Harringay North London
Project Overview
Liba Consulting was appointed to deliver the full structural engineering design for a single-storey ground floor extension and internal alterations at a residential property in Harringay North London. The project involved transforming the existing layout to create by adding a ground floor extension to a more open and functional living space, while ensuring full structural integrity and compliance with current regulations.
Key Engineering Challenges
The project required careful coordination between architectural intent and structural feasibility. Key challenges included:
- Large rear opening with bifold doors, requiring a robust support system
- Integration of a goalpost steel frame to redistribute loads
- Supporting existing masonry and upper floors during alterations
- Designing foundations suitable for site soil conditions
- Maintaining structural stability throughout construction
Engineering Solutions
Liba Consulting developed efficient and buildable solutions tailored to the project:
Steel Structure Design
- Designed a goalpost frame system to support new openings and loads from above
- Specified S355 steel members with detailed connection design
- Verified performance under combined loading (dead, live, and wind loads)
- Ensured compliance with Eurocode 3 for strength, stability, and deflection
Foundation Design
- Designed strip foundations and multiple pad foundations for steel posts
- Verified bearing pressures against allowable soil capacity
- All foundation checks achieved PASS within safe utilisation limits
Lintels & Load Transfer
- Designed lintels for new openings, including bifold door support
- Ensured adequate bearing lengths and load distribution
- Verified loads from masonry and roof structures
Timber Roof Structure
- Designed new roof elements using C24 timber
- Provided detailing for rafters, ridge beams, and connections
- Ensured proper load paths into supporting walls
Risk Management & Compliance
A full risk assessment was carried out to address:
- Foundation failure risks
- Structural instability during construction
- Overloading of masonry and steel elements
- Temporary works and site safety
Mitigation measures were clearly defined, ensuring safe construction practices and long-term performance.
Outcome
The project delivered:
- A safe and efficient structural design enabling the architectural vision
- Optimised steel and foundation solutions, reducing unnecessary cost
- Full compliance with UK Building Regulations and Eurocodes
- Clear construction guidance for contractors
Why This Project Matters
This project highlights Liba Consulting’s ability to:
- Deliver end-to-end structural design for residential extensions
- Solve complex load transfer challenges with practical solutions
- Balance engineering efficiency with buildability
- Provide clear, reliable documentation for approval and construction
Ready to Discuss Your Project?
Whether you need structural calculations, beam design, support with building regulations, or advice for an extension or loft conversion, we’re here to help. Send us your details and we’ll come back to you with a practical next step.