- Design and construct contract, including temporary structural supports for the roof and galleries before remediation.
- Strengthening of the upper-wall ring beam with external post-tensioning.
- Installation of exoskeleton in structural steelwork for temporary overall support during the repair work.
- Large-scale hydro-demolition and gunite reinstatement of internal roof cone soffits.
- External concrete repairs via rope access and EWPs.
- Application of protective concrete coatings.
- Abrasive blasting and repainting