Conference table with financial records and exhibit materials

Expert witness

Delay Damages

Delay-related cost analysis examines claimed time-related costs and their relationship to construction events and conditions. Sources, assumptions and the scope of the inquiry vary with the project record.

Delay-related cost questions may involve time-related resources, overhead, escalation, acceleration and other categories. Analysts may examine recorded costs, contributing conditions, administrative records and assumptions; schedule and cost work may proceed together or in stages.

Damages analysis may examine attribution, periods, cost categories, assumptions and whether delays were concurrent on the critical path. How concurrent delay is treated depends on the contract and applicable law, which are for counsel and the tribunal. The scope and available information affect which questions can be evaluated.

Site establishment and temporary facilities on a prolonged construction project

Possible assignment considerations

In practice

  1. 01

    Explain the event and period assumptions

    Identify the events or periods assumed in the cost analysis and explain their support. Alternative scenarios can be evaluated while time effects remain disputed.

  2. 02

    Identify time-related cost

    Separate resources incurred because of duration from the cost of performing the work itself.

  3. 03

    Address overhead openly

    Set out the basis and assumptions behind any home office overhead element rather than embedding them in a calculation.

  4. 04

    Deal with mitigation and contribution

    Account for costs that would have arisen anyway, that reasonable steps would have avoided, or that the claiming party caused.

Considerations and limitations

Questions and limitations to consider

Damages detached from the analysis

What supports the period and resource assumptions used in the cost analysis?

Overhead as arithmetic

Presenting a formula result without exposing the assumptions underneath it.

Ignoring the claimant's own contribution

Leaving contribution and mitigation to be raised by the other side, which damages the credibility of the whole.

Delay Damages

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