204 Chapter 8
such as those listed in Figures 8.11A,B,C. The use of these symbols simplifies considerably the prepa-
ration of piping drawings and conserves a considerable amount of time and effort.
In residential applications, plumbing information can often be provided on the floor plans in the form
of symbols for fixtures and notes (for pipe sizes, slope, etc.) for clarification. Other plumbing items and
information to be shown on the floor plans include water connections, floor drains, vent pipes, and sewer
connections. Floor drains are shown in the approximate location on the plans and sections, with notes
indicating the size, type, and slope to drain. Sewer and water-service lines are located in the position in
which these utilities enter the building. Service lines are normally indicated on the site plan. Vent pipes
Figure 8.7 List of general electrical symbols in current use.