Carpenter Red Seal Exam Prep · Question
A standard interior door measures 813 mm in width by 2032 mm in height. What are the typical rough opening dimensions a carpenter should frame, accounting for standard shimming and clearance?
A common rough opening rule of thumb for standard doors is to add 25 mm to the width and 25 mm to the height for framing, shimming, and plumb tolerances. So, 81
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Question: A standard interior door measures 813 mm in width by 2032 mm in height. What are the typical rough opening dimensions a carpenter should frame, accounting for standard shimming and clearance?
Answer options:
- 850 mm x 2060 mm
- 813 mm x 2032 mm ✅ 838 mm x 2057 mm
- 864 mm x 2083 mm
Correct answer: 838 mm x 2057 mm
Explanation: A common rough opening rule of thumb for standard doors is to add 25 mm to the width and 25 mm to the height for framing, shimming, and plumb tolerances. So, 813mm + 25mm = 838mm, and 2032mm + 25mm = 2057mm.
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