Single Girder Crane

Single girder cranes can be under running (end trucks ride on the lower flange of the runway beam, bridge beam is connected below the end truck) or top running (end trucks typically ride on rail fastened to the top of the runway beam, bridge beam is connected above or to the side of the end truck.) Single girder cranes can be designed and manufactured in a wide variety of capacities, sizes, and spans. The girder on a single girder crane is typically a wide flange beam, although it can be a patented track beam, a truss beam, or a welded box girder for spans over 70 feet. The hoist traditionally rides on the lower flange of a single girder beam.