Technical information

150 | Chapter 11 Working with the Layout Commands
Using the Layout Menu
You can use the commands from the Layout menu to add finishing touches,
such as intersections and cul-de-sacs, to alignments that you created using
AutoCAD Land Desktop. As you plan a site layout, design efforts focus on the
identification, sizing, organization, and location of site elements. These site
elements can include open space areas, walks, and paths. You can also use the
Layout commands to add details to site plans, such as parking stalls and
sports fields.
Creating Intersections
The Intersection commands from the Layout menu clean up lines where road
alignments cross. Several intersection commands can be used to automate
the intersection-creation procedure by breaking lines, where necessary, and
filleting curves.
Several geometric design issues need to be considered in creating intersec-
tions, including the horizontal and vertical alignment of the adjoining roads,
location of sidewalks and utilities, and provision for adequate sight distance.
The minimum distance for the driver to react and stop the vehicle before
reaching an object in the road is known as stopping sight distance (SSD), and
should be considered not only on horizontal and vertical curves, but on
intersections as well.
TIP When you use the Intersection commands, linetypes that are not continu-
ous, such as dotted or dashed lines, can cause problems. If a point of tangency
falls at a line space, the command can fail. The commands are also sensitive to
a zoom location. If all the offsets and distances appear correct, but an Intersec-
tion command is failing, you may need to zoom in or out of the intersection for
the command to function properly.