What are butt spurs used for?

Butt spurs are specifically designed to enhance the stability of a ladder during its use. They are typically metal spikes that attach to the base, or butt end, of a ladder. When the butt of the ladder is positioned on the ground, these spurs dig into the surface, preventing the ladder from slipping or shifting as weight is applied during climbing or working from the ladder. This additional grip is crucial in ensuring the safety of firefighters and other personnel using ladders in precarious environments.

The other options refer to different ladder components or purposes that do not relate to the function of butt spurs. For instance, connecting two beams or serving as cross pieces pertains to structural elements that provide support and strength rather than stability on the ground. Indicating previous heat exposure involves markings or indicators used to assess ladder integrity, unrelated to the physical use of butt spurs. Understanding these distinctions helps clarify the specific role that butt spurs play in ladder safety and stability.