When is shoring needed during palletization?

Shoring is a critical procedure used in palletization to support cargo and ensure stability during transport. The correct answer highlights that shoring is necessary when the cargo exceeds the pallet surface weight psi limitation. This limitation refers to the pounds per square inch that the pallet can safely bear without sustaining damage or compromising the safety of the load.

When cargo exceeds this limitation, it can lead to structural failures, such as the pallet breaking or collapsing under the weight. Implementing shoring helps distribute the weight evenly across the pallet and provides additional support to prevent any movement or shifting of the load, which could cause accidents or damage during transport.

Other answer choices, while they do refer to important conditions in air freight handling, do not specifically trigger the need for shoring in the same way. For instance, cargo under 1,000 lbs might not necessarily require shoring unless it exceeds the specific weight limitation outlined for that pallet. Similarly, while special handling or the presence of hazardous materials might demand specific precautions or procedures, they do not inherently indicate that shoring is required for stability and weight distribution during palletization.