Capability
Time Impact Analysis
Insert a delay event into an un-impacted contemporaneous programme to measure time effect — a method assignment, not the EOT submission itself.
C02 — The problem
The technical problem
Time Impact Analysis is a method: take a programme that represents the plan immediately before an event, insert the event’s activities or constraints, and measure the effect on completion or intermediate dates.
It is not the same as preparing an EOT submission, conducting a full retrospective delay-and-disruption analysis, or assessing concurrent delay. Buyers engage TIA when they need a modelled time effect on a defined window, usually to support or test an EOT or a change.
C03 — Engagement
When this capability is needed
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01
Prospective or near-contemporaneous delay
The un-impacted file still exists.
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02
Change time-effect
An instruction’s effect on the critical path must be modelled.
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03
EOT support
The chosen method is TIA and the model must be defensible.
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04
Rebuttal
The other party’s TIA used the wrong update or the wrong event fragment.
C04 — Scope / method
How the work is approached
Construction and documentation of TIA on agreed windows and events. Selection of method versus other delay techniques is part of scoping; the assignment does not cover every delay method as TIA.
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01
Select the un-impacted update
The contemporaneous file immediately before the event, with known defects stated.
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02
Define the event fragment
Activities, durations, and logic that represent the event — not a cartoon.
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03
Insert and recalculate
Effect on the dates that matter.
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04
Explain differences
What drove the impact, including existing near-critical paths.
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05
Document limitations
Missing updates, out-of-sequence progress, and data gaps.
C05 — Outputs
Typical deliverables
| Output | What it contains |
|---|---|
| TIA model | Un-impacted and impacted files for the window. |
| TIA report | Method, event definition, and measured effect. |
| Limitations note | What the contemporaneous record will not support. |
| Exhibits | Extracts suitable for an EOT or rebuttal pack. |
C06 — Decision value
What this work is used to decide
How much time effect to attribute to a defined event in a defined window, for use in EOT, change, or rebuttal. The model does not decide entitlement.
C08 — Project environments
Relevant project environments
C09 — Who we support
Who commonly needs this capability
C10 — Boundaries
Important distinctions
TIA is a modelling method. It is not legal advice and not a guarantee that a tribunal will accept the windows or fragments used.
C11 — Next step
Discuss your project
If this is the technical problem you are facing, talk to Value Construction about the work, the records required, and what you would receive. Outcomes are not guaranteed.