FIDIC Contracts: An Introduction for the QS

Introduction

FIDIC — the Fédération Internationale des Ingénieurs-Conseils — is the international federation of consulting engineers, founded in 1913 and headquartered in Geneva. Its suite of standard construction contracts is the global equivalent of JCT and NEC: used on infrastructure, engineering, and building projects worldwide, particularly in the Middle East, Africa, Asia-Pacific, and on multilateral development bank-funded projects. For UK quantity surveyors, FIDIC knowledge is increasingly important — whether working for international contractors, consulting on overseas projects, or advising clients on cross-border procurement. The contract philosophy, the role of the Engineer, and the claims process all differ materially from JCT and NEC, and the QS must understand these differences to operate effectively.

The Main FIDIC Contract Forms

The FIDIC suite (2017 second edition) comprises several standard forms, each designed for a different risk allocation and procurement model.

The Red Book (Conditions of Contract for Construction) is the most widely used form. It is designed for employer-designed works on a traditional design-bid-build basis, with payment by remeasurement against a bill of quantities. The employer carries design risk; the contractor carries execution risk. This is the form closest to a traditional JCT contract and involves the heaviest QS workload — measurement, valuation, interim payments, and final accounts.

The Yellow Book (Conditions of Contract for Plant and Design-Build) shifts design responsibility to the contractor. The contractor designs and builds to meet the employer’s requirements, taking on design risk alongside execution risk. It is commonly used for plant, mechanical, and electrical projects and for design-and-build arrangements.

The Silver Book (Conditions of Contract for EPC/Turnkey Projects) places maximum risk on the contractor, who is responsible for full design, procurement, construction, and commissioning. The contractor even accepts responsibility for the accuracy of the employer’s requirements. It is used for major infrastructure and industrial projects — power stations, water treatment plants, process facilities — where the employer wants a single point of responsibility and a fixed lump sum. QS involvement is more limited, focused on contractual compliance and performance rather than remeasurement.

The Gold Book (Design, Build and Operate) covers DBO and concession arrangements where the contractor designs, builds, and then operates and maintains the facility over a long period — typically 20 years. The Green Book (Short Form of Contract) is a simplified form for smaller, lower-risk projects.

Contract Structure

FIDIC contracts are structured around 20 clauses in the General Conditions, covering the full lifecycle of the contract from definitions and interpretation (Clause 1) through to claims, disputes, and force majeure (Clauses 20–21). The General Conditions are supplemented by Particular Conditions — Part A (Contract Data) containing project-specific variables, and Part B (Special Provisions) containing amendments to the General Conditions. The 2017 edition introduced a clearer separation between these parts, making the contract easier to navigate and reducing the risk of conflicting amendments.

The Engineer

The Engineer (Clause 3) is the central administrative figure in FIDIC Red and Yellow Book contracts — broadly equivalent to JCT’s Contract Administrator or NEC’s Project Manager, but with important differences. The Engineer is appointed by the employer but must make fair determinations when deciding matters between the parties. This dual role — acting for the employer on some matters and impartially on others — creates a tension that does not exist in the same way under JCT (where the CA acts impartially) or NEC (where the PM acts collaboratively for the client).

Under the 2017 edition, the Engineer’s obligation to make fair determinations is strengthened. The Engineer must consult with both parties before making a determination and must give reasons for the decision. If either party disagrees, the matter can be referred to the Dispute Avoidance/Adjudication Board (DAAB). Under the Silver Book, there is no Engineer — the employer administers the contract directly, reflecting the higher risk allocation to the contractor.

Payment Mechanism

FIDIC payment (Clause 14) follows a familiar cycle: the contractor submits a monthly statement, the Engineer issues an interim payment certificate (IPC), and the employer pays within a stated period — typically 56 days from the statement under the 2017 edition. The Red Book uses remeasurement against the BOQ; the Yellow and Silver Books use milestone or lump-sum payment.

Retention is typically 5% of each IPC, capped at a stated limit (often 5–10% of the contract price), with half released at taking over and the remainder at the end of the defects notification period. Advance payment is common on FIDIC projects — the employer provides an upfront payment (often 10–15% of the contract price) secured by an advance payment guarantee, which is then recovered through deductions from IPCs.

Variations

Clause 13 governs variations. The Engineer may instruct variations to the works — changes to quantities, quality, levels, dimensions, sequencing, or additional work. The contractor may also propose value engineering variations that reduce cost or improve efficiency. Valuation follows a hierarchy: applicable rates from the BOQ first, then rates derived from BOQ rates, then reasonable rates where no applicable rate exists, and daywork rates for work that cannot reasonably be valued by measurement.

A key difference from JCT and NEC is that FIDIC variations can include changes to the sequence or timing of works, not just physical scope changes. This broadens the variation mechanism and can have significant time implications that the QS must assess.

Claims

The claims procedure (Clause 20 in the 2017 edition) is one of the most commercially significant aspects of FIDIC for the QS. When the contractor considers itself entitled to additional time or cost, it must give notice to the Engineer within 28 days of becoming aware of the event. This 28-day notice requirement is a condition precedent — failure to notify within the period means the contractor loses its entitlement entirely. This is stricter than JCT (where late notice weakens but does not necessarily bar a claim) and comparable to NEC’s eight-week time bar.

After giving notice, the contractor must submit a fully detailed claim within 84 days (or as agreed), including contemporary records demonstrating the event, its impact, and the additional time and cost claimed. The Engineer then makes a fair determination. If either party disagrees, the matter can be referred to the DAAB.

The 2017 edition significantly improved the claims procedure compared to the 1999 edition — introducing clearer timescales, a defined consultation process, and explicit obligations on the Engineer to respond within stated periods.

Dispute Resolution

FIDIC’s dispute resolution mechanism follows a tiered approach. The first tier is the DAAB (Dispute Avoidance/Adjudication Board) — a standing or ad hoc panel that can be asked to give decisions on disputes. The 2017 edition renamed this from DAB (Dispute Adjudication Board) and expanded its role to include dispute avoidance through informal assistance, not just formal adjudication. DAAB decisions are provisionally binding — they must be complied with immediately, but either party can give notice of dissatisfaction and refer the matter to arbitration.

If the DAAB does not resolve the dispute, the parties must attempt amicable settlement before proceeding to arbitration, typically under ICC (International Chamber of Commerce) rules. This multi-tier process is significantly different from UK domestic contracts, where adjudication under the Construction Act provides a faster, statutory route to interim resolution.

Extensions of Time

Under Clause 8, the contractor is entitled to an extension of time where events for which the employer bears risk cause delay to completion. The contractor must give notice within 28 days (the same condition precedent as for cost claims) and demonstrate the impact on the programme. The Engineer assesses the entitlement and adjusts the Time for Completion accordingly. Concurrent delay is not explicitly addressed in the FIDIC General Conditions and is typically dealt with through the Particular Conditions or by applying the governing law of the contract.

FIDIC vs JCT vs NEC

The three contract families differ in philosophy and approach. JCT is risk-based with balanced allocation and a reactive dispute process; the Contract Administrator acts impartially. NEC is collaborative with proactive risk management through early warnings and compensation events; the Project Manager acts for the client. FIDIC sits between the two — the Engineer has a dual role (employer’s agent and fair determiner), risk allocation varies by book colour, and the claims process is more formal and time-bar driven than JCT but less prospective than NEC.

For the QS, the key practical differences are: FIDIC’s 28-day notice requirement is a hard condition precedent (miss it and the claim is lost); the Engineer’s dual role creates ambiguity that does not exist under JCT or NEC; and the dispute resolution mechanism (DAAB then arbitration) is slower and more formal than UK statutory adjudication.

The QS Role on FIDIC Projects

On Red Book projects, the QS’s role closely mirrors traditional UK practice — measurement and valuation of work, preparing and checking interim payment certificates, assessing variations, and settling the final account. On Yellow and Silver Book projects, the QS’s role shifts towards contractual compliance, cost monitoring, and claims management rather than remeasurement.

Across all forms, claims management is the area where the QS adds most value on FIDIC projects. The 28-day notice requirement, the need for contemporary records, and the detailed claim submission process all demand commercial discipline and contractual awareness. The QS must maintain a claims register, diarise notice deadlines, ensure contemporary records are kept, and prepare claim submissions that comply with Clause 20’s requirements.

Common Issues

Missed notice periods. The 28-day condition precedent catches contractors who are not commercially disciplined. The QS must implement a system for identifying potential claims and issuing protective notices within the deadline.

Inadequate contemporary records. FIDIC requires claims to be supported by contemporary records — not retrospective reconstructions. Daily records, photographs, correspondence, and cost records must be maintained from day one.

Particular Conditions conflicts. Employers frequently amend the FIDIC General Conditions through Particular Conditions Part B. These amendments can fundamentally alter risk allocation, payment terms, or claims procedures. The QS must read the Particular Conditions carefully and understand how they modify the standard form.

Engineer’s dual role. The Engineer’s obligation to make fair determinations can conflict with their role as the employer’s representative. The QS should be prepared for situations where the Engineer’s determination is challenged and the matter proceeds to the DAAB.

Practical Tips

Read the Particular Conditions before the General Conditions. On FIDIC projects, the Particular Conditions often contain the most commercially significant provisions — caps on liability, changes to notice periods, amendments to the claims procedure, and modified risk allocation.

Diarise every notice deadline. The 28-day notice requirement is unforgiving. Maintain a contract events diary and issue protective notices even when the full impact of an event is not yet known.

Keep contemporary records from day one. Claims submitted months later without contemporaneous supporting evidence are difficult to substantiate and easy to challenge.

APC Relevance

FIDIC falls within the RICS APC competencies of Contract Practice (understanding international contract forms, managing claims under FIDIC, administering payments), Procurement and Tendering (advising on when FIDIC is appropriate, comparing FIDIC forms with JCT and NEC), and Dispute Resolution (understanding the DAAB mechanism, amicable settlement, and ICC arbitration). APC candidates working on international projects should be able to explain the main FIDIC forms, describe the claims procedure and its time bars, and discuss the Engineer’s role.

Further Reading on ProQS

Types of Construction Contracts — where FIDIC sits within the broader landscape of domestic and international contract forms.

Contract Administration: JCT vs NEC — a comparison framework that helps contextualise FIDIC’s approach to contract administration.

Dispute Resolution in Construction — how FIDIC’s DAAB and arbitration mechanism compares to UK adjudication and litigation.

Variation Valuation and Claims — how FIDIC’s variation and claims procedures compare to JCT and NEC approaches.

Key References

FIDIC Official — the publisher of FIDIC contracts, with guidance notes, contract summaries, and training resources.

Designing Buildings Wiki: FIDIC Contracts — a comprehensive UK-focused reference covering the FIDIC suite and key contract provisions.

Pinsent Masons — international law firm with extensive guidance on FIDIC contract provisions and dispute resolution.

ICC Dispute Resolution — the International Chamber of Commerce arbitration rules commonly used for FIDIC dispute resolution.

RICS Black Book — professional standards for contract administration on international projects.