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A speed square, also called a rafter square, rafter angle square, and triangle square, is a multi-purpose triangular carpenters' tool used for marking out. Its functions encompass many of those offered by combination squares, try squares, and framing squares. Carpenters use it to make basic measurements and mark lines on dimensional lumber, and ...
As previously noted, less wood is needed to produce a given finished size than when standards called for the green lumber to be the full nominal dimension. However, even the dimensions for finished lumber of a given nominal size have changed over time. In 1910, a typical finished 1-inch (25 mm) board was 13 ⁄ 16 in (21 mm). In 1928, that was ...
The board foot or board-foot is a unit of measurement for the volume of lumber in the United States and Canada. It equals the volume of a board that is one foot (30.5 cm) in length, one foot (30.5 cm) in width, and one inch (2.54 cm) in thickness, or exactly 2.359 737 216 liters. Board foot can be abbreviated as FBM (for "foot, board measure ...
Stud. Sill plate / sole plate / bottom plate. Wall studs are framing components in timber or steel -framed walls, that run between the top and bottom plates. It is a fundamental element in frame building. The majority non- masonry buildings rely on wall studs, with wood being the most common and least-expensive material used for studs.
An automatic calculator computes the BRI using waist, height and an ellipse factor. [1] [2] The only device needed to determine BRI is a measuring tape for circumference of waist and determination of height. [1] [2] These values are factored with an eccentricity equation in a calculator. [1] [2]
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, particularly a building, support and shape. [1] Framing materials are usually wood, engineered wood, or structural steel. The alternative to framed construction is generally called ...
Measuring the compressive strength of a steel drum. In mechanics, compressive strength (or compression strength) is the capacity of a material or structure to withstand loads tending to reduce size (compression). It is opposed to tensile strength which withstands loads tending to elongate, resisting tension (being pulled apart).
The stepped reckoner or Leibniz calculator was a mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz (started in 1673, when he presented a wooden model to the Royal Society of London [2] and completed in 1694). [1] The name comes from the translation of the German term for its operating mechanism, Staffelwalze ...