Bridges

Dehumidification with a DST Dehumidifier provides corrosion protection by reducing the amount of water that can potentially cause rust, resulting in a longer material lifespan, and the savings of resources. DST’s Dehumidifier technology has been implemented at the Sydney Harbour Bridge and the Auckland Bridge.

aerial view of bridge over body of water during daytime

Corrosion of mild steel components and high tensile support wires can quickly compromise structural integrity, resulting in safety issues, costly traffic restrictions, and potential bridge closure.

The girders, on which the tracks lay, can be protected against corrosion by the circulation of dry air through the truss, whereas corrosion protection paint is expensive and demands maintenance.

Painting the bridge increases the weight. Even affixed constructions can be dehumidified instead of using corrosion protection paint. A dehumidifier demands minimal maintenance and saves a lot of time compared to personnel applying corrosion protection paint. Corrosion protection is also necessary in spots very difficult to reach and dry air is often the preferred method.

Bridges (PDF)