1. About the RBQ 5.1 contractor licence exam

The RBQ sub-category 5.1 exam is the theoretical examination administered by the Régie du bâtiment du Québec for candidates seeking to act as qualified representative (répondant) for a contractor licence covering metal frameworks, steel structural elements, and the assembly of frameworks made of prefabricated concrete elements. The licence also authorizes the work of sub-category 5.2 (Annex III), plus similar or related construction work.

The exam is offered in French and English in multiple-choice format, lasts 3 hours, and the passing grade is 60%. It is built around four official modules covering steel concepts, the regulatory framework, plans and specifications, and the standards for executing steel framework and precast concrete assembly.

2. Exam structure at a glance

The RBQ does not publish a percentage weighting per module for this licence. By content volume, Module 4 dominates with 38 skill statements. EC 9 alone (executing steel-structure work) carries 19 skill statements — covering the full erection sequence from material verification through grout placement. The Profil cites National Building Code Part 9 articles directly: 9.4.3 (allowable deflection), 9.17 and 9.23 (small-building member spacing), 9.23.4.3 (maximum beam span supporting dwelling floors).

3. Detailed competency elements

Module 1 — Definitions and types of structures

• EC 1 — Steel terminology and concepts (2 skill statements): creep, camber, deflection, plastic and elastic deformation; allowable deflection ratios (L/240, L/360, L/420).
• EC 2 — Steel characteristics (5 skill statements): lateral-stability components for steel structures; structural steel characteristics (yield strength, ultimate strength, plasticity); common steel grades and their applications (weldable, AT); profile designations W, WWF, S, C, L for beams and columns; galvanizing — purpose and applicable elements.
• EC 3 — Load concepts (4 skill statements): live load, dead load, bearing area; snow/wind/seismic loads; lateral loads (causes and consequences); concentrated vs. uniformly distributed loads.
• EC 4 — Metallic structure characteristics (9 skill statements): structural elements and their functions; stability assemblies; bracing components; structural steel vs. ornamental metals (métaux ouvrés); fabrication tolerances and their impact on the building; rigid-frame vs. braced systems; tie elements (entretoises) for open-web steel joists; metal deck contribution to beam and lateral resistance; column slenderness effects.

Module 2 — Legislative, normative and regulatory framework

• EC 5 — Codes and standards for metal-structure work (5 skill statements): applying parts and sections of the Quebec Construction Code Chapter I — Building 1995; the role of the Canadian Standards Association (CSA); identifying the CSA and other standards (CSA S16.1 for steel, CSA A23.1 for concrete); scope of codes and standards by material and building type; relationship between metal-structure standards and the Quebec Construction Code Chapter I.

Module 3 — Plans and specifications

• EC 6 — Reading drawings and plans (9 skill statements): locating elements on a plan; metal-structure symbols; dimensions and annotations; sections and details; general notes and tables; quantity take-off (métré); erection drawings (plans de montage); shop drawings (dessins d'atelier).
• EC 7 — Reading specification divisions (2 skill statements): divisions and sections for building framework (17-division 1995 system referenced to the 49-division 2004 system); structural steel and metal decking specifications.

Module 4 — Standards and execution of work

• EC 8 — Planning and organizing (11 skill statements): scope boundaries communicated to the general contractor; logical execution sequence; elements supplied by other disciplines but installed by 5.1; interface coordination; project characteristics requiring plans and specs; plan-modification process; climate impact on steel work; maximum equipment weight on a given metal structure; engineer-approved shop and erection drawings; reporting drawing-site divergences to designers; surveying for accurate member positioning.
• EC 9 — Executing steel-structure work (19 skill statements — the largest single EC): verifying delivered material against plans and specs; respecting concrete curing time before installing a bearing on a foundation; verifying that connection design and calculation account for forces, bending moments, and shear shown on plans; protecting steel elements during temporary on-site storage; A325 bolt requirement for higher-grade steel (e.g., W300); temperature effects on steel dimensions and impact on erection; allowable deflection per NBC 9.4.3; maximum spacing between posts, beams, and joists for small buildings per NBC 9.17 and 9.23; surface preparation conditions for welding; maximum beam span supporting dwelling floors per NBC 9.23.4.3; fastening metal deck to the main structure; temporary bracing during erection (importance and method); lateral restraint of beams and joists during erection; maximum dimensions and acceptable locations for beam penetrations; correct anchor bolt positioning; placing open-web steel joists per fabricator-supplied erection drawings; installing temporary bracing during erection; verifying member alignment and column verticality; correctly placing non-shrink grout under column bases.
• EC 10 — Quality control (5 skill statements): quality-control means for structural work; tests and trials on materials; quality-control responsibility allocation; material quality at reception and storage; problem-solving for execution issues.
• EC 11 — Health and safety (3 skill statements): fall-arrest devices per S-2.1 r.4 art. 2.9, 2.10.12, 3.8; safe lifting equipment operation; safe beam-column assembly techniques per S-2.1 r.4 art. 2.12.5.

4. Documents at the exam — mixed-book format

Provided at the exam (open book — 2 documents)

• Code de construction (RLRQ, B-1.1, r.2) — Chapter I, Building 1995
• Code de sécurité pour les travaux de construction (RLRQ, S-2.1, r.4) — Safety code for construction work

Recommended reading only (closed book — 6 documents)

• Loi sur le bâtiment (RLRQ, B-1.1) — Building Act
• Code de sécurité (RLRQ, B-1.1, r.3) — Safety code (in-use buildings)
• Règlement sur la qualification professionnelle des entrepreneurs et des constructeurs-propriétaires (RLRQ, B-1.1, r.9)
• Loi sur la santé et la sécurité du travail (RLRQ, S-2.1) — Act respecting occupational health and safety
• CAN/CSA-S16.1-94 — Limit states design of steel structures
• CAN/CSA-A23.1-00 — Concrete: Constituents and execution of work

Several Quebec documents are available free of charge on publicationsduquebec.gouv.qc.ca. The CSA standards are available from the CSA store.

5. Material provided at the exam

The calculator, ruler, paper and pencil needed for the exam are supplied on site. Only the documents and material handed out by the exam supervisor may be used during the session — personal copies, notes, electronic devices, and additional reference material are not allowed.

6. What makes the RBQ 5.1 exam different

The RBQ 5.1 contractor licence is a dual-material licence. It covers two distinct framework types — metallic (steel) and precast concrete — under one qualification. That dual scope is reflected in the closed-book document set: CSA S16.1 for steel limit-states design, and CSA A23.1 for concrete materials and execution. Both standards anchor the licence's technical foundation and both must be memorized.

The exam is unusual in how much of Module 4 focuses on erection-stage execution — the moment steel members go from horizontal on the ground to vertical in place. EC 9's 19 skill statements walk through this sequence: material verification on delivery, foundation cure time before bearing installation, connection-design verification, A325 bolt requirements for higher-grade steel (W300+), thermal-dimension effects, NBC Part 9 deflection and spacing rules, surface preparation for welding, metal deck fastening, temporary bracing during erection, lateral restraint of beams, beam-penetration rules, anchor bolt positioning, open-web joist placement, member alignment and column verticality, and non-shrink grout under column bases. Half the exam hinges on what can go wrong between fabrication and the structure being stable.

Steel-specific concepts are tested directly in Module 1. The candidate must explain steel profile designations (W, WWF, S, C, L), steel grades (weldable, AT), the plastic vs. elastic behaviour that justifies limit-states design, fabrication tolerances, the distinction between rigid-frame and braced systems, and the contribution of metal deck to beam and lateral resistance. These are vocabulary-heavy, definition-driven questions where a misread of a single term loses a mark.

The licence boundary is interesting too: Module 1 EC 4.4 specifically asks the candidate to distinguish structural steel from ornamental metals (métaux ouvrés) — because ornamental metalwork is a different trade. The 5.1 contractor must know exactly where their licence stops.

7. Recommended preparation strategy

1. Master CSA S16.1 closed book. Limit-states design fundamentals, member capacities, connection design, bolt grades (A325 in particular for higher-grade steel like W300), weld procedure requirements, erection tolerances. This is the steel anchor of the entire exam — and it's not on the desk.
2. Master CSA A23.1 for the precast assembly side. Cure time, placement, grouting requirements. Even though the licence is "steel + precast assembly," the concrete side is tested.
3. Memorize the NBC Part 9 articles called out by number. 9.4.3 (allowable deflection), 9.17 (post and column spacing), 9.23 (joist and beam spacing), 9.23.4.3 (maximum beam span supporting dwelling floors). The Profil cites these articles directly — the candidate is expected to know what each says.
4. Master the steel profile vocabulary. W (wide-flange), WWF (welded wide-flange), S (American Standard I-beam), C (channel), L (angle). Practice identifying each by section shape and use case.
5. Memorize the bolt-grade rule. A325 bolts for higher-grade steel (W300 and up). EC 9.5 tests this directly.
6. Anchor preparation around Module 4 (38 skill statements). Walk through the full erection sequence: delivery → storage → foundation cure → setting → connections → temporary bracing → alignment/verticality → grout. EC 9 has 19 statements; reading them all together as a sequence is the most efficient way to retain them.
7. Master temporary bracing. EC 9.12 and 9.17 both reference temporary bracing during erection. This is one of the highest-stakes content blocks — a steel frame without proper temporary bracing collapses before its permanent bracing is installed.
8. Master the S-2.1 r.4 safety articles. 2.9, 2.10.12, 3.8 (fall protection), and especially 2.12.5 (safe beam-column assembly technique). These are on the desk during the exam — practice locating them quickly.
9. Take at least two full mock exams under real conditions (3 hours, only the Quebec Construction Code Chapter I and S-2.1 r.4 on the desk, single sitting) before scheduling the real exam.
10. Review every wrong answer. The Prof-RBQ.ca platform shows the reasoning behind each correct answer — read every explanation, even on questions you got right.

8. Why Prof-RBQ.ca for the RBQ 5.1 exam

• Aligned with the official RBQ structure — content mapped one-to-one to the four modules and their 11 competency elements, with extra depth on Module 4 (38 skill statements) and the NBC Part 9 articles the Profil cites by number.
• Dual-material training — separate study tracks for CSA S16.1 (steel limit-states design) and CSA A23.1 (concrete), since the licence spans both materials.
• Erection-sequence drilling — EC 9's 19 skill statements walked through as a sequence, not isolated facts, so the erection workflow becomes muscle memory.
• Steel vocabulary focus — profile designations (W, WWF, S, C, L), steel grades, plastic vs. elastic behaviour, rigid-frame vs. braced systems — repeated until automatic.
• Closed-book training methodology — flashcards and spaced practice for the 6 closed-book documents, with navigation drills for the two open-book references (Quebec Construction Code Chapter I, S-2.1 r.4).
• Mock exams in RBQ format — multiple choice, 3-hour timing, 60% passing grade — so exam day feels familiar.
• Detailed answer explanations — every question, right or wrong, comes with a written rationale citing the underlying article, code, or standard.
• Bilingual — full course in English and French. The RBQ exam itself is offered in both languages.
• A free section is available so you can try the platform before committing.

Frequently asked questions