Contiguous bored pile construction is a widely used technique for creating strong retaining walls in urban and infrastructure projects. This method involves drilling a series of closely spaced piles along the excavation boundary, leaving only small gaps between them. The result is a stable structure capable of supporting surrounding soil while allowing controlled excavation in tight or sensitive areas.

One of the key advantages of contiguous bored pile walls is their adaptability. They can be installed in various soil types and are ideal for sites where vibration must be minimized, such as near existing buildings or utilities. Because the piles are cast in place, engineers can choose appropriate reinforcement and concrete strength based on project requirements.

During construction, each pile is drilled and concreted sequentially, forming a continuous line of vertical supports. Depending on groundwater conditions, the gaps between piles may be sealed with shotcrete or other materials to enhance water resistance.