Another important characteristic of the Q Drum is that the longitudinal shaft also serves as a vertical support structure which provides added strength and increases the top load compression resistance when filled containers are stacked on top of each other.

Most existing containers can only be stacked two or maybe three high when filled with heavy fluids or other substances such as chemicals for the agricultural industries. In a SABS (South African Bureau of Standards) compression test performed on the Q Drum, the maximum load reached before collapse was 3,7 tons which equates to 40 full containers stacked approximately 25 metres high.

This exceeds the international stacking requirements a number of times, making Q Drum an easy vessel to store and transport in large quantities.