MRT rapid transportation network, Muza Line, Taipei, Taiwan

In 1994, cracks were discovered in the concrete corbelled pier caps of the Muza line steel girder viaduct. The emergency repair scheme consisted of placing external Ø36 mm DYWIDAG Bar Tendons (THREADBAR ^® ) on both sides of the pier cap.

These were anchored in steel grillages at each end of the caps and were supplied with the DYWIDAG Double Corrosion Protection System. All exposed steel parts of the grillages were protected by a three coat paint system. On selected tendons, permanent load cells were installed to monitor the prestressing forces.