As-Planned vs As-Built is one of the simplest delay analysis methodologies. It compares the planned programme with the actual dates to identify activities that took longer than planned and quantify the overall project delay.
While straightforward, this method has significant limitations: it does not account for the dynamic nature of the critical path, concurrent delays, or the actual sequence of work. It is most appropriate for simple projects with clear, linear delay events.
The method is generally not recommended for complex claims or disputes, as it does not demonstrate cause and effect between specific delay events and the resulting project delay. However, it can be useful as a preliminary assessment or where programme records are limited.