Makers were commissioned to undertake a programme of concrete sampling and testing to determine the condition of the various concrete elements and also to determine if high alumina cement (HAC) had been used in various structural elements.

Fairly extensive cracking with calcite leaching had developed to the soffit of the deck slabs to the basement and lower basement car parks.

From the concrete testing it was apparent that there were several areas of defective concrete to the tops of the deck slabs, bases of several columns adjacent to the ramps and the deck slab soffits.

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