How is the roof panel outward deformation measured on flat bar type top side rails?

Measuring roof panel outward deformation on flat bar type top side rails is crucial for assessing the structural integrity of a dry van. The specific standard measurement for this type of deformation is set at 55mm. This measurement indicates the maximum allowable outward deformation that a roof panel can sustain before it is considered compromised.

The reason this value is critical is rooted in the structural design and safety of the van; exceeding this measurement may suggest that the roof is at risk of collapsing or could lead to potential leaks and damage during transit. The standards are established to ensure that the containers maintain their shape and functionality under normal operating conditions.

Understanding this standard helps those involved in the maintenance, repair, or inspection of dry vans to take appropriate actions when deformation is noted, ensuring that the vans continue to meet safety regulations and are capable of adequately protecting the cargo they carry.