Why is joist bridging not simply cosmetic?
Correct Answer
D) It provides lateral stability to the joist system
Joist bridging is a stability component, not a finish item.
Why This Is the Correct Answer
Joist bridging is a stability component, not a finish item.
Why the Other Options Are Wrong
Option A: Use joist bridging function to be only a paint guide
Choice A (It is only a paint guide) is rejected because it tries to bypass the Joist bridging function checkpoint.
Option B: Use joist bridging function to replace anchor rods
In metals work, It replaces anchor rods is the wrong selection for Joist bridging function: it treats Joist bridging function as optional.
Option C: Use joist bridging function to waterproof the roof
The trap in C is It waterproofs the roof. That selection is wrong because the option shifts to a different trade task; the tested Joist bridging function function or field correction is It provides lateral stability to the joist system; Joist bridging contributes to lateral stability.
Memory Technique
Use joist bridging function as the label and It provides lateral stability to the joist system as the definition to recall under pressure.
Reference Hint
Open Steel Construction Manual, 15th Ed.; Steel Deck Institute and Steel Joist Institute standard practice; use the index entry or section for "Joist bridging concept" to confirm that Joist bridging is a stability component, not a finish item.
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