When boom sections are stacked on a trailer, what must be placed between them?

When boom sections are stacked on a trailer, blocking must be placed between them to provide proper support and stability during transportation. Blocking serves to prevent the sections from moving or shifting against one another, which could lead to damage or create a safety hazard. It acts as a spacer that helps to distribute the weight evenly and maintains structural integrity.

Blocking is specifically designed for this purpose, ensuring that there is a secure separation between each section while maintaining balance. This practice is crucial in securing the load and is typically part of standard protocols for transporting heavy machinery and equipment. While padding, bracing, and straps each have their roles in load securing, in the context of stacking boom sections, blocking is essential for maintaining proper spacing and support.