LESSON 3
UTILITIES DRAWINGS
TEXT ASSIGNMENT .............................................................................. Attached Memorandum.
LESSON OBJECTIVES
Upon completion of this lesson on Utilities Drawings, you should be able to accomplish the following in the
indicated topic areas:
Water Supply and Distribution. Discuss the elements of a typical water supply waste and distribution system
1.
used in military field installations.
Plumbing Symbols. Identify the symbols used on plumbing plans for piping, fittings, valves, and fixtures for
2.
water distribution and waste disposal.
Sewerage System Plans. Describe and interpret simple plumbing and sewerage system plans.
3.
Electrical Distribution System. Explain power transmission and distribution systems as used in military
4.
installations.
Interior Wiring. Identify the components of an interior wiring system and the symbols used for them on
5.
wiring diagrams.
Electrical Plans. Describe and interpret simple electrical plans.
6.
ATTACHED MEMORANDUM
Section I. Water Supply and Distribution
From the general plan (lower left corner of figure 3-
3-1.
DEFINITION
1) you can see how the water is diverted from the
A water supply system consists of facilities,
stream. You should notice that it may be necessary
equipment, and piping that are used to obtain, treat,
to construct a diversion structure in the stream to
and transport water for the distribution system. A
raise the water surface level This water supply may
distribution system is a combination of connected
also be obtained from a surface water collecting
pipes laid out in the form of a "tree" or "gridiron" to
reservoir or from wells either deep or shallow. Two
carry the supplied water to the usage point in the
section views are indicated on this general plan view.
system.
Section A-A shows the details of the baffle and the
shape of the diversion ditch. Section B-B shows that
the water is pumped through a hose with a strainer
from a box secured in the sedimentation basin to a
3-2.
WATER SUPPLY SYSTEM
purification unit.
Elements found on a typical construction print
for a water supply system are shown in figure 3-1.
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