Is TIA accepted in arbitration?

Yes. AACE 52R-06 is widely cited by tribunals, and TIA is one of the AACE-recognised forensic schedule analysis methods. The credibility of any TIA, however, rests on the quality of the contemporaneous schedule.

Which calculators on PMMilestone.org apply to Time Impact Analysis?

For Time Impact Analysis, the most relevant tools on the flagship platform are the Schedule Health Checker (DCMA 14-point) and the EVM Calculator for delay attribution. They reproduce the formulas referenced in this entry against your own project data.

What is a common misconception about Time Impact Analysis?

That float ownership is settled by the contract. In practice, contemporaneous schedule quality, baseline integrity and the windows analysis methodology determine delay attribution far more than the float-ownership clause. The Schedule Health Checker and a clean critical-path baseline usually decide the case.

Which related encyclopedia entries should I read alongside Time Impact Analysis?

Read DCMA 14-point Assessment and Critical Path Method for the forensic baseline. The full A–Z is available in the PMMilestone Encyclopedia, and quick one-line definitions live in the PM Glossary on the flagship platform.

How does Dr. Hassan Eliwa's research treat Time Impact Analysis?

Dr. Hassan Eliwa's research focuses on owner-side project controls, schedule integrity and forensic delay analysis on capital construction and power programmes. Time Impact Analysis is treated through that lens — what a planning or controls engineer is expected to do with it on a live project, not its textbook definition alone. See the full research library at PMMilestone Research Articles.

How is Time Impact Analysis defined on PMMilestone Research & Insights?

A prospective delay-analysis technique that models the schedule effect of a specific event using the contemporaneous schedule. For the full treatment, see the definition, principles, applications and related entries above — every encyclopedia entry follows the same research-grade structure.

Forensic · Letter T

Time Impact Analysis

A prospective delay-analysis technique that models the schedule effect of a specific event using the contemporaneous schedule.

By Dr. Hassan Khames Eliwa, PhD · Updated 2025-05-30

Definition

Time Impact Analysis (TIA) is a prospective, modelled delay-analysis technique. A fragnet representing the impact of a specific delay event is inserted into the contemporaneous (most recent updated) CPM schedule at the date the event occurred. The schedule is recalculated and the resulting change in the project completion date is the modelled time impact.

History

TIA is codified by AACE Recommended Practice 52R-06 as Method Implementation Protocol 3.4. It is the preferred technique for evaluating extension-of-time claims while the project is still in progress.

Best Practices

Use the contemporaneous baseline updated to immediately before the delay event.
Insert fragnets with full logic — never as constraint dates.
Run TIA event-by-event so concurrent delays can be isolated.

Common Mistakes

Using a baseline that pre-dates the event by months — the analysis becomes hypothetical.
Bundling multiple events into a single fragnet — concurrency cannot then be assessed.

Frequently Asked Questions

Is TIA accepted in arbitration?
Yes. AACE 52R-06 is widely cited by tribunals, and TIA is one of the AACE-recognised forensic schedule analysis methods. The credibility of any TIA, however, rests on the quality of the contemporaneous schedule.
Which calculators on PMMilestone.org apply to Time Impact Analysis?
For Time Impact Analysis, the most relevant tools on the flagship platform are the Schedule Health Checker (DCMA 14-point) and the EVM Calculator for delay attribution. They reproduce the formulas referenced in this entry against your own project data.
What is a common misconception about Time Impact Analysis?
That float ownership is settled by the contract. In practice, contemporaneous schedule quality, baseline integrity and the windows analysis methodology determine delay attribution far more than the float-ownership clause. The Schedule Health Checker and a clean critical-path baseline usually decide the case.
Which related encyclopedia entries should I read alongside Time Impact Analysis?
Read DCMA 14-point Assessment and Critical Path Method for the forensic baseline. The full A–Z is available in the PMMilestone Encyclopedia, and quick one-line definitions live in the PM Glossary on the flagship platform.
How does Dr. Hassan Eliwa's research treat Time Impact Analysis?
Dr. Hassan Eliwa's research focuses on owner-side project controls, schedule integrity and forensic delay analysis on capital construction and power programmes. Time Impact Analysis is treated through that lens — what a planning or controls engineer is expected to do with it on a live project, not its textbook definition alone. See the full research library at PMMilestone Research Articles.
How is Time Impact Analysis defined on PMMilestone Research & Insights?
A prospective delay-analysis technique that models the schedule effect of a specific event using the contemporaneous schedule. For the full treatment, see the definition, principles, applications and related entries above — every encyclopedia entry follows the same research-grade structure.