A concrete pour is scheduled for tomorrow, but the weather forecast shows 40% chance of rain. The quality control plan requires no rain during placement and 24 hours after. What should the contractor do?
Correct Answer
B) Postpone the pour until weather conditions meet quality requirements
Quality control procedures must be followed to ensure structural integrity. Since the quality control plan specifically requires no rain during and 24 hours after placement, the pour should be postponed to meet these requirements.
Why This Is the Correct Answer
Quality control plans are legally binding specifications that must be followed to ensure structural integrity and code compliance. When a quality control plan explicitly requires no rain during placement and for 24 hours after, this becomes a mandatory requirement, not a suggestion. Proceeding with a 40% chance of rain would violate the established quality standards and could result in compromised concrete strength, surface defects, and potential structural issues. The contractor has a professional and legal obligation to postpone the pour until weather conditions meet the specified requirements.
Why the Other Options Are Wrong
Option A: Proceed with the pour as scheduled
Simply covering with plastic does not adequately protect fresh concrete from rain damage, and this approach still violates the specific quality control plan requirement of no rain during placement and 24 hours after.
Option D: Pour concrete and cover with plastic if it rains
Proceeding with the pour despite a 40% chance of rain directly violates the established quality control plan requirements and puts the structural integrity of the concrete at risk.
Memory Technique
QC = Quality Can't be Compromised - when quality control plans specify weather requirements, they must be followed exactly
Reference Hint
Florida Building Code Chapter 19 - Concrete, ACI 305 Hot Weather Concreting, and project specifications for quality control requirements
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