Datasheet

WINDOWS ON THE MODEL 7
Specify Grid Rotation Angle — Enter an amount or set a line to North by picking an angle or
deflection in the drawing. You can use this same method to set the azimuth if desired.
Most engineering firms work on either a defined coordinate system or an arbitrary system, so
none of these changes are necessary. Given that, this tab will be your only method of achieving the
necessary transformation for certain surveying and Geographic Information System (GIS)–based,
and Land Surveying–based tasks.
Object Layers Tab
Setting object layers to your company standard is a major part of creating the feel you’re after
when using Civil 3D in your office. The nearly 50 objects described here make up the entirety of
the Civil 3D modeling components and the objects you and other users will deal with daily.
The layers listed in this dialog by default reflect a modified AIA CAD Layer Guideline as
part of the National CAD Standard (NCS). This layering standard is built into many places in
Civil 3D’s templates and is becoming more widely adopted in the land-development industry.
In addition to being fairly comprehensive and well known among engineering firms, the
NCS has the benefit of being the roadmap for the future in terms of out-of-the-box content
from Autodesk. Adopting this standard means you’ll have fewer things to change with every
release of the software. Nevertheless, it is important that every user know how to modify these
defaults.
One common issue with the shipping templates is that the templates assume road design is the
primary use of alignments. Use the following procedure to change the Alignment setting to the
NCS for laying out a sanitary sewer:
1. Click the Layer column in the Alignment row, as shown in Figure 1.5.
Figure 1.5
Changing the Layer
setting for the Align-
ment object
2. In the Layer Selection dialog list, select C-SSWR-CNTR and click OK.