Bored Piling

Donegan Civil Engineering provides specialist bored piling solutions for complex infrastructure projects where ground conditions or proximity to existing structures require a vibration-free approach. Unlike driven piling, bored piles are drilled rather than hammered, making them the ideal choice for urban environments and unstable ground.

We deliver comprehensive piling packages that integrate seamlessly with our wider shaft sinking and deep excavation capabilities, providing a complete underground engineering solution for the water and transport sectors.

Contact our friendly team today to discuss more about our shaft sinking projects!

Our Work

Our bored piling process ensures maximum structural integrity and load-bearing capacity:

Boring: A rotary piling rig uses an auger or drilling bucket to remove soil and form a clean, open borehole to the required design depth.

Reinforcement: A pre-fabricated steel reinforcement cage is lifted and lowered into the open bore to provide tensile strength.

Concreting: Structural concrete is poured into the bore (often using a tremie pipe if groundwater is present) to complete the pile.

Why Choose Bored Piling?

High Load Capacity: Suitable for heavy loads such as bridge abutments, large industrial facilities, and high-rise structures.
Low Vibration & Noise: Because the earth is drilled rather than displaced, this method is essential for working near residential areas or sensitive existing utilities.
Variable Depths: We can drill through various soil types, including stiff clays and rock, to reach stable founding layers at significant depths.
Ground Movement Control: Ideal for retaining walls where limiting ground movement is critical to protecting adjacent infrastructure.

Common Applications

Contiguous & Secant Walls: Forming rigid retaining walls for deep basements and shaft excavations.
Bridge & Viaduct Foundations: Supporting heavy vertical loads for transport infrastructure.
Slope Stabilisation: preventing landslides and securing embankments near rail or road networks.
Noise-Sensitive Sites: Working in urban centers where traditional pile driving is not permitted.