What is the significance of a north arrow on MEP drawings?

A north arrow on MEP drawings is crucial because it provides a clear indication of the orientation of the building or site in relation to geographic directions. This helps anyone interpreting the drawings to understand how the layout of systems—such as mechanical, electrical, and plumbing—is situated within the context of the real world. Knowing the north direction is essential for accurately assessing sunlight angles, wind patterns, and for coordinating with other site plans or drawings. Orientation is particularly important when planning installations, ensuring compliance with local codes and regulations, and when considering environmental factors that may affect the performance of MEP systems.