and latchlocks are connection devices securing two containers at
the corner fittings during stacking, transporting, or lifting empty
container situations. Stacking fittings or stacking cones secure
containers only horizontally during stacking or transporting and
are always used in junction with other securing devices. The connection
devices can support lateral and gravity loads under normal
shipping operations (150 kN tensile strength and 850 kN compressive
strength). Depending on the container structure’s application,
further modification to the locking connections may need to be
developed. The research briefly discusses connection methods
and further investigation is required to design optimum container
structure connections. Fig. 5b shows a non-locking connection
method between two containers used for a structure which is
uncommon, and its structural characteristics are unknown.