How to Tab the NBC 2020 for the 2026 ExAC

Why tabbing the NBC 2020 wins Section 2 marks

Section 2 (Codes) is the one open-book section on the ExAC, and that changes how you should prepare for it. You are not being asked to recite the National Building Code of Canada from memory. You are being asked to find the right clause, read it correctly, and apply it to a scenario, all under a clock. The candidates who struggle are rarely the ones who do not know the code. They are the ones who know it but cannot find it fast enough, and a few lost minutes per question adds up across a section.

That is the whole case for tabbing. A tabbed NBC 2020 turns a thick reference into a navigation system you can move through by feel. In the post-exam debriefs our team runs with candidates after every sitting, the single most common Section 2 regret is not under-studying the code, it is bringing a clean or badly tabbed copy and burning time flipping pages. The fix is cheap: a few focused hours building a tab set, then using that same copy for every NBC 2020 practice question between now and exam day.

Two facts shape the whole strategy. First, the NBC 2020 and the NECB 2020 are the only references permitted in the room for Section 2, so your tab set has to carry the full navigation load. Second, the exam rewards drilled lookups, not decorated pages. Tabs make the book fast; practice questions make you fast. You need both.

What counts as a permitted tab

Before you tab anything, know what the exam room will accept. Rules are set by the examination committee and confirmed in your sitting instructions, so treat the table below as the working standard and verify the specifics for your sitting. The line that matters most is simple: tabs are for navigation, not for notes.

If a tab carries information, it is a note, and notes are not allowed. If a tab only helps you turn to the right page, it is navigation, and navigation is the point. When you are unsure whether a marking is acceptable, leave it out; a tab set that gets flagged at check-in is worse than no tab set at all. This open-book discipline is the same one that governs every reference decision on the exam, which is why Section 2 rewards preparation over improvisation.

How the NBC 2020 is organised

You cannot tab a book well until you can picture its shape. The NBC 2020 is built in three Divisions, and almost every Section 2 lookup is a move between two of them.

Division A: compliance, objectives, and defined terms

Division A sets out how compliance works and what the code is trying to achieve, and it holds the defined terms. Those definitions decide questions more often than candidates expect, because a scenario can turn entirely on what counts as a major occupancy, a building height, or a fire separation. Tab the defined terms clearly; you will return to them constantly.

Division B: acceptable solutions, the technical Parts

Division B is the bulk of the book and the home of the technical requirements. It is split into Parts, and the two that carry most of the Section 2 weight are Part 3, which covers fire protection, occupant safety, and accessibility for larger and more complex buildings, and Part 9, which covers housing and small buildings on a simpler prescriptive path. Part 4 (structural), Part 5 (environmental separation), and Part 6 (heating, ventilating, and air-conditioning) round out the Parts you are most likely to open.

Division C: administrative provisions

Division C holds the administrative provisions. It matters far less for Section 2 than Divisions A and B, so it needs only a light tab or two. The honest read is that most of your time on exam day lives inside Division B, with Division A close behind to confirm what a defined term actually means.

Which NBC 2020 Parts to tab

Tab by traffic, not by thickness. The goal is to make the Parts and sections you actually reach for stand out, and to let the rest fade into the page edge. The cards below show where the Section 2 lookups concentrate and how heavily to tab each Part.

Notice the two Parts doing the heavy lifting: Part 3 and Part 9. They cover overlapping topics (fire separations, spatial separation, egress) but on different paths for different buildings, and a scenario points you to one or the other based on occupancy, size, and height. The difference is worth understanding cold; the Part 3 versus Part 9 guide walks through how to tell them apart, and the illustrated Part 9 reference is the fastest way to learn the small-buildings path.

A colour-coded tabbing system that works

A good tab set is small, colour-coded, and built once so you can drill it for weeks. Here is the six-step method our team shares with Intern Architects, refined from what actually holds up under time pressure on exam day.

Keep the scheme simple enough to remember without thinking: one colour for fire and egress, one for spatial separation, one for accessibility, one for Part 9, and one or two spares for envelope and energy. The colour does the first half of the navigation, before you have read a single word, and the label does the second half.

The NBC 2020 tab list to copy

Here is the working tab set, grouped by colour. The section numbers are the high-value Section 2 lookups; the colour names are a suggestion, not a rule. Confirm the exact article numbers against your own current copy and your provincial code (for example the OBC, ABC, or BCBC), because numbering can shift between editions and provinces.

Anchor tabs (your spine)

• Division A, Defined Terms (1.4.1.2). The definitions that decide occupancy, building height, major occupancy, and what counts as a fire separation. Your most-used tab.
• Division A, compliance and objectives (Part 1). A light tab on how acceptable solutions and objectives work.
• Division B Part 3, Division B Part 9, and Division C. Divider tabs so you can jump between the two big technical Parts and the administrative provisions.

Colour 1: fire and egress (Part 3)

• 3.1.2 Classification of buildings. Major occupancy Groups A through F.
• 3.1.17 Occupant load. The article and its table.
• 3.2.2 Building size and construction relative to occupancy. The combustible and non-combustible construction requirements and their tables.
• 3.2.5 Firefighting provisions. Access routes, standpipes, and alarm and detection systems.
• 3.3 Safety within floor areas. Corridors and the occupancy-specific subsections.
• 3.4.2 Exits: number, location, and travel distance.
• 3.4.3 Exit width and capacity. With the egress-width table.
• 3.4.6 Stairs, ramps, handrails, and guards in exits.

Colour 2: spatial separation (Part 3)

• 3.2.3 Spatial separation and exposure protection. Limiting distance, exposing building face, and the permitted area of unprotected openings.
• The 3.2.3 tables. Tab the opening-percentage tables directly; they are pure lookup under time pressure.

Colour 3: accessibility and health (Part 3)

• 3.8.2 Where barrier-free design is required.
• 3.8.3 Barrier-free design requirements. Entrances, paths of travel, washrooms, and controls.
• 3.7.2 Plumbing fixtures. Washroom and fixture counts.

Colour 4: housing and small buildings (Part 9)

• 9.10.14 and 9.10.15 Spatial separation and exposing building face. The small-building version, with their opening-percentage tables.
• 9.10.8 and 9.10.9 Fire-resistance ratings and fire separations.
• 9.10.13 Doors, closures, and openings in separations.
• 9.10.19 Smoke alarms and carbon monoxide alarms.
• 9.8 Stairs, ramps, handrails, and guards.
• 9.9 Means of egress. Exits and travel distance for houses and small buildings.
• 9.5 Room and space dimensions. Including ceiling heights.
• 9.7 Windows, doors, and skylights. Including egress windows.

Colour 5: envelope, structure, and energy (lighter)

• Part 5 Environmental separation. Air, vapour, and moisture control.
• 9.25 Heat transfer, air leakage, and condensation. The small-building envelope.
• 9.36 Energy efficiency for housing and small buildings.
• Part 4 Structural design. Loads; a light tab if your section touches structure.
• Part 6 Heating, ventilating, and air-conditioning. Ventilation requirements.

NECB 2020 companion tabs

• Building envelope. Assembly values, fenestration, and thermal bridging.
• Lighting. Interior and exterior power allowances.
• HVAC and service water heating. The mechanical requirements you drill.
• The compliance paths. Prescriptive, trade-off, and performance; tab the one you use most.

Keep the whole set to roughly 25 to 40 tabs, label each one with the section number or topic only, and use different colours for Part 3 and Part 9 so a large-building rule never gets answered from the small-building path. The numbers above are a starting point; your final set should match the topics your Section 2 practice questions actually send you to.

Tabbing the NECB 2020 too

The NECB 2020 is the second book you are allowed in the Section 2 room, alongside the NBC, and it deserves its own small tab set. The National Energy Code of Canada for Buildings is thinner than the NBC, so a lighter set works: tab the building envelope requirements, the prescriptive path, and the lighting and HVAC sections you have actually drilled.

Treat the NECB as a companion to the NBC tab set, not an afterthought you flag the night before. Energy questions reward fast navigation exactly as much as code questions do, and a candidate who can move through the NBC but stalls in the NECB has only solved half the problem. The NECB 2020 guide and the NECB topic notes cover what to prioritise, and pairing them with envelope practice keeps the energy lookups sharp.

Common tabbing mistakes that cost time

Every ExAC cycle, the same tabbing mistakes surface in the weeks after a sitting. Most are easy to avoid once you have seen them named.

• Over-tabbing. A hundred tabs is not a navigation system, it is a wall of colour. When everything is flagged, nothing stands out, and you waste time reading tab labels instead of code. Keep the set to roughly 25 to 40 deliberate tabs.
• Tabbing topics you never drilled. A tab on a section you have never opened in practice is a tab you will not trust on exam day. Tab where your practice questions actually send you, and let the unused Parts stay quiet.
• Writing on the tabs. A section number or topic name is fine; a formula, a summary, or a reminder is a note, and notes can get the whole copy refused at check-in. Put memory work into questions, not onto the page edge.
• Confusing Part 3 and Part 9. The fastest way to lose a Section 2 mark is to answer a large-building question from the small-buildings path. Colour-code Part 3 and Part 9 differently so your hand never crosses them.
• Building the tab set too late. Tabs you place the night before are tabs you have never used. Build the set four to six weeks out and drill on that exact copy, so the navigation is muscle memory by exam day.

The thread running through all five is the same: tabs are a tool you rehearse, not decoration you add at the end. The candidates who walk into Section 2 calm are the ones whose hands already know the book.

Drill your tabs before exam day

This is where the NBC tab set sits in the wider Examitect approach. We treat the NBC 2020 and the NECB 2020 as tab-and-drill references: not read cover to cover like CHOP and CHING, but tabbed and practised until the lookups are reflex. Reading the code front to back builds recognition; timed questions on a tabbed copy build the recall and speed Section 2 actually scores.

So make the tab set part of how you practise from day one, not a final step. Every time you run an NBC question, run it on your tabbed copy: read the scenario, decide whether it is a Part 3 or Part 9 problem, jump to the section by colour, confirm against the defined terms in Division A, and answer. Review only the questions you miss, and re-tab anything you reached for and could not find. By exam day, the tab set and your judgement will have grown together.

One closing reassurance: Section 2 looks intimidating because the book is thick, but a tabbed NBC turns thickness into structure. Tab it once, drill it often, and the open book stops being a liability and starts being the advantage it is meant to be.