Figure 4-1(A).Pictorial view of a typical bathroom.
Figure 4-1(B).Waste and vent.
ability to read and interpret them. Imagine
using only written instructions for the
construction of a small building. It would
take volumes of written material. Trying to
understand and visualize all the details
involved in a construction project would
present a very difficult problem for anyone.
For this reason, prints are used. They are
also used by the supervisor to monitor the
progress of construction.
You must be able to interpret the
details, perform the work, and follow
directions from these drawings. You must
be capable of reading prints and passing
along the information contained on the
drawings. Figure 4-1(A) shows a typical
bathroom. Compare the relationship between
4 - 2
Figure 4-1(C).Water service.
the views in figures 4-1(B) and 4-1(C) with 4-
There are various ways that a blueprint shows
work to be done. Since the written word can be
confusing and take up valuable time and space,
other means have been developed. These means
include various types of lines, symbols,
abbreviations, and other methods of providing
dimensions and working directions.
TYPES OF LINES USED ON DRAWINGS
The main types of lines a Utilitiesman should
be able to read and understand are depicted in