Which plan would show the layout of plumbing systems in a building?

The plumbing plan is specifically designed to illustrate the layout of plumbing systems within a building. This includes the arrangement of pipes, fixtures, and drainage systems, providing a detailed overview of how the plumbing is organized throughout the structure. It serves as an essential guide for both installation and future maintenance, ensuring that all components function effectively and comply with local building codes.

Architectural plans focus more on the overall design, dimensions, and aesthetic details of the building, rather than specifically detailing the plumbing. Structural plans, on the other hand, are concerned with the framework and support systems of the building, such as beams and columns, and do not address internal plumbing systems. Site plans provide an aerial view of the property, detailing the layout of the building and its relationship to surrounding features but do not include specific plumbing layouts. Therefore, the plumbing plan is the essential document for anyone needing to understand or work on the plumbing systems within the building.