ACTUAL LUMBER DIMENSIONS FULL
ACTUAL LUMBER DIMENSIONS CODE

In North America, typical softwoods used for lumber production include pines, spruces, and firs. Softwood lumber is typically used structurally for framing, flooring, and creating plywood, sheathing, and paneling. Home and apartment listings might advertise a 10’x12′ bedroom, but it may have been rounded up a few inches to create a clean number. Measure your area rug and it’s likely slightly smaller than its listed size. Nominal dimensions may seem misleading but are common. Lumber is most often referred to by its nominal dimensions.

This is also often referred to as dressed lumber. This is much easier for carpenters to work with and more economical to transport.

ACTUAL LUMBER DIMENSIONS FULL

The surface of these boards are rough and full of splinters and saw marks can usually be seen.Īctual lumber refers to the true size of the lumber after it has been seasoned (dried to reduce shrinkage) and planed smooth (or surfaced) to create a uniform product. Nominal lumber refers to the size of lumber after it has been rough-sawn, meaning the initial cuts made to divide a log into boards.

What’s the difference between lumber and timber? Nominal vs Actual Lumber.

Quality assurance of Canadian lumber is achieved via a complex system of product standards, engineering design standards and building codes, involving grading oversight, technical support and a regulatory framework. Special grade dimension lumber called lamstock (laminating stock) is manufactured exclusively for glulam. Lumber can be used directly as framing materials or may be used to manufacture engineered structural products, such as light frame trusses or prefabricated wood I-joists. The predominant use of dimension lumber in building construction is in framing of roofs, floors, shearwalls, diaphragms, and load bearing walls. The maximum length of dimension lumber that can be obtained is about 7 m (23 ft), but varies throughout Canada.

Dimension lumber thicknesses of 64 and 89 mm (2-1/2 and 3-1/2 in) are generally available as surfaced green (S-Grn) only, i.e., moisture content is greater than 19 percent. Air-dried or kiln dried lumber (S-Dry), having a moisture content of 19 percent or less, is readily available in the 38 mm (1.5 in) thickness.

For instance, 38 × 89 mm (1-1/2 × 3-1/2 in) material is referred to nominally as 2 × 4 lumber. Lumber can be referred to by its nominal size in inches, which means the actual size rounded up to the nearest inch or by its actual size in millimeters. Design Values for Canadian Species used in Canadaĭimension lumber is solid sawn wood that is less than 89 mm (3.5 in) in thickness.

ACTUAL LUMBER DIMENSIONS CODE

Wood design in the National Building Code of Canada.CSA S-6 Canadian Highway Bridge Design Code.

Actual lumber dimensions