*Case 3.C [#q9c921e5] **The causes of fatigue [#gf69fc1f] > Stresses and deformations unforeseen in design occurred. **Approaches to repairing and retrofitting [#c8ef8c94] > Surface treatments such as TIG dressing and Peening. > **LINK [#ec6931d9] -[[Tomei Ex. bridges]] -[[Steel bridge of The Tomei Expressway]] > TIG dressing for small cracks