Constuction Method Highlights:

• Erect scaffolding all around
• Coring horizontally and continuously through the wall below the level of cracks
• Leaving the cored pieces inside.
• Coring the wall in vertical cuts, up to the slab's bottom.
• Cutting the tank’s upper wall circumference using 12 coring machines simultaneously
• Cutting the roof in 12 pie sections using 1400mm dia.Diamond Saw Cutters.
• Saw cut the top slab in twelve equal triangular segments after supporting them from the bottom with heavy duty scaffolding
• Lifting the 12 pie sections, weighing 45 tons each, using a 250 ton capacity Hydraulic Truck Mounted Crane
• Transporting the cut roof and wall slabs, using a 100 ton capacity trailer, 22km away from the job site to a designated Royal Commission dumping area
• Exposing the steel reinforcement of the top of the tank's wall, drilling and inserting of new steel anchors
• Reinstalling new reinforcement in preassembled segments
• Shuttering, then pouring concrete into the top of each wall segment.