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 deflectionguidelines 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.