Veritas Structures

Structural Root Cause Analysis

The diagnosis behind the defect: why it happened, what is contributing, and what actually fixes it.

Root cause analysis answers the question that repeated repairs never resolve: why does this keep happening? Recurring cracking, persistent corrosion, deflection that returns after patching, or water-related deterioration usually have an underlying mechanism that surface repairs do not touch. Root cause analysis isolates that mechanism so the rectification is durable rather than cosmetic.

Veritas Structures root cause analysis brings together the evidence: design review against the original actions and detailing, construction records where available, the observed defect pattern, non-destructive testing, and laboratory results such as chloride profiling, carbonation depth, and petrographic analysis. We test competing hypotheses against the evidence rather than assuming the most visible cause.

Typical mechanisms include chloride-induced or carbonation-induced reinforcement corrosion, inadequate cover, restrained shrinkage and thermal movement, overload or load-path changes, fatigue, alkali-silica reaction, and detailing or construction defects. The analysis distinguishes the primary cause from contributing factors so resources target what matters.

The deliverable is an engineer-endorsed root cause report with the diagnosis, the supporting evidence, and a rectification strategy that addresses the cause. The report and all supporting data are anchored to the Veritas Ledger, creating a defensible record for owners, insurers, and any dispute or warranty proceedings.

Deliverables

What's Included

Design and detailing review against original actions
Defect-pattern and distress mapping
Non-destructive testing programme
Chloride profiling and carbonation analysis
Petrographic and laboratory investigation
Hypothesis testing of competing mechanisms
Primary cause vs contributing factor separation
Rectification strategy addressing the cause
Evidence package for insurance and dispute use
Engineer-endorsed diagnostic report

Methodology

Our Process

1

Evidence Assembly

We collate the defect history, prior repairs, original design and detailing, and any construction records. Understanding what was designed, what was built, and what has been tried frames the analysis.

2

Targeted Testing

A testing programme is designed to discriminate between candidate mechanisms, for example chloride profiling to confirm chloride-induced corrosion, or carbonation testing to confirm carbonation-induced corrosion. Sampling is targeted and representative.

3

Hypothesis Testing

Candidate mechanisms are tested against the assembled evidence. Mechanisms that the evidence does not support are eliminated. The primary cause and contributing factors are isolated.

4

Rectification Strategy

A rectification strategy is developed that addresses the primary cause, not just the symptom, with reference to EN 1504 and HB 84 repair principles and indicative costs.

5

Reporting and Anchoring

An engineer-endorsed root cause report is issued with the diagnosis, evidence, and strategy. The report and supporting data are anchored to the Veritas Ledger as a permanent, verifiable record.

Technical Data

Technical Specifications

Common mechanismsChloride/carbonation corrosion, shrinkage, overload, ASR, fatigue
Key testsChloride profile, carbonation, petrography, half-cell
OutputPrimary cause + contributing factors + rectification strategy
Engineer endorsementRPEQ, CPEng, NER registered engineers
DeliverableRoot cause report + evidence, anchored to Veritas Ledger
CoverageAll Australian states and territories

Compliance

Australian Standards

AS 3600:2018

Concrete Structures

Reference for evaluating whether observed distress reflects design, durability, or capacity shortfalls in concrete.

EN 1504

Concrete Protection and Repair

Defines the repair principles and methods selected once the mechanism is understood.

HB 84

Guide to Concrete Repair and Protection

Practical guidance linking deterioration mechanisms to appropriate, durable repair strategies.

AS 1170 series

Structural Design Actions

Used to test overload and load-path-change hypotheses against the actions the structure was designed for.

FAQ

Frequently Asked Questions

Why do repairs keep failing without root cause analysis?

Because the repair treats the symptom while the mechanism continues. Patching spalled concrete without addressing chloride contamination, for example, leads to corrosion resuming around the patch (the incipient-anode or ring-anode effect). Root cause analysis identifies the active mechanism so the rectification, whether that is chloride extraction, cathodic protection, cover replacement, or load correction, actually stops the deterioration rather than relocating it.

How do you tell the primary cause from contributing factors?

By testing each candidate mechanism against the physical evidence. Multiple factors are often present, for example low cover plus a chloride-laden environment plus restrained shrinkage. The analysis weighs which factor is driving the observed distress and which are secondary, so rectification resources are spent on the mechanism that controls the outcome rather than spread thinly across every possible contributor.

Is root cause analysis useful for an insurance claim or dispute?

Yes. A documented, evidence-based diagnosis is often decisive in claims and disputes because it establishes causation, which is the central question in most building defect matters. Our reports are engineer-endorsed, the evidence chain is documented, and the record is anchored to the Veritas Ledger so its authenticity and timing can be independently verified. This is valuable in QCAT, NCAT, and court proceedings.

Can you do root cause analysis on a steel structure?

Yes. While many root cause engagements involve concrete durability, the same evidence-based approach applies to steel: fatigue cracking at connections, corrosion from coating breakdown or detailing that traps water, overstress from load-path changes, or fabrication and erection defects. The analysis identifies which mechanism is driving the distress and the strategy that addresses it.

Coverage

Available Across Australia

We deliver root cause services in all major Australian cities. Select a location for city-specific information.

Sectors

Industries We Serve

Our root cause services are tailored to the specific requirements of each sector.

Get started with root cause

Contact our team for a scope discussion and quote. We respond within one business day.