Selecting the most suitable foundation requires careful consideration of several key factors, including:
- Ground conditions
- Weight of the building
- Proximity to existing structures and site constraints
- Cost and construction feasibility
Failing to account for these factors can lead to a range of serious issues, such as:
- Cracks or sinking in walls
- Uneven settlement across the building’s base
- The need for costly remedial measures, such as underpinning, which can cause significant time delays and budget overruns
- In extreme cases, structural failure
At Harban Redwood, our experienced engineers draw on decades of expertise to provide tailored advice that helps developers and homeowners make informed decisions, ensuring structural stability, cost efficiency, and long-term performance throughout every stage of construction.
Understanding the Main Foundation Types
Foundations are typically classified into two main categories, shallow and deep. Shallow foundations are commonly used in smaller-scale residential developments where ground conditions are generally stable. The most common types include:
- Strip/Trench Footings – Concrete footings installed directly beneath load-bearing walls, transferring the weight of the structure into a deeper, stronger soil layer.
- Raft Foundations – Foundations that cover the entire footprint of the building, distributing the structure’s weight evenly across the underlying soil.
Deep foundations, in contrast, are employed in areas with weaker soils or for taller, heavier buildings. These foundations transfer structural loads deep into the ground to reach stronger soil strata or bedrock, via concrete piles. These piles are often used in combination with other foundation types, such as raft foundations, to ensure stability at the required depth. For a more detailed overview of the various foundation types and their applications, please refer to the attached PDF guide.
How We Can Help You
As structural engineers, we take full responsibility for designing the most suitable foundation for your property. Our approach includes:
- Assessing Ground Conditions – Whether the site consists of moisture-sensitive clay or erosion-prone sand, we conduct thorough surveys to identify potential weaknesses and engineer solutions that ensure long-term stability.
- Analysing the Building’s Load – Understanding the weight and distribution of the structure allows us to determine the foundation type best suited to support it safely and efficiently.
- Evaluating Site Constraints – By considering site access and potential obstacles, we develop solutions that are not only structurally sound but also practical to build, optimizing both installation speed and cost-effectiveness
Through this process, we ensure that every foundation we design delivers maximum safety, performance, and value for your development.
At Harban Redwood, we don’t just build for today, we plan for decades. Our experienced engineers ensure that every project begins with safety, sustainability, and cost-effectiveness at its core. If you’d like expert, personalised advice on the best foundation options for your project, feel free to contact us at info@harbanredwood.com
