A delay analysis chart comparing planned and actual timelines across a construction schedule

For contractors

Delay Analysis & Project Progress Monitoring

Delay assignments may examine events, their relationship to completion and the relevant contractual context. The scope and sequence of those inquiries depend on the questions presented and the available evidence.

An analysis may consider critical and non-critical work, available float, whether delays were concurrent on the critical path, and relevant contract provisions. Their significance depends on the question, records and selected approach. How concurrent delay is treated depends on the contract and applicable law, which are for counsel and the tribunal.

The inquiry may compare schedules with daily reports, correspondence, photographs and other evidence. The sources, assumptions and limitations are considered in relation to the questions presented.

A delay assignment may involve timing, causation, completion and relevant contract context. The relationship among those questions depends on the project facts and the scope of the technical inquiry.

Depending on the facts and available records, a delay analysis may use a windows analysis, an as-planned versus as-built analysis, or another forensic schedule analysis methodology described in AACE International Recommended Practice No. 29R-03. The period selection, the treatment of schedule updates, and the method's implementation can affect what a particular analysis represents. The analytical approach and conclusions depend on the assignment, the project facts, the available records and the contract.

Concurrent delays can raise questions about timing, causal effects and contract context. That delays were concurrent on the critical path does not, by itself, resolve questions of entitlement or apportionment.

The explanation and level of technical detail are suited to the purpose of the assignment and its intended audience. Findings identify their basis, assumptions and limitations.

An idle crane above an unfinished concrete structure under an overcast sky

Questions an assignment may address

In practice

  1. 01

    Establish what the records support

    Assess the baseline, the updates and the contemporaneous documents before choosing a method. The evidence determines what analysis is honestly available.

  2. 02

    Identify the events

    What do the records show about the event, its timing, the work affected and the administration of related notices or changes?

  3. 03

    Test the effect on completion

    Examine each event's effect using an approach suited to the question, and state the time perspective, evidence and key assumptions.

  4. 04

    Address concurrency directly

    Where delays were concurrent on the critical path, set out each delay's effect on completion and the records it rests on.

Considerations and limitations

Questions and limitations to consider

Method chosen for the answer

A methodology whose supporting basis, assumptions or limitations are not explained in relation to the assigned questions.

Reconstruction without stated support

An unexplained reconstruction of the work path.

Concurrency asserted, not demonstrated

Treating concurrent timing on the calendar as enough, by itself, to explain how events and their effects relate.

Delay Analysis & Project Progress Monitoring

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