The front corner of the property was so badly cracked and distorted that the corner of the property had to be taken down. Prior to its removal, our engineers designed a temporary scaffold with needle beams to support the roof above, while the underpinning was being undertaken.
Once the wall was down and the property stripped out, we installed a piled raft using twenty four 200 mm diameter Open Auger Piles to an average depth of 10m. These piles were then all linked by a 225mm thick reinforced concrete raft which then extended through all the walls so that the whole property was supported on the new piled raft.
Full anti-heave precautions were included to the upper 4 meter section of each pile, and a 150mm clear void was formed beneath the raft by casting the raft on 160mm Clayboard.
Upon completion of our underpinning works, we issued a 12 year Defects Insurance Guarantee.