What is primarily documented in as-fitted plans?

As-fitted plans play a critical role in the construction and engineering fields as they accurately reflect the actual configurations of installed systems. These plans are created after the installation process is complete, documenting how systems fit into the building as opposed to how they were initially designed or proposed in theoretical layouts.

By providing detailed drawings and specifications of the installed systems, as-fitted plans ensure that all modifications and specific installation practices are captured and made available for reference. This documentation is invaluable for future maintenance, troubleshooting, and any necessary alterations to the building systems since it allows service technicians and engineers to understand exactly what is in place.

The focus on installed system configurations illustrates the shift from theoretical design to practical implementation, underscoring the importance of real-world applications in engineering practices.