Weathering Steel Design Considerations

Weathering Steel Design Considerations

Weathering Steel Design Considerations Structural Benefits ▪ High strength to weight ratio ▪ Minimise structural depth ▪ Longer spans ▪ Variable structural depth ▪ Splice connections for continuous spans ▪ Less demand on substructure design ▪ Construction Benefits ▪ Lighter girders ▪ Rapid...
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Weathering Steel Design Considerations

Structural Benefits

▪ High strength to weight ratio

▪ Minimise structural depth

▪ Longer spans

▪ Variable structural depth

▪ Splice connections for continuous spans

▪ Less demand on substructure design

▪ Construction Benefits

▪ Lighter girders

▪ Rapid construction

▪ Fabrication off site in controlled workshop, automated

▪ All steel is visible for inspection

Atmospheric environment major factor in formation and long term performance of the patina

▪ NOT suitable environments include;

▪ Constant dampness, buried

▪ High chloride concentrations, coastal environment

▪ High pollutant concentrations, industrial area, corrosive fumes

▪ Directly over water bodies within 2.5m (UK BD 7/01)

▪ Require constant wetting, drying cycles to form adherent, stable patina

▪ Moisture day/night cycle

▪ Corrosion allowance related to atmospheric environment and classification

Weathering Steel Design Considerations


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