Carpenter Red Seal Exam Prep · Question
A multi-storey residential building requires 300 mm deep glulam beams for floor support. The design engineer specifies a maximum deflection limit of L/360 for live loads. If a specific glulam beam has an effective span (L) of 7.2 metres, what is the maximum allowable live load deflection in millimetres?
The maximum allowable deflection is L/360. Convert the span to millimetres: 7.2 m = 7200 mm. Then, 7200 mm / 360 = 20 mm. This calculation is critical for struc
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Question: A multi-storey residential building requires 300 mm deep glulam beams for floor support. The design engineer specifies a maximum deflection limit of L/360 for live loads. If a specific glulam beam has an effective span (L) of 7.2 metres, what is the maximum allowable live load deflection in millimetres?
Answer options: ✅ 20 mm
- 15 mm
- 25 mm
- 18 mm
Correct answer: 20 mm
Explanation: The maximum allowable deflection is L/360. Convert the span to millimetres: 7.2 m = 7200 mm. Then, 7200 mm / 360 = 20 mm. This calculation is critical for structural integrity.
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