To ensure safety, what kind of blocking should be used between stacked crane boom sections?

Using wooden blocks between stacked crane boom sections is essential for ensuring safety due to several key reasons. Wooden blocks provide the necessary stability and cushioning that prevents the boom sections from shifting or collapsing during storage or transport. They can absorb shock and reduce friction, which minimizes the risk of damage to both the crane components and the surrounding area. Additionally, wood has good load-bearing properties and can easily accommodate variations in the surfaces on which the crane sections rest.

Other materials like metal plates, rubber mats, and plastic wedges may not provide the same level of stability or shock absorption as wooden blocks. Metal plates can lead to slippage and do not compress to fill gaps effectively, which can result in instability. Rubber mats, while they can provide some cushioning, don’t provide adequate support to prevent movement under heavy loads. Plastic wedges may not be strong enough to bear the weight of stacked sections reliably. Therefore, wooden blocks are the most effective choice for safely blocking crane boom sections.