Initial working drawings commonly exclude which of the following?

Initial working drawings typically focus on the overall structure and major design elements, often emphasizing the layout and architectural features of a project. Plumbing plans are usually not included in the very first set of working drawings because they can be more detailed and specialized, addressing the intricate specifics of plumbing systems, which come into play later in the design process.

In contrast, site plans, electrical plans, and foundation plans are essential to the initial phase. Site plans provide critical contextual information regarding the location and orientation of the building, electrical plans detail the layout of the electrical system necessary for functioning, and foundation plans lay out the structural base that supports the entire project. These elements are generally developed early because they are fundamental to the overall project execution.

Therefore, plumbing plans are typically excluded from initial working drawings, as they are more technical and often developed during later stages of the design process when more comprehensive details of the structure and systems are finalized.