Carpenter Red Seal Exam Prep · Question
During concrete placement for deep walls, what is an acceptable method to minimize segregation and reduce pressure on formwork?
Using a tremie pipe or elephant trunk allows concrete to be placed directly at the bottom of deep forms, minimizing the drop height. This reduces segregation of
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Question: During concrete placement for deep walls, what is an acceptable method to minimize segregation and reduce pressure on formwork?
Answer options:
- Pouring the concrete rapidly from a high elevation. ✅ Using a concrete pump with a tremie pipe or elephant trunk.
- Adding excessive water to the concrete mix for increased flowability.
- Placing large rocks at the bottom of the forms as a filler.
Correct answer: Using a concrete pump with a tremie pipe or elephant trunk.
Explanation: Using a tremie pipe or elephant trunk allows concrete to be placed directly at the bottom of deep forms, minimizing the drop height. This reduces segregation of aggregates and lessens the impact pressure on the formwork.
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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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