What type of drawings may include supply and DWV systems in plumbing?

Isometric drawings are a form of representation that provides a three-dimensional view of plumbing systems, including both supply and drain, waste, and vent (DWV) systems. These drawings illustrate the design and layout of the piping in a way that allows plumbers and other professionals to visualize how the systems interconnect in the actual space, ensuring clarity in installation and maintenance.

Isometric drawings are particularly useful because they maintain the proportions and relationships of the pipes, making it easier for professionals to understand angles, fittings, and flow directions. This is key in plumbing where accurate elevations and positions of pipes are critical for system performance.

While the other drawing types might have their own merits, they do not specifically focus on the isometric representation of supply and DWV systems as effectively as isometric drawings do. Blueprints often provide detailed plans but may not emphasize the 3D aspects seen in isometric views. Sectional views cut through the construction to reveal internal details but do not offer the comprehensive three-dimensional perspective needed for complete understanding of plumbing systems. Elevation drawings, on the other hand, show vertical aspects and heights but also lack the depth perspective that isometric drawings provide.