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Foundations were required for a new residential development for emergency housing in Otahuhu, Auckland.
MultiPole Uglie poles, 2.4 to 4.8m x 250mm, 2500 pieces, were used.
MultiPoles are incredibly versatile timber poles with a unique hollow core.
MultiPole Uglie poles are similar to SED poles but are debarked rather than peeled. They offer greater skin friction when used as piles and are stronger than SED poles.
The unique hollow core of the MultiPole allowed for fast installation via high-frequency vibration – 3 to 5 house foundations were installed daily.
The ground conditions were very soft.
The ground was highly contaminated so could not be disturbed.
The project site was busy with many contractors working at the same time.
Installation needed to be rapid.
Unloading and handling needed to be easy.
H5 treated Radiata Pine timber piles were determined as the best solution given the soft ground conditions.
Poles were larger in diameter than usually required due to the very soft ground conditions.
Gravel was placed over the contaminated ground and the poles were vibrated through the gravel. This ensured the contaminated ground was left in situ, and undisturbed.
TDPF01 – Deep Pile Foundations tech sheet
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CDPF06 – Residential housing Otahuhu case study
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CDPF08 – Apartment buildings Otahuhu case study
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