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New tower for South Korea's Songdo City

DEEP FOUNDATIONS for a new residential tower near Incheon on South Korea's north west coast are due to be finished this month.

Busan-based foundation contractor Daewang E&C Co is using a Manitowoc Model 1015 foundation crane to form the 50m deep piles for the 64-storey No 1 World Commercial and Residential Building project, part of the New Songdo City development.

The machine was delivered in June and began work in July. It is the first in South Korea.

Because the tower is being built on reclaimed land, foundations have to found in bedrock.

Daewang is installing 304, 3m diameter piles, averaging two to three per day. The large diameter of the piles means the rig is fitted with a separately powered casing oscillator.

Excavation within the casing is performed using a single rope hammer grab suspended from the crane's boom.

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