Another type of plot plan can be seen in figure 2-8.
Figure 2-8, view A, shows five buildings that are to be
supplied with electricity for power and lighting. An
electrical layout has been superimposed on the plot
plan General notes (fig. 2-8, view B), one detail (fig.
2-8, view C), and section A-A (fig. 2-8, view D) of that
detail are shown The dotted line at the bottom of the
page indicates underground ducts containing
previously laid cable.
The design engineer has decided to tap the cable at
manhole 22 and run lines overhead to dead-end at the
rear of building 126. Figure 2-8, view C, shows that
lines are to be run underground from manhole 22 to the
first pole crossarms. At building 126, lines are to be
carried down the pole, regathered through a pothead
into the conduit again, and run underground to a
concrete slab, and out through another pothead to a
transformer bank. Where do you get this information?
Refer to figure 2-9.
Figure 2-9 shows detail B is indicated in figure 2-8,
view A. This represents the installation behind building
126 where the overhead line terminates. The last pole in
the system is shown in the lower left comer. From the
pole to the transformer bank, the underground conduit is
indicated by dotted lines. The conduit runs
underground to the concrete slab on which the
transformers rest. Section A-A gives construction
details of the slab.
FLOOR PLANS.Imagine that you want to
know the outline of a building, including each partition.
Figure 2-9.Detail B indicated in figure 2-8.