20 Construction Lumber Dimensions In This Year

The term dimensional lumber came into popular use around the beginning of the 20th century to distinguish lumber cut to pre determined sizes from other types of wood such as corded wood for fireplaces during this period the building industry sought to control costs and minimize waste by developing standard sizes and grades for building timber.
Construction lumber dimensions. Ansi aitc a190 1 1992 allows for any width and depth of glue laminated timber. Softwood lumber for construction comes in its own range of thicknesses and face widths. Dimensional lumber and modern building. The following data is standard reference and size data for commercially available lumber within the usa.
Standard dimensions for construction lumber include thicknesses of one by and two by and widths from two inches to 12 inches. Dimension lumber can be purchased as dry or. Most lumber for residential construction comes from 8 feet 244 centimeters to 16 ft. The actual measurements are the final size.
All data is in imperial units inches. For example there are two by fours one by sixes and other combinations of those numbers. 488 cm long with 24 71 mm increment. Standard softwood lumber sizes.
It also comes with its own terminology and some variation in moisture content which has an impact on actual dimensions. Common lumber dimensions nominal vs. Some lumber might be sold in odd sizes such as 7 or 9 feet but it is rare and might be available just from certain lumber retailers. Mechanical tolerance variations of lumber.
But typically 8 10 and 12 are common length. Voluntary product standard ps 20 05 american softwood lumber standard. The nominal measurements are a board s size before it has been planed smooth surfaced on all 4 sides. Glue laminated lumber dimensions.
Why a 2 4 is not always a 2 4 lumber sizes are usually given in nominal measurements. The following table comes from the american institute of timber construction s standard specification for structural glued laminated timber of hardwood species publication.