An underpass had to be constructed within the busy Central Business District of Singapore, connecting the renovated Fullerton Hotel to it's car parking facilities. IP Foundations Pte Ltd won the contract, and turned to Ground Support Company Pte Ltd to design and install a sheet pile system.

Soil conditions were very stiff to hard, bouldery clays with considerable buried debris from previous land reclamations. A sheet pile that had a high modulus was required that would enable minimal strutting so as to help expedite the construction works. A major road in downtown Singapore was diverted during construction, so speed was of the essence. Ground Support Company Pte Ltd provided 22 metre P Series Type 1 and 2 sheet piles which were reused 3 times as the construction phases required. To help facilitate driving and penetrate the buried boulders and debris, the pipe clutches were predrilled using a 225mm rotary drill with an air/water flush.

Major telecommunication, electrical, gas and water lines passed through the site, supplying Singapore's commercial and financial district. This had to be left live and required very accurate driving to avoid damage. To negotiate the services, the sheet piles were combined with Universal Beam Posts and timber lagging to cater for the service lines. Sheet piles were interlocked with the I Beam straddling the service lines. The pipe clutch on the sheet piles provided a water tight seal for the entire depth of the 11m deep excavation.