Abstract: A load-support module comprises first and second frame structures of rectangular plan form disposed one above the other on a common central axis, with load support members attached to and extending between the structures. The frame structures are such that the modules can be stacked one on another in nested relationship. The modules are disposed in close-packed rows on a base frame structure, forming a load-support surface. Contiguous modules are demountably secured to one another and are each provided with fitted floor members. The entire structure is provided with a demountable, peripheral flexible skirt. A number of such structures can be combined to transport very large objects.