Carpenter Red Seal Exam Prep · Question
A surveyor has provided control points for a new commercial building layout. One point is labelled 'BM 100.00'. What does 'BM' most likely signify in this context for a carpenter setting foundation forms?
BM stands for Bench Mark, which is a permanent or semi-permanent point of known elevation used as a reference for vertical control across a construction site. '
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Question: A surveyor has provided control points for a new commercial building layout. One point is labelled 'BM 100.00'. What does 'BM' most likely signify in this context for a carpenter setting foundation forms?
Answer options:
- Base Material for the concrete slab.
- Boundary Marker for the property line. ✅ Bench Mark, indicating a vertical elevation reference.
- Building Model, referring to the digital design.
Correct answer: Bench Mark, indicating a vertical elevation reference.
Explanation: BM stands for Bench Mark, which is a permanent or semi-permanent point of known elevation used as a reference for vertical control across a construction site. '100.00' represents its elevation relative to a geodetic datum or an assumed project datum.
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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
- According to the National Building Code of Canada (NBC) 2020, what is the primary consideration for the requir
- Two offset stakes are driven at 2.0 m from the proposed edge of a concrete slab. The first stake is marked 'Cu
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