Carpenter Red Seal Exam Prep · Question
A builder is constructing a concrete foundation wall that will be backfilled. To protect the foundation from moisture, what type of membrane is typically applied to the exterior face before backfilling?
Self-adhering asphaltic or rubberized asphalt membranes are commonly used as dampproofing or waterproofing on foundation walls to prevent moisture penetration f
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Question: A builder is constructing a concrete foundation wall that will be backfilled. To protect the foundation from moisture, what type of membrane is typically applied to the exterior face before backfilling?
Answer options:
- 6 mil (0.15 mm) polyethylene sheet ✅ Self-adhering asphaltic membrane
- Perforated drainage tile
- Fibreglass reinforced paper (building paper)
Correct answer: Self-adhering asphaltic membrane
Explanation: Self-adhering asphaltic or rubberized asphalt membranes are commonly used as dampproofing or waterproofing on foundation walls to prevent moisture penetration from the soil. Perforated drainage tile is for water collection and diversion.
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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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