Gantrail supply a range of products that are used in association with cranes, crane rails and girders. The girder surge connector or tieback as it is also known in some parts of the world owes its origins to the same source of innovative thinking as the design of the adjustable clips. It solves a problem that used to be equally intractable.

Crane Girder Surge Connectors (tie backs) Gantrail crane (runway) girder surge connectors (girder tie backs) solve a long-standing problem in large industrial buildings.

Crane girders (runway beams) need to transfer horizontal forces from the cranes into the building. With small buildings and modest forces, the girders can carry the forces through the fixing at the girder bottom flange Crane girders (runway beams) need to transfer horizontal forces from the cranes into the building. With small buildings and modest forces, the girders can carry the forces through the fixing at the girder bottom flange Surge Connector in relation to Columns and Crane Girder In steel works, aluminium plants and other heavy facilities, there are often problems in carrying these forces. The top of the girder is connected to the building roof column. This connection is designed to carry the majority of the horizontal force from the crane rail, perpendicular to the girder axis. Traditional designs are prone to fatigue failure. Traditional Girder Surge Connector fabricated from relatively thin plate The heart of the Gantrail crane girder surge connectors has two robust ball and socket joints. These can carry significant forces and allow all the movement due to the design and loading of the structure. Link Assembled Link with balls removed The standard Gantrail range caters for most applications in industry. Special designs can be provided to suite any application either metric or in imperial dimensions. Standard designs Bolt Diameter Allowable Design Force (kN) 12 26 16 47 20 74 24 106 30 165 36 238 39 280 42 324 45 372 52 497 56 576 Girder Surge Connector Product Application Questionnaire