DAWSON-WAM specialises in the construction of basements using secant and sheet piled retaining wall systems, including close proximity and zero-tolerance installations next to existing structures. We deliver solutions for both open sites and highly restricted or congested urban environments, where precision, minimal disruption, and engineering excellence are critical.
Our advanced Cased CFA piling systems allow us to install piles within as little as 100 mm of neighbouring buildings, compared to the typical 600 mm clearance required with conventional CFA rigs. This precision is achieved while maintaining silent or low-noise and vibration-free operation – making it particularly suitable for sensitive locations such as:
We offer a complete design-and-build service for basements, managing every stage from initial concept to finished structure. Our scope includes:
DAWSON-WAM has significant in-house temporary works capability, providing safe, engineered solutions that support construction efficiency and safety. As part of our basement works, we can design, fabricate, and install:
This capability allows us to control programme, quality, and safety while minimising reliance on external subcontractors.
Our fleet of modern, versatile piling rigs and highly skilled teams enable us to operate efficiently in the most demanding environments. Whether working on a greenfield site or in a dense urban core, we adapt our methodology to ensure safety, quality, and programme certainty.
Visit our Case Studies to see examples of DAWSON-WAM’s basement construction projects, and learn why we are a trusted partner for urban basement engineering across the UK and Ireland.