IESL Part III
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ExploreAbout this exam
The Institution of Engineers, Sri Lanka (IESL) is the apex body of engineering professionals in Sri Lanka, incorporated in 1968 by Parliament Act No. 17, and it awards credentials such as Chartered Engineer - CEng (SL) and AMIE (SL) that enable a person to practise as a licensed engineer in the country. IESL also describes itself as the sole credentialing authority of engineering degrees offered in Sri Lanka, including for the internationally recognised Washington Accord. The Part III examination, referred to on the IESL website as the "B Paper Examination", sits within this structure: the site's Education & Evaluation area lists Entry Requirements, Academic Qualification Assessment and Qualifying Examinations, and the charter pathway runs through the Charter Process and Professional Review (PR), including PR details for the CDP and Mentor Route. Candidates are typically engineering graduates or IESL Associate Members progressing from academic qualification assessment toward professional review and, ultimately, the CEng (SL) credential. Preparation should be built around the sectional committee discipline you intend to be assessed in - Agriculture and Plantation Engineering, Building Services Engineering, Civil Engineering, Chemical & Process Engineering, Electrical, Electronics & Telecommunication Engineering, IT and Communication Engineering, or Mechanical Engineering - combined with the published entry requirements, the Professional Review rules, the Code of Ethics and Continuing Professional Development guidance. Note that IESL publishes examination announcements, such as the B Paper Examination March 2026 passed candidates list, but the public site does not set out paper structure, marks or fees. This page is an independent study resource and is not affiliated with, endorsed by, or operated by IESL.
What you'll study
About IESL Part III preparation
What exactly is the IESL Part III (B Paper) examination?
IESL's public site refers to a "B Paper Examination" under its announcements, and lists Qualifying Examinations alongside Academic Qualification Assessment within Education & Evaluation. The site does not publish the paper's syllabus, structure or weighting, so treat any specific claim about its content as unverified and confirm details directly with the IESL secretariat before you plan study.
Who should sit Part III?
It is aimed at candidates moving through IESL's academic and professional pathway toward Chartered Engineer - CEng (SL) status. The relevant prerequisites sit under Entry Requirements, Academic Qualification Assessment and the Professional Review (PR) rules, including the CDP and Mentor Route. Check which route applies to your degree and membership grade before registering.
Which subject areas does it cover?
IESL organises engineering disciplines through seven sectional committees: Agriculture and Plantation Engineering; Building Services Engineering; Civil Engineering; Chemical & Process Engineering; Electrical, Electronics & Telecommunication Engineering; IT and Communication Engineering; and Mechanical Engineering. Prepare within the discipline you are being assessed in rather than spreading effort evenly across all seven.
How long is the exam and how many questions are there?
Not published on the IESL website. No question count, duration, marks or pass mark appears in the public pages, so any figure you see elsewhere may be outdated or invented. Ask the secretariat or your recognised training organisation for the current paper format before building a timed practice schedule.
What is the pass mark, and what happens if I fail?
Neither the passing score nor the retake policy is stated on the public site. Candidates should request the current assessment regulations and any resit conditions in writing from IESL. Do not budget on the assumption of unlimited attempts or a fixed cooling-off period until that is confirmed to you directly.
How much does it cost to sit?
The site lists Membership Enrolment Fees and Membership Fees and Payment Methods, but the Part III examination fee itself is not published there. Confirm the applicable fee, payment channel and closing date with the secretariat, since enrolment and examination charges are separate items and deadlines are usually strict.
How should I order my study?
Start from the published Entry Requirements and Academic Qualification Assessment so you know exactly which topics you are accountable for. Then work through the Professional Review rules and PR details for the CDP and Mentor Route, since those define the standard you are being measured against. Only then drill past-paper-style problems in your discipline.
What are the most common ways candidates lose marks?
Two recurring risks: preparing generically across all disciplines instead of to the sectional committee you are assessed under, and ignoring the professional-practice side. The Code of Ethics, Continuing Professional Development expectations and Professional Review rules are published by IESL and are part of the professional standard you must demonstrate, not optional reading.
Where do I verify anything on this page?
Use iesl.lk directly: About Us, Education & Evaluation, Obtaining Charter, Code of Ethics and the announcements list. This page is an independent study aid and is not affiliated with IESL, so treat the official site and written confirmation from the secretariat as the only authoritative source for rules, dates and fees.