed] PSL can be made from any wood species, but Douglas fir, southern pine, western hemlock, and yellow poplar are commonly chosen [9] because of their superior strength. The product is manufactured as a 12-by-12-inch (300 mm × 300 mm) or 12-by-18-inch (300 mm × 460 mm) billet in a rectangular cross-section, which is then ...

  8. Cross-laminated timber - Wikipedia

    en.wikipedia.org/wiki/Cross-laminated_timber

    Cross-laminated timber (CLT) is a subcategory of engineered wood [1] panel product made from gluing together at least three layers [2] of solid-sawn lumber (i.e. lumber cut from a single log). [3] Each layer of boards is usually oriented perpendicular to adjacent layers and glued on the wide faces of each board, usually in a symmetric way so ...

  9. Thermally modified wood - Wikipedia

    en.wikipedia.org/wiki/Thermally_modified_wood

    When the wood is heated beneath the surface of a molten metal the strength loss for any antishrink efficiency is less than when heated in air. The strength loss is still too great to make this a commercially applicable method for obtaining dimensional stabilization of wood, except perhaps for some abnormal use where strength is of relatively ...

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