Section 3.8 of the NBC: barrier-free path of travel, accessible entrances, washrooms, elevators, and dimensions that make a building usable.
Every Accessibility practice question links back to the reference you'd use in the real exam.
National Building Code of Canada
Universal design and accessibility reference
Examitect drills each of these areas. The list below maps to the question categories you'll see inside.
Why this topic matters. Accessibility questions test whether you'd design a building that's actually usable. Examiners reward candidates who know Section 3.8 cold and who can coordinate barrier-free routes with means of egress.
The NBC requires buildings to be accessible to persons with disabilities. Section 3.8 sets the minimum requirements: which areas need a barrier-free path of travel, how that path is dimensioned, and what accessible features (entrances, washrooms, elevators) are required.
Six areas: where barrier-free paths are required (3.8.2), how those paths are designed (3.8.3), barrier-free entrances, barrier-free washrooms, accessible elevators, and accessible controls and signage.
Minimum barrier-free path width: 1100 mm. Minimum turning space: 1500 mm by 1500 mm. Maximum ramp slope: 1:12. Door clear opening width: 800 mm minimum. Universal washroom dimensions: 1700 mm by 1700 mm minimum. Lever-style hardware is required on accessible doors.
Watch for distractors that apply provincial accessibility standards (e.g., AODA, BC Building Code amendments) as if they were national. The NBC sets the baseline; provincial codes can be stricter. The barrier-free path of travel doesn't need to reach every space, only where 3.8.2 requires.
Placeholder notes. Full Accessibility notes (with diagrams, worked examples, and references) ship with paid access.
Estimated study time. Most candidates spend 8 to 12 hours on Accessibility. Adjust up if you don't see this work in your day job, down if you do.
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Most Group A, B, D, and E buildings. Group C residential occupancies have more limited requirements. Group F (industrial) has narrower requirements still. Section 3.8.1.1 sets the application.
A continuous route through a building, usable by a person with a mobility aid, from the barrier-free entrance to areas required to be barrier-free.
Where washrooms are provided, at least one washroom per floor must be barrier-free, unless an exception in 3.8.2.3 applies.
8 to 12 hours. Section 3.8 is shorter than fire and life safety but heavily tested for design competence.
Topics that pair well with Accessibility prep.