The invention relates to a heavy load support that is made of plastic and comprises at least a rectangular bottom part with a leg part into which the fork of a forklift engages and which is provided with props located at least in the four corner areas of the bottom part. Metallic U-shaped profiled rails that are open towards the outside are provided between the props along the bottom edge of the load support. The inventive heavy load support is characterized in that the props can be removably fixed to the bottom face of the bottom part of the load support and are provided with a support area for the corner areas of the bottom part of the load support as well as an edge which rises vertically from the support area and encloses the edges of the load support at a right angle, pegs being molded onto the free final leg surfaces of the edge in order to accommodate and fix the U-shaped profiled strips.