Associated with every site is a site plot. The site plot boundary is the outermost extent of a site, containing all alignments, gradings, and plots. Objects within a site plot do not have to touch.
The site plot has an area label, which you can hide or show. You can control the color and line type of the site plot boundary, and you can control its draw order relative to the boundaries of the plots that it encloses.
For the purposes of calculating the area and perimeter of a site, an alignments area is zero and its perimeter is twice the sum of its length. Adding an alignment does not affect a site plots area, but can add to its perimeter. If you add an alignment to an existing site
- With none of the alignment overlaying the original site plot, the site plots perimeter increases by twice the length of the alignment.
- With all of the alignment overlaying the original site plot, the site plots perimeter does not increase.
- With some of the alignment overlaying and some of it projecting, the site plots perimeter increases by twice the length of the part that projects.
In some circumstances, an unclosed sequence of plot segments can define a valid plot. With such a plot, as with an alignment, its area is zero, and its perimeter is twice the sum of its segment lengths.