Abstract: The invention provides a unitary tilting container assembly of the portable type adapted to be mounted and demounted on a truck, which includes, in combination, a T-shaped bracing structure adapted to be bolted to the truck, there being hinged, at a first pivot axis, to the bar of the T a box-like load bearing tilting container. There is a hydraulic ram pivotally connected on the one hand, at a second pivot axis, to the end of the leg of the T-shaped bracing structure and, at a third pivot axis, to a trunnion carried on the underside of the container. The ram is extensible and pivotal about the second pivot axis from a closed position in which the floor of the container is alongside and substantially parallel to the leg of the T-shaped bracing structure to an open position of the ram in which the floor of the container is inclined to the leg of the T-shaped bracing structure by an angle of at least 25.degree.. All said first, second and third pivot axes are substantially parallel to one another.