Farcccture Behavior The Of The Strengthened Steel Beams

Steel bridges which remain serviceable for a relative long time need a regular, obligatory inspection and control which may result a request to carry out some limited maintenances, they also need to develop its structures to suit either the changes caused due to growth of the civilization ( use of heavier vehicles , increase in traffic density ,…etc ) or the deterioration caused by age and environmental factors ( the adverse effects of corrosion , using excess of deicing salts ,….etc ).