Associated with every site is a site parcel. The site parcel boundary is the outermost extent of a site, containing all alignments, gradings, and parcels. Objects within a site parcel do not have to touch.
The site parcel has an area label, which you can hide or show. You can control the color and line type of the site parcel boundary, and you can control its draw order relative to the boundaries of the parcels 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 parcels 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 parcel, the site parcels perimeter increases by twice the length of the alignment.
- With all of the alignment overlaying the original site parcel, the site parcels perimeter does not increase.
- With some of the alignment overlaying and some of it projecting, the site parcels perimeter increases by twice the length of the part that projects.
In some circumstances, an unclosed sequence of parcel segments can define a valid parcel. With such a parcel, as with an alignment, its area is zero, and its perimeter is twice the sum of its segment lengths.