Overview of a Residential Drainage and Vent System This 3D digital rendering is designed as an educational tool to illustrate how a typical residential plumbing drainage and vent (DWV) system functions. Presented in a cutaway, cross-sectional perspective, the illustration reveals how common household fixtures connect to concealed piping beneath floors and behind walls, offering a clear view of normally hidden components. Core Elements of the System The diagram highlights the main fixtures and pi