Evaluation and Repair of Wrought Iron and - Purdue e-Pubs ...

1439. A method to repair section loss due to corrosion at an eyebar end connection wasexamined using two different eyebar end connection specimens. Both failuresoccurred in the shank of the eyebar, indicating that the filler weld repairprocedures proved to be an adequate method to repair section loss from corrosionin an eyebar end connection.6.3 Implementation of Inspection and Repair RecommendationsUpon completion of this research study, recommendations were developed to aidin the implementation of inspection and rehabilitation procedures for existing historicbridges consisting of wrought iron members. For most wrought iron applications thesewill involve tension members in truss bridges.1. When inspecting an old, existing bridge it is important to know the type ofmaterial for the bridge members. For bridges consisting of wrought ironmembers, it is helpful to determine the year and manufacturer of the bridge. Avisual inspection of the surface of the material after it has been thoroughlycleaned aids in determining if the material is wrought iron. If possible, it is alsorecommended to perform a chemical analysis, tensile test, and charpy impact testfor the material to determine its specific material properties.2. It is important to investigate the condition of the connections in an existinghistoric wrought iron truss bridge. Most bridge connections are designed to actsymmetrically, but after time dynamic loading and previous repairs can causemembers to move and the connection to have unsymmetrical loading. When thisoccurs, forces are not equally distributed through the connection, resulting insome members with an unsafe amount of load placed on them while othersbecome loose and slack. If it is decided to rehabilitate a bridge and the