A typical 53-foot trailer that is 9 feet high and 8 feet wide contains 3,816 cubic feet of space. However, because of the irregular shape of many items being shipped, a trailer is often not filled completely. Air pockets are located in various locations throughout the trailer.
For practical purposes, about 3,400 cubic feet of material fits into a 53-foot trailer. It is able to comfortably haul 34,000 pounds of cargo. A slightly smaller standard trailer size is 48 feet long. This transport about 3,000 cubic feet of goods. Maximum weight is 30,000 pounds. The average density of freight is assumed to be about 10 pounds per cubic foot.