Overview

This project involved the structural design of six new-build houses on a tight infill site. Situated within an established cul-de-sac, the development required a design that respected the difficult topography while minimising the impact on the quiet residential surroundings.

The challenge

The site presented significant topographical challenges, including a steep slope and mature tree roots extending over 2m deep. Traditional deep-trench foundations would have required massive excavations, resulting in high volumes of spoil and constant heavy plant movement through the narrow access of the cul-de-sac.

The structural strategy

We implemented a piling scheme to bypass the root systems and drastically reduce the amount of excavated waste. This proactive choice lowered the project's carbon footprint and utilised a low-vibration approach that was essential for a smooth Party Wall process with adjacent homeowners. By collaborating early with the architect, we refined the layouts to ensure the traditional masonry superstructures were material-efficient, reducing the requirement for structural steelwork.

Outcome

Our approach delivered a 'lean' structural solution that was commercially viable and builder-friendly. By prioritising site logistics during the design phase, we protected the project timeline and maintained positive relationships with the local community.