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Arma Piling
235-239 High Road, Ashley House Unit 312 London N22 8HF
Bottom-Driven Steel-Cased Piling in London
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Bottom-Driven Steel-Cased Piling in London
Drop Hammer Method – Compact, Reliable Piling for Challenging Ground Conditions
At Arma Piling, we offer expert bottom-driven steel-cased piling services using the drop hammer method—a proven solution for projects where loose or unstable soils make borehole formation difficult.
Our compact 3-ton piling rig allows access through tight areas as narrow as 780mm, making this method ideal for residential extensions, small construction sites, and urban properties across London and the South East.
What Is Drop Hammer / Bottom-Driven Piling?
This technique involves driving steel tubes into the ground using a drop hammer mechanism. A heavy weight is dropped repeatedly onto the casing, forcing it down through the soil layers. Once the pile has reached the desired depth—or penetrated into stable ground—the tube is trimmed to the correct level, reinforced with steel, and filled with concrete.
This method is especially useful when:
- Ground conditions are too loose for auger or borehole methods
- Vibration needs to be kept moderate
- Access is limited and a small rig is required
- Reliable pile bearing is needed in mixed or variable strata
Specifications
- Pile diameters: 150mm – 300mm
- Rig type: Compact 3-ton piling rig
- Access width required: Minimum 780mm
- No auger or borehole needed
- Ground compaction effect: As pile is driven, it compacts surrounding soil
Get in touch with us – we’ll help you bring your project to life from the ground up.
Drop Hammer Piling London
Key Benefits of Drop Hammer Piling
- Ideal for loose or weak soils – no borehole required
- Cost-effective solution – great for small-scale projects
- Compact equipment – perfect for tight residential access
- Reliable ground compaction – creates strong, stable base
- Quick installation – minimal prep and fast cycle times
Minimal spoil – less mess, less disposal needed
Where Is This Method Best Used?
Drop hammer steel-cased piles are ideal for:
- House extensions
- Garden offices / rooms
- Small new build foundations
- Garages and outbuildings
- Urban properties with restricted access
- Sites with loose fill or unstable upper soil layers
