Carpenter Red Seal Exam Prep · Question
What is the primary factor that often governs the maximum span of floor joists for residential construction, especially for longer spans?
For residential floor joists, deflection due to live loads (typically limited to L/360 or L/480 for total load) is almost always the governing factor for maximu
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Question: What is the primary factor that often governs the maximum span of floor joists for residential construction, especially for longer spans?
Answer options: ✅ Deflection limits (e.g., L/360 for live load)
- Shear strength of the wood
- Crushing strength at bearing points
- Nail withdrawal resistance for subfloor
Correct answer: Deflection limits (e.g., L/360 for live load)
Explanation: For residential floor joists, deflection due to live loads (typically limited to L/360 or L/480 for total load) is almost always the governing factor for maximum span, preventing bouncy floors, as per NBC guidelines.
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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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