Red Seal Carpenter Practice Exam: National Building Code (NBC) & Framing Guide
Red Seal Carpenter Examination Prep
The Red Seal Carpenter exam tests residential and commercial construction principles ranging from concrete footings and formwork to complex hip/valley roof rafter calculations and interior finish installation compliant with the National Building Code of Canada (NBC) Part 9.
Exam Content Breakdown
- Common Occupational Skills (10%): Layout math, transit/level operation, and safety standards.
- Foundations & Concrete (18%): Footing sizing, formwork bracing, and rebar placement.
- Framing (42%): Floor joist spans, wall assembly, roof truss placement, and rafter cut geometry.
- Exterior & Interior Finish (20%): Rainscreen detailing, stair rise/run calculations, and door hardware installation.
- Renovations & Building Science (10%): Vapor barrier continuity, insulation RSI values, and structural underpinning.
Sample Practice Question & Solution
Question 1: What is the maximum unit rise allowed for a private interior residential stairway under NBC Part 9?
A) 180 mm (7 in)
B) 200 mm (7-7/8 in)
C) 210 mm (8-1/4 in)
D) 230 mm (9 in)
Correct Answer: B) 200 mm (7-7/8 in)
Explanation: Under NBC 9.8.4.1, maximum unit rise for residential stairs is 200 mm, with a minimum unit run of 210 mm.
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