The volume of concrete mixer per batch shall not exceed the mixer's nominal capacity, except for an overload of how many percent?

The volume of concrete mix per batch is critical to maintaining the quality and integrity of the concrete. The nominal capacity of a concrete mixer is designed to ensure that all components are mixed uniformly and effectively. Allowing a specified overload percentage ensures flexibility in operations while still adhering to safety and performance standards.

In this case, a 10% overload is permissible, which allows for a slight increase in the total volume mixed without significantly impacting the mixer’s performance or risking mechanical failures. This percentage is often based on practical experience within the industry, balancing the need for additional capacity during busy periods against the potential risks of overloading, such as inadequate mixing or equipment wear.

Understanding the acceptable overload limit is essential for engineers to ensure that they are operating within safe parameters. By adhering to this guideline, materials engineers can optimize productivity while still assuring that the concrete produced meets quality standards and specifications.