Astwood, Buckinghamshire
- Client / architect + contractor: Astrum Homes
- Project type: Residential development
- Size of project: 5 plots
- Our role: Structural engineering design
- Point of engagement: Repeat client, engaged following receipt of planning permission
- Location: Cranfield Road, Astwood near Milton Keynes in Buckinghamshire
Project overview
Astrum Homes approached us to provide full structural engineering design input for their new residential development. The project consisted of five family homes, requiring high quality structural solutions to meet planning and building regulation requirements while ensuring long-term durability.
Structural design approach
The development utilised traditional load-bearing masonry units, ensuring robust and well-understood construction methods suitable for residential housing. Several key elements were incorporated into the structural design:
- Foundations: Trench fill foundations were selected as the most suitable approach. However, due to the proximity of trees, some areas required localised deepening to mitigate potential ground movement and ensure stability.
- Flooring system: The ground floors were designed using suspended beam and block.
- First floor: Engineered posi joists were specified for a lightweight but strong solution.
- Roof structure: The properties featured traditional trussed roof systems that could be easily installed on-site.
Challenges and solutions
One of the primary challenges of this project was managing foundation depths due to the influence of nearby trees. To counteract potential subsidence or heave, careful assessment of soil conditions and tree influence was carried out, leading to a locally deepened foundation solution in specific areas. This approach ensured long-term stability without unnecessary excavation or material use.
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