In the United States and Canada, milled boards are called lumber, while timber describes standing or felled trees.
In … See more

The basic understanding of lumber, or "sawn planks", came about in North America in the seventeenth century. Lumber is the most common and widely used method of sawing logs. Plain sawn lumber is p… See more

Logs are converted into lumber by being sawn, hewn, or split. Sawing with a rip saw is the most common method, because sawing allows logs of lower quality, with irregular grain and large knots, to be used and is more econ… See more

Dimensional lumber is lumber that is cut to standardized width and depth, often specified in millimetres or inches (but see below for information on nominal dimensions vs. actual dimensions). Carpenters extensively … See more

Defects occurring in lumber are grouped into the following four divisions:
During the process of converting timber to commercial forms of lumber the following defects may occur:
• Chip … See more

Under proper conditions, wood provides excellent, lasting performance. However, it also faces several potential threats to service life, including fungal activity and insect damage – which can be avoided in numerous … See more