The work plan must account for this condition: the controlling field constraint is that sealant depth and bond-break control are needed. Which joint accessory is most suitable?
Correct Answer
D) Select backer rod
backer rod best matches the stated condition. The other choices are real construction options in the same family, but they fit different field conditions.
Why This Is the Correct Answer
backer rod best matches the stated condition. The other choices are real construction options in the same family, but they fit different field conditions.
Why the Other Options Are Wrong
Option A: Select sidewall primer only
Select sidewall primer only puts the item in the wrong financial bucket, timing, base, or comparison for sealant joint backing.
Option B: Select tooled sealant without backing
Select tooled sealant without backing puts the item in the wrong financial bucket, timing, base, or comparison for sealant joint backing.
Option C: Select rigid shim strip
Select rigid shim strip puts the item in the wrong financial bucket, timing, base, or comparison for sealant joint backing.
Memory Technique
Controlling and condition point to different ledger roads for Foreman Selecting.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Joint protection materials; backer rod and sealant installation; verify the construction method, material selection, equipment choice, or work sequence that fits the field condition.
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