Forensic Engineering & Expert Witness Services
Roozbeh Assadian MSc MICE CEng, Associate Member of the Expert Witness Institute. Independent, CPR Part 35–compliant expert opinion on civil, structural, geotechnical and construction disputes, backed by 29 years designing and investigating the structures in question.
About
I am a Chartered Civil Engineer with 29 years of experience across civil, structural and geotechnical design and delivery, including major energy and infrastructure projects for operators such as Shell, Chevron and Kuwait's state oil sector. That background sits behind every report I write: I have specified the connections, checked the drawings and stood on the scaffolding that later end up in dispute.
I now provide independent expert witness services in civil, structural, geotechnical and construction matters — from contractor claim assessments to defect investigation and root-cause analysis — supported by core competency training in UK expert witness practice, report writing and expert discussions through the Expert Witness Institute.
My duty is to the Court, not to the instructing party. Every opinion I sign is one I would defend under cross-examination.
Specialist Field
From original design intent through to site failure, I assess what was specified, what was built, and where responsibility for the gap between the two actually sits.
01 — Investigation
Root-cause analysis of cracking, movement, damp and structural non-compliance, combining site inspection, moisture and thermal survey with drawing review.
02 — Disputes
Technical and contractual scrutiny of contractor claims, scope-of-works interpretation, and drafting of evidence-based responses for legal and commercial teams.
03 — Compliance
Assessment against Building Regulations (including Part 2A, Approved Document K), Eurocodes and industry codes, with clear attribution of responsibility.
04 — Evidence
Moisture meter surveys, thermal imaging, dimensional surveys and welding/connection inspection, documented and cross-referenced against disclosure.
05 — Contracts
Clear, defensible findings on where responsibility lies between client, contractor and prior parties, grounded in the contract and the documentary record.
06 — Reporting
Independent, court-ready reports prepared to the Protocol for the Instruction of Experts in Civil Claims, with duty owed to the Court throughout.
Track Record
Three decades of forensic and design experience on some of the world's largest energy and infrastructure projects — the same rigour is applied to every instruction, regardless of scale.
Illustrative Instruction
To give a sense of the kind of matter I take on, this summarises the shape of a recent instruction without identifying the parties, property, or claim.
Methodology applied on site
Outcome, in general terms
Across the nine disputed items, the evidence — drawings, disclosure, site inspection and instrument readings — pointed predominantly to causes outside the defendant's scope of work: pre-existing conditions left by an earlier contractor, materials and specifications that remained the client's responsibility to supply, and allegations first raised well outside the defect liability period. The report set out, issue by issue, which findings were within the expert's area of expertise and which fell to a different specialism.
How Instructions Proceed
Every matter follows the same disciplined sequence, so instructing solicitors know what to expect and when.
Initial review of the letter of instruction, pleadings and key disclosure to confirm scope, conflicts and the specific questions to be addressed.
On-site investigation with appropriate instruments — moisture metering, thermal imaging, dimensional survey — and photographic record.
Cross-referencing of drawings, correspondence and witness statements against site findings to establish likely causation.
Independent report with Statement of Truth, addressing the instructed questions and ready to withstand cross-examination.
Qualifications & Training
In Their Words
"Roozbeh has demonstrated himself to be a most reliable, diligent and painstaking engineer, who can think through difficult problems and find practical and safe solutions."
Richard Haworth — Structural Engineering Discipline Manager, Wood"Roozbeh showed excellent commercial and contractual understanding, effectively managing the contractor to keep work progressing smoothly, on schedule and within budget."
Andrew J. Feeney — Principal Commercial Manager, WoodInstruction & Enquiries
Get in touch with details of the matter, the property or asset involved, and the questions you need answered. I will confirm availability and any conflict check within two working days.