All Gorbel® Jib and Work Station Cranes have a design factor of 15% of the allowable capacity for hoist weight and 25% of the allowable capacity for impact.
Consider both deflection and stress. The difference in elevation of the track between an unloaded crane and fully loaded crane; measure in inches. L= support center distance. Gorbel tends to have stricter deflection guidelines than others in the industry because we consider both deflection and stress. Work Station Cranes: Typical design guidelines are L/450 for bridge cranes Work Station Jib Cranes: Typical design guidelines are L/320 for wall mounted (WSJ200), L/200 for free standing (WSJ360), and L/450 for aluminum work station jibs (AL100). Jib Cranes: Typical design guidelines are L/150 for wall cantilever (WC), free standing (FS), mast type (MT), and L/450 for wall bracket (WB) cranes. Due to configuration restrictions some models may not meet these guidelines.
Download printable design standards (pdf file)