Florida DOT Concrete Batchman/Operator Practice Exam

What is the minimum sampling frequency for each source of coarse and fine aggregate when producing FDOT concrete?

1. Every week

2. Every fifteen days

3. Thirty days

4. Every month

The correct answer is: Thirty days

The minimum sampling frequency for each source of coarse and fine aggregate when producing FDOT concrete is every thirty days. This requirement is established to ensure the quality and consistency of the aggregates being used in the concrete mix. Regular sampling allows for the monitoring of material characteristics such as gradation, moisture content, and contamination, which can significantly affect the performance of the final concrete product. By sampling every thirty days, a balance is maintained between quality assurance and practical logistics, making it feasible to continuously produce high-quality concrete while adhering to regulations. This frequency supports the Florida Department of Transportation's standards for maintaining structural integrity and durability in concrete applications.