Carpenter Red Seal Exam Prep · Question
When installing exterior doors, what is the 'rough opening' dimension typically calculated from?
The rough opening for doors and windows should always be based on the manufacturer's specified dimensions to ensure proper fit, shimming, and operation.
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Question: When installing exterior doors, what is the 'rough opening' dimension typically calculated from?
Answer options:
- The door frame width plus 1/2 inch on each side for shimming.
- The door slab width plus the width of the jambs.
- The finished door opening dimension. ✅ The manufacturer's specifications for the door unit.
Correct answer: The manufacturer's specifications for the door unit.
Explanation: The rough opening for doors and windows should always be based on the manufacturer's specified dimensions to ensure proper fit, shimming, and operation.
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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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