CADD Engineering Standards - Ohio Department of Transportation

ODOT CADD Standards contain two (2) types of cell definitions:
January 18, 2013
1. “Cosmetic” cells
Cosmetic cells are used to represent the location of an object and are intended only to designate
the location not the actual size or dimensions of the object. A Mail Box, shown below, is an
example of a cosmetic cell.
• Cosmetic cells are typically placed in the design file at a scale of one (1) and then displayed
using the Annotation Scale factors in the design file at a scale corresponding to the intended
plotting scale of the final plans.
• The ability to place Cosmetic cells using the Annotation Scale Lock has been enabled in
the cell definition by toggling on the Can be placed as annotation cell option.
2. “Physical” cells
Physical cells are used to represent the actual size or dimensions of an object. A Catch Basin,
shown below, is an example of a physical cell.
• Physical cells are always placed in the design file at a scale of 1, regardless of the plotting
scale and are designated as such that the Annotation Scale factors when applied are
ignored.
• The ability to place Physical cells using the Annotation Scale Lock has been disabled in the
cell definition.
The Place Active Cell tool is used to place annotation cells. The
tool's settings window has an Annotation Scale Lock icon similar
to the one for the Place Text tool and dimensioning tools. When
you set the Active Cell to a cell that can be placed as an
annotation cell, the Annotation Scale icon should be enabled as
shown right.
The icon's tool tip tells you the active model's annotation scale
factor and the off/on state of the Annotation Scale Lock. If this
lock is on, the model's Annotation Scale factor will be applied to
the cell you are placing. To turn on the Annotation Scale Lock,
click the icon.
Note: If the Annotation Scale lock is off when placing cells
in the design file the Annotation Scale feature is ignored.
Cosmetic and Physical cells for plan graphics are specified in the CADD Information Table, Appendix A
and displayed in Appendix C along with the Cell Origins.
ODOT CADD Engineering Standards 33