Claytons Mindarie Beachfront

Project Information

BACKGROUND

Step into the good life at Claytons Mindarie Beachfront, by Western Australia’s award-winning apartment developer Edge, and designed by Hillam Architects. Inspired by the pristine natural environment, this exclusive collection of apartment residences offers direct beachfront access and a lifetime of ocean views.

CHALLENGE

Reduce pile deflection when excavating to the desired basement level of this new build. Keller Australia completed the CFA piling around the perimeter of the excavation area. The use of shoring wasn’t feasible as the cost and timeframe of the build wouldn’t allow this solution, grouted anchors were a potential solution however these would be going into neighbouring properties and they weren’t happy with this solution.

SOLUTION

Keller Australia solution was to use the largest of the Hulk Earth Anchors. Earth Anchor Systems started to install HG 320 anchors however the soil was dense and the stress on the machine was too great. The team tested an installation with the smallest of the HG range and then proof tested to the engineered load of 16 ton, with this information the change was made to switch to the HG 100. The design was completed by Keller Australia and the installation team followed these updated plans to achieve the desired solution. Each anchor was installed to a depth of 7 metres and then proof tested to the required load, shotcrete was applied to the pile face and the team used 1.8m steel PFC pairs to lock off the anchors under load of 16 ton. The excavation can then be completed with minimal deflection and without delay. Once the concrete slabs are poured the Earth Anchor systems team will remobilise and remove the 7m CTB tendon leaving only the sacrificial anchor head in the ground with minimal soil disturbance. 

PRODUCT

HULK HG100 7m CTB Tendon