*Case 1.A [#md49eb8c]
*Case 3.B [#md49eb8c]
**The causes of fatigue [#g4b3c133]
>
Welding defects were included at the time of fabrication. 
Stresses and deformations unforeseen in design occurred. 
**Approaches to repairing and retrofitting [#ba0d4ef8]
>
Removal of crack.

re-weld
>
**LINK [#b6f4ff9f]

-[[Section L-2C]]
-[[Steel bridge on Hanshin Expressway]] 
>
Grind out and Hole saw
Replacement and welding

-[[Gulf Outlet Br.]]
-[[Severn Crossing]] 
>
Crack removal
Re-welding, Plate welding or Cut away and ice plate
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