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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 ...
Typical dimensions of today's "two by four" is 1.5 by 3.5 inches (38 mm × 89 mm) dimensional lumber prior to sanding and are typically placed 16 inches (406 mm) from each other's center, but sometimes also at 12 inches (305 mm) or 24 inches (610 mm).
The board foot or board-foot is a unit of measurement for the volume of lumber in the United States and Canada [1].It equals the volume of a board that is one foot (30.5 cm) in length, one foot in width, and one inch (2.54 cm) in thickness, or exactly 2.359 737 216 liters.
Light frame material dimensions range from 38 by 89 mm (1.5 by 3.5 in); i.e., a Dimensional number two-by-four to 5 cm by 30 cm (two-by-twelve inches) at the cross-section, and lengths ranging from 2.5 metres (8.2 ft) for walls to 7 metres (23 ft) or more for joists and rafters.
"True dimensional lumber" isn't more splintery than modern "nominal dimension lumber" due to lack of planing. The 2x4s I find in pre-WW2 construction are often more splintery than post-ww2 lumber because they are old dry first-growth hard yellow pine whereas modern 2x4 is half-dried fir or spruce cut from forests that have been repeatedly clear ...
If an accident happens and a roofer loses his/her footing, the 2x4 would stop the roofer from sliding down and/or off the roof. [1] More deaths occur in falls than for any other reason in the construction profession. [2] More generally, a toe board is a small vertical barrier attached to a raised floor or raised platform.
The nominal size may not match any dimension of the product, but within the domain of that product the nominal size may correspond to a large number of highly standardized dimensions and tolerances. Nominal sizes may be well-standardized across an industry, or may be proprietary to one manufacturer. Applying the nominal size across domains ...
2 4, a time signature in music; 2×4 (Guadalcanal Diary album), 1987; 2×4 (Einstürzende Neubauten album), 1984; 2×4 (Malachi Favors and Tatsu Aoki album), 1999; Two by Four, 1989 album by Marc Johnson