Tag: engineering change instruction

Apr 24

Variation Claims: FIDIC Procedure, Notice and Costs | E-Basel

By Basel Al Najjar in Construction Claims
April 24, 2026

Claims · Contract Changes Variation Claims Under Construction Contracts How to identify, notify, and claim for variations under FIDIC. Notice requirements, cost assessment, and the interplay with other claim routes. 6 min read · Updated 24/04/2026 By Basel Al Najjar Civil Engineering Consultant, DIAC Arbitrator, Tribunal Chairman and Accredited Expert Witness. Over two decades advising …

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About the Expert

Basel Al Najjar

Civil Engineering Consultant · Accredited Expert Witness
Arbitrator · Senior Project Manager

Specialising in construction claims, FIDIC contracts, and dispute resolution across the UAE. Acting as Arbitrator, Tribunal Chairman, and Independent Expert in high-value, multi-party disputes.

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⏱ FIDIC Notice Deadline Calculator

Select your contract edition and book, choose the relevant clause, then enter the date you became aware of the triggering event. All applicable notice deadlines will be calculated instantly.

FIDIC Edition

Contract Type

Trigger Event / Clause

Date of Awareness / Event Occurrence

The date you became aware, or should have become aware, of the event giving rise to the claim or notice obligation.

Key Notice Periods at a Glance

1999 editions — Cl. 20.1 Notice: 28 days · Detailed Claim: 42 days
2017 editions — Cl. 20.2 Notice: 28 days · Detailed Claim: 84 days
Unforeseeable Conditions (Cl. 4.12): Notice as soon as practicable
Defects Notification Period: 365 days from Taking-Over Certificate

Deadline Summary

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Tag: engineering change instruction

Variation Claims: FIDIC Procedure, Notice and Costs | E-Basel

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