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Postwick

Allison Homes, The Oaks

Postwick

Allison Homes, The Oaks
Postwick

  • Foundations
  • Bulk Earthworks
  • Highways & Infrastructure
  • Foul & Storm Water Drainage
  • Attenuation Basins
  • Asphalt & Block Paving

Scope of works

The development consists of 165 housing plots with full associated infrastructure, forming the second phase of a four-phase project at The Oaks, located just off the NDR. It is part of a larger initiative to bring new and affordable housing to Postwick. Having progressed steadily, this phase has laid a strong foundation for the continued residential expansion in the area and demonstrates the high standards set for future phases.

Our focus at The Oaks has been on precision and sustainability, reusing treated materials effectively while meeting the highest standards for infrastructure and quality. By implementing strict traffic management and careful monitoring from day one, we’ve ensured seamless delivery, cost efficiency, and long-term value for the development.

Our approach

Given the site’s history as a fuelling station for the formation of the NDR, the treated ground and formation required careful management from the outset. The project was secured based on re-using the treated as-raised material, making soil segregation and monitoring critical to ensure all adoptable works met stringent testing criteria.

From day one, our earthworks strategy focused on reusing site-won material efficiently while maintaining quality and compliance, which not only reduced environmental impact but also delivered significant cost savings for the client.

Key stats

Piled Plots: Extensive piling work for specific plots to address ground conditions.

Traditional Plots: Standard foundations constructed for traditional housing.

Subsoli Management: Effective reuse of treated as-raised subsoil across the site.

Basin Reprofiling: Reprofiling works for drainage and site runoff management.

Adoptable Carriageway: Construction of adoptable roads and pathways to meet local authority standards.

Challenges faced and overcome

Phase Continuity

Since the previous phase was constructed by another contractor, numerous coordination and integration challenges had to be addressed to align with the existing development. This required careful planning and collaboration to ensure the new phase seamlessly connected to the established infrastructure without disrupting the ongoing work.

Traffic Management

To protect the treated formation, a strict traffic management plan was implemented from the start, ensuring site activity did not compromise ground integrity. This plan required ongoing monitoring and adjustments to accommodate the simultaneous movement of plant, materials, and workforce while maintaining safety and efficiency across the site.

Variable Sub Soil Strata

The highly changeable nature of the subsoil presented construction challenges throughout, particularly in achieving stable foundations and drainage systems. Our team employed adaptive strategies, including real-time site assessments and targeted remediation, alongside consistent monitoring to maintain progress, quality, and compliance with engineering specifications.

 

2,500 linear metres of adoptable drainage installed to facilitate effective site water management and ensure compliance with local authority standards, supporting the overall infrastructure of the development.

4,500m² of adoptable carriageway completed to provide durable and accessible roadways, meeting local authority specifications and ensuring seamless connectivity within the development.

8,500 linear metres of service mains filled to formation using previously treated as-raised subsoil, reducing project delivery costs and cutting site material import requirements by 45%.