What component must be installed at each end of the scaffold?

The component that must be installed at each end of the scaffold to ensure structural integrity and stability is ties. Ties are critical because they connect the scaffold to a stable structure, such as a building or another firm surface, preventing the scaffold from swaying or collapsing due to wind, loads, or movement on the scaffold itself. This is essential for worker safety and compliance with safety regulations, as they help maintain the scaffold's position and reduce the risk of tipping.

Frames, while important for the overall structure, are not specifically responsible for anchoring the scaffold to an external structure. Connections refer to the points where components of the scaffold join together, and braces help stabilize the frame but do not provide the necessary anchoring to the structure. Each of these components plays a role in the overall scaffolding system, but ties are the key elements that must be installed at the ends to secure the scaffold properly.