What class of estimate corresponds to a project definition level of 30% to 70%?

A Class 2 Estimate is typically aligned with a project definition level between 30% and 70%. At this stage of project development, sufficient detail is available to produce estimates that reflect a more mature understanding of the project scope, design, and constraints. This level of definition allows cost estimators to utilize more precise data, which enhances the reliability of the estimated costs.

In this context, Class 2 Estimates often rely on historical data and may include some level of engineering analysis to validate assumptions. They are typically used for projects that have advanced past initial feasibility studies and are in the process of defining and refining their scope, thereby enabling stakeholders to make informed decisions about budgeting and funding.

Understanding the appropriate classes of estimates is crucial for accurate project planning and management, as each class varies in scope definition and associated reliability. In this case, the Class 2 Estimate's correlation with a project definition level of 30% to 70% makes it the correct answer.