contours, boundaries, roads, utilities, trees, structures,
references, and other significant physical features on
or near the construction site.
A plan and profile sheet (fig. 15-6) and a typical
cross section (fig. 15-7) are other information found
on a site plan.
Symbols
Symbols used in drawings are as follows:
. A contour line shows us an imaginary line,
representing a constant elevation on the earth’s surface.
Blueprints, or plans, use contour lines to show the final
proposed elevations.
. Existing contour lines identify the existing ele-
vations (fig. 15-8). Existing and proposed elevations are
used to figure cut-and-fill operations.
. Proposed contour lines are those we work to-
ward, You use them to visualize the finished product
(fig. 15-8).
. Utility symbols identify utility lines. The sym-
bols for pipe are shown in figure 15-9. Once all the
Figure 15-9.—Utility symbols for piping.
Figure 15-8.—Existing and proposed contour lines.
15-7
