Business Details
24 Years
experience
Expert Geotechnical Engineering Solutions Coventry
Established in 2002, Raison Foster Associates is a specialist geotechnical and foundation engineering consultancy based in Coventry. With over 40 years of combined professional experience, we deliver fast, confidential, and high-quality services to the construction industry. Our expertise spans piling, retaining walls, ground improvement, slope stability, and foundation design for projects ranging from small-scale developments to major infrastructure across the UK, Ireland, Channel Islands, and overseas. We utilise state-of-the-art software and adhere strictly to Eurocodes and legacy BSI standards, ensuring technically robust and cost-effective solutions.Our team provides expert witness services, independent design checking, and troubleshooting for complex geotechnical challenges, supporting clients including main contractors, developers, and legal practices. Committed to excellence, we maintain active roles in technical committees and industry standards development through organisations such as the British Geotechnical Association and British Standards Institution.
Services
Geotechnical Engineering
Piling
Retaining Walls
Ground Improvement
Expert Witness Services
Details
- Year established: 2002
Highlights and features
- We have over 40 years of professional geotechnical engineering experience.
- Our team includes Chartered Engineers with specialist highway and rail expertise.
- We provide expert witness services for construction disputes and litigation.
- Our designs comply with Eurocodes and legacy BSI standards of practice.
- We utilise advanced software for finite element analysis and ground movement prediction.
Services
Geotechnical Engineering
We provide comprehensive geotechnical design and analysis services including soil nail stabilisation, slope stability assessment, and foundation design for transport infrastructure. Our engineers utilise advanced finite element analysis software to predict ground movements and settlements, ensuring compliance with Eurocodes and BSI standards. This service supports major construction projects requiring technically rigorous solutions for challenging ground conditions.
Piling
Our piling expertise covers design and execution for congested sites, deep basements, and limited-access bridge structures. We specialise in CFA bored piles, steel driven piles, and tripod piling solutions for infrastructure projects. With over 40 years of experience, we deliver practical, cost-effective pile foundation systems validated through independent checking and ground investigation data interpretation.
Expert Witness Services
We offer expert witness reports and dispute resolution for geotechnical construction claims. Our services include preparing expert opinions on piling disputes, ground improvement failures, and retaining wall litigation. With court-tested experience in adjudication, arbitration, and mediation proceedings, we provide technically sound evidence supported by independent data analysis for legal teams and construction law firms.
Retaining Walls
We design anchored contiguous bored pile retaining walls and remedial solutions for failed structures like gabion walls. Our services include stress analysis for temporary bar anchors and stability assessment for basement excavations. Using numerical analysis tools, we ensure designs meet Eurocode standards while addressing complex site constraints and ground conditions.
Ground Improvement
Our ground improvement solutions address unstable slopes and weak subsoils through soil nailing, compaction, and reinforcement techniques. We provide technical guidance for challenging projects requiring enhanced ground bearing capacity, settlement control, and slope stabilisation. All solutions incorporate rigorous analysis using industry-leading software to ensure long-term performance and compliance with regulatory standards.
People
Chris Raison
Chartered Engineer
Chartered Engineer with over 40 years' experience in geotechnical engineering, specialising in highways and rail projects. Active member of technical committees for the British Geotechnical Association and British Standards Institution, contributing to Eurocode 7 development.
Carol Raison
Director
Key operational director managing client relationships and project delivery. Supports technical teams in providing geotechnical consultancy services to construction industry clients across the UK and internationally.
Questions
What geotechnical services do you offer?
We provide piling, retaining walls, ground improvement, slope stability analysis, foundation design, and expert witness services using Eurocode-compliant methodologies.
Which regions do you operate in?
We work throughout the UK, Ireland, Channel Islands, and on overseas projects requiring specialist geotechnical engineering solutions.
How experienced is your team?
Our engineers have over 40 years of combined experience, including Chartered Engineers who contribute to British Standards development and industry technical committees.
Do you handle legal dispute cases?
Yes, we provide expert witness reports, expert opinions, and court-tested evidence for construction disputes involving piling, retaining walls, and ground improvement failures.
What software tools do you use?
We utilise advanced geotechnical software for finite element analysis, ground movement prediction, and numerical modelling to ensure accurate design validation.
Are your designs code-compliant?
All designs strictly follow Eurocodes and legacy BSI standards, with independent checking services available for third-party validation.
