Carpenter Red Seal Exam Prep · Question
According to the National Building Code of Canada (NBC) 2020, what is the maximum dimension for the projection of a tread nosing on a stair in a residential building?
The NBC 2020 states that the nosing of un-lipped treads must not project more than 38 mm beyond the face of the riser below. This is to prevent a tripping hazar
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Question: According to the National Building Code of Canada (NBC) 2020, what is the maximum dimension for the projection of a tread nosing on a stair in a residential building?
Answer options:
- 25 mm ✅ 38 mm
- 30 mm
- 19 mm
Correct answer: 38 mm
Explanation: The NBC 2020 states that the nosing of un-lipped treads must not project more than 38 mm beyond the face of the riser below. This is to prevent a tripping hazard while providing adequate tread depth.
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- When interpreting a foundation plan, a dashed line with 'P. WALL' typically represents which of the following?
- A site plan shows contour lines with an interval of 0.5 m. If two adjacent contour lines are labelled 124.0 m
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