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TTT Deep Pile Foundations for a new commercial building

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A new commercial building was required on an industrial site in Waltham, Christchurch. This area had been affected by the Canterbury earthquakes. The project was completed in 2014.

TTT Deep Pile Foundations being installed for a new commercial building.
Project challenges

The commercial building needed to be able to withstand any possible future earthquakes.

The building required a foundation system that could support a concrete slab and meet regulatory requirements.

There were multiple dense intermediate ground layers that had to be penetrated to reach a founding layer.

Piles had to be installed close to adjacent buildings.

 

Installation was not allowed to impact on neighbouring properties.

Multiple contractors would be working concurrently on-site to reduce construction time. Pile installation could not impact on the health and safety of other contractors, or on their ability to carry out their work.

Installation had to be rapid, unloading and handling of products had to be easy, and equipment needed to have a small site footprint.

Our solution

TTT Deep Pile Foundations were determined to be the best solution. MultiPole SEDs, 6m long and 225mm in diameter were vibrated through the dense intermediate layers. Once the founding layer had been reached, the poles were cut off above ground at the level required for placement of the commercial building’s concrete slab.

TTT Deep Pile Foundations being installed for a new commercial building.
TTT Deep Pile Foundations being installed for a new commercial building.

The unique hollow core of the MultiPoles made them light, and therefore easy to unload and handle. The hollow core also enabled fast installation using High Frequency Vibration. This method of installation was carried out by specialised equipment with a small site footprint. Other contractors were not disturbed, and piles were able to be positioned close to adjacent structures without affecting them.

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