Which of the following items would generally not be included on plumbing drawings?

Plumbing drawings serve as essential tools in the design and installation of plumbing systems, conveying critical information about the structure and layout. Dimensions are critical for ensuring that components fit properly within a given space, allowing plumbers to understand the relationships between various fixtures and piping systems.

However, while dimensions are often included in architectural or engineering drawings to aid in construction, the specific task of the plumbing drawings focuses more on the system itself, detailing the types of pipes, their sizes, and where they connect to fixtures instead of giving overall dimensions. In many cases, the dimensions are provided in other related drawings, or they may be implied in the planning and layout, meaning that plumbing drawings might prioritize items like pipe sizes, material specifications, and fixture locations over explicit dimensions. Thus, dimensions may often be omitted from plumbing drawings, adhering to the emphasis on the technical aspects of plumbing installation rather than the overall construction measurements.