a side dump body including a plurality of side dump bodies pivotally mounted on a truck or trailer frame . each of the side dump bodies may be individually pivotally moved from a transport position to a dumping position through the use of a single hydraulic cylinder whereby the contents of the dump body units may be dumped from the side of the truck or trailer . the design of the dump body is such that it has increased carrying capacity and is lightweight and less expensive to manufacture . further , the end walls , side walls and bottom of each of the side dump bodies are secured together by an adhesive or glue rather than welding .