Who originates the Concrete Aggregate Control Charts?

The originator of Concrete Aggregate Control Charts is the contractor. This is because the contractor is responsible for the sourcing, handling, and placement of aggregate materials used in concrete. They play a crucial role in ensuring that the aggregate quality meets the specifications outlined in project guidelines and standards.

In creating the control charts, the contractor monitors the gradation, moisture content, and other characteristics of the aggregates over time to ensure that they remain consistent and within acceptable limits. This process involves sampling and testing, which are documented on the charts, allowing for ongoing quality control throughout the project. By maintaining these records, the contractor can identify trends and make adjustments as necessary to maintain the desired level of quality in the concrete being produced.

While the DOTD Inspector, concrete supplier, and quality control manager all have key roles in monitoring and ensuring quality, it is ultimately the contractor who initiates and maintains the Concrete Aggregate Control Charts based on the materials they provide and the standards they must uphold.