Calculating the As-Built Critical Path Procedures

This technical report outlines the procedures for calculating the as-built critical path of a project schedule. It emphasizes the importance of developing As-Built Calculation Schedules for relevant schedule analysis periods. The report details the process of verifying the accuracy of the as-built schedule by reviewing contemporaneous project records to confirm actual dates. It also discusses the conversion of as-planned logic to as-built logic, highlighting that work activities may have been performed out-of-sequence. Guidelines are provided for rectifying out-of-sequence logic and adjusting the as-built schedule logic to accurately reflect actual work sequences. The report stresses the necessity of determining driving predecessor relationships to avoid subjective assessments in the calculation of the as-built critical path. Furthermore, it addresses the significance of documenting logic revisions and ensuring that the as-built critical path is accurately calculated to support schedule delay claims and forensic schedule analysis.