Structural Lumber

Definition

Structural lumber refers to wood members of a structural system which are manufactured by sawing, re-sawing, passing lengthwise through a standard planing machine, and crosscutting to length, but without further manufacturing.

Purpose

The purpose of structural lumber is to provide strong, reliable, and versatile materials for constructing the framework of buildings and other structures.

Examples of Use

• Residential framing uses structural lumber for walls, floors, and roof systems.
• Decks and outdoor structures employ structural lumber for joists, beams, and posts.
• Bridges and heavy timber structures incorporate structural lumber for load-bearing components.

Related Terms

• Dimensional Lumber: Standard-sized lumber used in construction.
• Timber: Large, square-sawn pieces of wood used for heavy construction.
• Engineered Wood: Wood products manufactured by bonding together wood strands, veneers, or fibers.

Notes

Structural lumber is graded and classified based on its strength and suitability for different applications, ensuring it meets the necessary standards for safety and performance.