en.Wedoany.com Reported - Taylor Wimpey UK has appointed Perega to implement a water-neutral civil and structural engineering strategy for a major residential development project in Horsham. The civil and structural engineering project proposes the construction of 183 houses and five apartment blocks, with early ground investigations confirming the presence of deep and highly variable fill material across the plots.

Perega has designed a piled foundation solution for this, driving piles up to 25 metres deep through the unstable material layers to achieve sufficient embedment into the underlying soil. The piles are connected by reinforced concrete ground beams, supporting masonry house walls and utilising precast concrete floor slabs. The pile layout is coordinated with the architectural design, omitting tie beams where the lateral pile capacity allows, thereby reducing concrete usage. The ground beam concrete mix incorporates Ground Granulated Blast-furnace Slag to reduce embodied carbon, and a cut-and-fill earthworks approach retains site-won material to minimise waste and vehicle movements.

Water neutrality is a key driver of the entire civil and structural engineering strategy. Perega has incorporated Sustainable Drainage Systems across the site, including permeable paving and controlled discharge, developed in coordination with the wider drainage masterplan. The civil and structural engineering package covers the implementation of roads, drainage, and external works within defined level constraints. Perega is managing technical approvals with the local highway authority and the independent water company AWIN, while supporting the project across multiple plots at RIBA Stages 4 and 5.

Perega Senior Civil Engineer Amy Norman said: "This project demonstrates the possibility of combining rigorous engineering with environmental responsibility. Through the strong relationship established with Taylor Wimpey on similar developments, we are effectively coordinating multiple plots simultaneously. The challenge lies in ensuring each individual plot can be seamlessly integrated back into the masterplan infrastructure."

Perega Associate Finn Neylon added: "Establishing the piling strategy early enabled the team to manage ground risks and support the delivery programme. Close coordination with the wider design team was crucial in delivering a practical civil and structural engineering solution suited to the site constraints."

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