Working closely with the client, SPEEDECK recommended a piled raft solution as the most economical and technically resilient approach. This eliminated the need for multiple trades typically involved in traditional foundations, streamlining delivery while reducing programme risk and management overhead. The total raft slab area was designed at 653m², with all plots integrated under a single, coordinated scheme.
Concept Design
Design Engineering
The foundation design adopted a 225mm reinforced concrete raft slab supported on 300mm diameter CFA piles, combined with 225mm voidformers to provide protection against ground heave. Engineering analysis demonstrated compliance with Eurocode and warranty provider requirements, giving the client assurance of long-term performance. The pile schedule confirmed safe working loads up to 330kN and pile lengths ranging from 6.5m to 12.0m (rounded to the nearest 0.5m).
Support for the outer skin of brickwork was incorporated via recess toes, ensuring seamless integration between foundations and the superstructure.
Construction
SPEEDECK delivered the complete substructure package, combining piling, slab, and associated works into a single integrated solution, delivered over a 9-week programme. This consolidated approach reduced interface risk, avoided the need for granular piling mats, and ensured programme certainty. By self-delivering the critical substructure works, the team provided a clean, fast, and predictable process from site mobilisation to completion at structural slab level.
