When is dimensional weight applied to parcels?

Dimensional weight is a pricing technique used by shipping companies, including USPS, to account for the size of a package relative to its weight. This method ensures that larger, lighter packages do not take up space in shipping vehicles without contributing to revenue proportionate to their size.

The correct choice indicates that dimensional weight is applied to parcels that exceed one cubic foot. This threshold is based on the understanding that parcels larger than this size potentially take up more space than their actual weight would suggest. When a package exceeds this volume, shipping costs are calculated using either the actual weight or the dimensional weight (which is determined by the package's measurements) – whichever is greater.

Understanding this concept helps postal workers assess shipping costs accurately, ensuring that revenue reflects the space used in shipping vehicles, regardless of the weight of the contents inside the package. This principle is crucial for maintaining an efficient and profitable shipping process.