Bored piles are in-situ reinforced concrete foundation elements formed by drilling a hole into the ground and casting concrete with reinforcement cages inside it. These piles are highly versatile and can be used in various soil conditions, whether on land, offshore, or even in riverbeds.
Diameters typically range from 600 mm to 3,000 mm, with depths reaching up to 70 meters, depending on design requirements.
The construction process involves drilling the soil, placing a reinforcement cage, and then pouring concrete. In its simplest form, bored piling involves unlined holes; however, in challenging conditions — such as groundwater presence or unstable soils — advanced drilling technologies are employed to ensure safety and quality.