Design of Vertical Hydraulic Telescopic Lifting Booms

A small number of specialty lifting equipment manufacturers currently produce hydraulic lifting gantries that utilize hydraulically telescoped legs that are structured much like telescopic crane booms. There are presently no uniform standards that provide guidance to the industry for the design and fabrication of such equipment. This paper discusses the uses of these gantries, examines current standards for similar types of lifting equipment, and makes recommendations for design and fabrication.