Carpenter Red Seal Exam Prep · Question
What is the primary objective of a 'backfill' operation around a foundation?
Backfill serves multiple purposes: it stabilizes the foundation walls by counteracting soil pressure, and when properly graded, it directs surface water away fr
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Question: What is the primary objective of a 'backfill' operation around a foundation?
Answer options: ✅ To stabilize the foundation and provide proper drainage away from the structure.
- To insulate the basement walls against heat loss.
- To support the formwork for the next concrete pour.
- To create a level area for landscaping.
Correct answer: To stabilize the foundation and provide proper drainage away from the structure.
Explanation: Backfill serves multiple purposes: it stabilizes the foundation walls by counteracting soil pressure, and when properly graded, it directs surface water away from the foundation, preventing hydrostatic pressure buildup.
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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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