Why must deck attachment changes be coordinated before installation?
Correct Answer
A) Attachment changes can affect diaphragm or deck performance shown in the design
Deck attachment is tied to design performance; changes require coordination and approval.
Why This Is the Correct Answer
Deck attachment is tied to design performance; changes require coordination and approval.
Why the Other Options Are Wrong
Option B: Use metal deck diaphragm coordination to only change the deck color
The trap in B is They only change the deck color. That selection is wrong because it leaves the work at an informal or incomplete stage, while Metal deck diaphragm coordination requires Attachment changes can affect diaphragm or deck performance shown in the design; Deck attachment changes can affect design performance.
Option C: Use metal deck diaphragm coordination to eliminate concrete finishing
Choice C gives They eliminate concrete finishing. Its specific error: it removes the controlling Metal deck diaphragm coordination requirement instead of meeting it.
Option D: Use metal deck diaphragm coordination to replace the need for structural drawings
Choice D (They replace the need for structural drawings) is rejected because it treats Metal deck diaphragm coordination as optional.
Memory Technique
Attach metal deck diaphragm coordination to a checkpoint: remember the function, then the wording Attachment changes can affect diaphragm or deck performance shown in the design.
Reference Hint
Open Steel Construction Manual, 15th Ed.; Steel Deck Institute and Steel Joist Institute standard practice; use the index entry or section for "Deck diaphragm coordination" to confirm that Deck attachment is tied to design performance; changes require coordination and approval.
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