By late afternoon, a huge wooden chair from the museum's collection, which once stood on a concrete pile in the river, was half submerged.

The building is supported on concrete piles and constructed around a steel skeleton.

Instead, the only evidence of a border are the concrete piles buried every kilometer from east to west.

But this humble concrete pile is significant in ways that don't immediately meet the eye.

It was supported on a structure of steel and concrete piles set at the planned altitude for the final building.

A track would have been laid, supported by concrete piles, to enable the building to be moved and lowered into its final position.

Arthur knew, however, that long concrete piles reached far down to bedrock.

They had to bore through the concrete pile until they reached the hollow within it.

The massive concrete pile stood in the center of the cellar.

The station has been built on 11 000 concrete piles which were sunk 25 metres deep.