Dimension Lumber

Definition

Dimension Lumber is the most common type of framing lumber, typically 2 inches (nominal) thick and referred to as "2 by 4", "2 by 6", etc.

Purpose

The purpose of dimension lumber is to provide standardized sizes of wood for construction, making it easier to design and build structures with uniform materials. It is widely used in framing buildings, including walls, floors, and roofs.

Examples of Use

1. Wall Framing: Using 2x4 or 2x6 dimension lumber to construct the studs and plates in wall frames.
2. Floor Joists: Employing 2x10 or 2x12 dimension lumber as floor joists to support the flooring system.
3. Roof Rafters: Installing 2x8 or larger dimension lumber as rafters to form the roof structure.

Related Terms

• Framing: The process of constructing the skeleton of a building using wood, steel, or other materials.
• Nominal Size: The name of the lumber size (e.g., 2x4) which is not the actual size after milling.
• Stud: A vertical framing member in a wall, typically made from dimension lumber.

Notes

• The actual dimensions of dimension lumber are slightly smaller than their nominal sizes due to the milling process.
• Dimension lumber is graded based on its strength and appearance, affecting its suitability for different construction purposes.
• Proper storage and handling are necessary to maintain the quality and structural integrity of dimension lumber.