Carpenter Red Seal Exam Prep · Question
What is the primary function of a 'strong-back' when incorporated into floor or ceiling framing?
A strong-back is a beam-like assembly often constructed from dimensional lumber and attached perpendicular to and on top of joists. It stiffens the joist system
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Question: What is the primary function of a 'strong-back' when incorporated into floor or ceiling framing?
Answer options:
- To provide lateral bracing against seismic forces ✅ To stiffen joists and reduce deflection over long spans
- To support non-load-bearing partition walls above
- To create a pathway for HVAC ductwork
Correct answer: To stiffen joists and reduce deflection over long spans
Explanation: A strong-back is a beam-like assembly often constructed from dimensional lumber and attached perpendicular to and on top of joists. It stiffens the joist system, helping to reduce bounce and deflection over longer spans.
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- When interpreting a foundation plan, a dashed line with 'P. WALL' typically represents which of the following?
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