Delay Expert credibility depends on thorough evidence collection, impartial analysis, and adherence to recognised standards. Zweite vs PSA demonstrates lessons for delay and quantum experts.

The As-built programme may be the most underrated document on any project for delay experts. A vital record of what really happened, activity by activity, as the project unfolded.

The strongest prolongation claims are not necessarily those supported by the largest volume of records. Delay experts build the strongest claims with an evidentiary pathway that is clear, logical and capable of being tested.

V601 Developments v Probuild confirms that delay and disruption must be proven independently. Disruption techniques can suggest loss, but only a forensic QS and quantum expert can show cause and cost with evidence. 

For quantum experts, CPB Contractors v Transport for NSW completes the progression from Kvaerner to Probuild. It confirms that inefficiency is not a separate claim. It is the cost consequence of change. 

A negative number on a programme is the schedule telling you and experienced delay experts that the project is already behind where it needs to be to hit the contracted date.

True concurrent delay is rarer than the term suggests as delay experts understand. Two genuinely independent causes, each capable on its own of causing the same period of critical delay at the same time.

In construction claims, delay and disruption are different things. Delay is about time. Disruption is about cost. The two demand different evidence from experienced quantum expert witness and delay expert witness. 

Prospective methods are useful during delivery but once the work is complete, those models compete with actual events and, that’s where retrospective methods take precedence.

Melbourne and Brisbane delay and quantum experts examine prolongation costs, Costain v Haswell and what Australian construction disputes can learn from the decision.

The case of John Holland Construction & Engineering Pty Ltd v Kvaerner R J Brown Pty Ltd remains one of the earliest and most important Australian warnings against “rolled-up” or “global” claims for quantum experts to consider.

The decision in Santos Limited v Fluor Australia Pty Ltd does more than explain what disruption is. It shows, in practical terms, how a disruption claim must be analysed and proven. 

Most EOT clauses are read as hurdles but there’s one that is often missed, and it gives the principal or head contractor a discretionary power to grant an EOT even where no valid claim has been made at all.

Construction delay expert insight: why retrospective delay analysis holds up in court, drawing on V601 v Probuild and Kane v Sopov, to show what actually makes a delay claim defensible.

When faced with a construction delay, you may wonder what form of delay analysis is most supported in Australia: prospective or retrospective? Any delay expert worth securing knows where recent judgments sit.

Experience isn't evidence. Santos v Fluor shows why an effective quantum expert witness needs more than industry experience. Courts expect transparent methodology, construction costing expertise and evidence that withstands scrutiny.

Claims for prolongation costs are challenging because entitlement and quantification are rarely the sole matters in dispute. For delay experts and quantum experts, analysis and reports need more.

A widespread misconception in construction project controls holds that a programme has no value until formally approved by the Engineer, Project Manager, or Employer. For forensic delay experts, this is one of the key spaces delays begin.

Fore forensic quantum experts and delay experts, Santos v Fluor is an example of how when you can show the chain of causation with evidence in the contemporaneous record, the claim has a foundation.

Most extension of time disputes are lost in the gap between what happened on site and what got written down. By the time a delay expert opens the file, the outcome is often already half-decided.