When must scaffold casters and wheels be locked?

Locking scaffold casters and wheels is a crucial safety measure that is required whenever the scaffold is being used in a stationary manner. This is important because it prevents the scaffold from moving unexpectedly, which could lead to dangerous falls or instability while workers are on it. Scaffolds are designed to provide a stable work platform, and ensuring that the casters and wheels are locked secures this stability, especially when workers are performing tasks that require significant focus or physical exertion.

While there are safety considerations related to transporting scaffolds and using them on uneven surfaces, the primary requirement is to lock the wheels before work begins, ensuring the scaffold remains in place during operation. This practice is part of standard safety protocols in construction and maintenance work, emphasizing the need for caution and proper setup.