Which type of measurement is used for surface deformation in dry vans?

Surface deformation in dry vans is best assessed using linear measurement. This method is essential for identifying changes in the shape or form of the van's surface over time, which can point to structural issues or stress points.

Linear measurements provide the precise distances or dimensions necessary to detect any alterations such as bulges, dents, or distortions in the structure that could compromise the integrity of the dry van. For instance, measuring the distance between specific reference points on the surface allows for easy identification of deformation.

Other forms of measurement, like area and volume measurements, are less effective in this context. Area measurement focuses on the two-dimensional extent of a surface, while volume measurement looks at the three-dimensional space inside the van, neither of which directly indicate surface integrity. Weight measurement, while important for overall load management and safety compliance, does not provide information regarding the surface condition of the dry van itself. Thus, linear measurement stands out as the most relevant and practical choice for assessing surface deformation.