Scab

Definition

A scab is a short piece of lumber used to splice or to prevent movement of two other pieces.

Purpose

The purpose of a scab is to reinforce a joint between two pieces of lumber, providing additional strength and stability to the connection.

Examples of Use

• Carpenters use scabs to join two beams or joists when the original length is insufficient.
• In roofing, scabs can be used to reinforce truss connections.
• Scabs are used in temporary structures to prevent movement and add rigidity.

Related Terms

• Splice: A joint connecting two pieces of material end-to-end.
• Brace: A support that strengthens and stabilizes a structure.
• Reinforcement: The act of adding strength to a structure.

Notes

Properly installed scabs ensure that the joint remains strong and stable, preventing structural failure and maintaining the integrity of the construction.