How To Create Intersections

You will create two basic types of intersections, which differ in how the intersecting road crowns are blended:

• In a peer road intersection, the crowns of both roads are maintained. The primary road centerline profile is maintained, and a locked PVI is created on the secondary road centerline profile where it intersects with the primary road centerline. The pavement of both roads is blended into the curb returns.
• In a primary road intersection, the primary road crown is maintained. The primary road centerline profile is maintained, and a locked PVI is created on the secondary road centerline profile where it intersects with the primary road centerline. Two additional locked PVIs are created on the secondary road centerline profile at the primary road edges of pavement. The primary road cross-slope is maintained, and the secondary road pavement is blended from the primary road edges of pavement along the secondary road pavement edges.

You will also experiment with curb return widening parameters, which are used to create turn lanes.

For information on adding widening regions to offset alignments that are outside the intersection area, see the Adding a Widening to an Offset Alignment exercise.

Slope Stake report from Multiple baselines

Issue:

When trying to create a Slope Stake Report, it will not work if you have multiple baselines set up. The report will only be created on the FIRST occurrence in that alignment. If you try to run the report on another occurrence, you'll get the following error message: 

 
 

Causes:

The issue has been escalated to the development for a possible cause and resolution.

Solution:

As a workaround, create different alignments instead of more baselines. This would produce the desired results without having to delete anything.

How to Create Reports - Slope Stake Report

Use this dialog box to select the corridors and specify sample line groups for a cross section slope stake report. This report identifies the points of slope change for a selected corridor link.

Select Report Components

Select Corridor

Specifies the corridors to include in the report. Only corridors that are based on alignments with defined sample line groups are displayed.

Select a corridor from the list or click  to select a corridor from the drawing.

Select Alignment

Specifies the alignment to include in the report. Only the alignments contained in the selected corridor are displayed.

Select Sample Line Group

Specifies the sample line group to include in the report. Only the sample line groups for the selected alignment are displayed.

Select Corridor Link

Specifies which corridor link to use in the report. A link is defined as a single straight-line segment between endpoints on a subassembly.

Add

Adds the selected corridor, alignment, and sample line group to the List of Corridors to include in the report.

List of Corridors

Include

Lists the corridors to include in the report.

Note

When a corridor is highlighted, the start and end stations are editable. See Report Settings below.

Alignment & Sample Line Group

Lists the alignment and sample line group that you selected.

Station Start & Station End

Displays the start and end stations for the selected sample line group.

You can edit these values using the Report Settings (see below).

Delete

Removes the corridor from the list.

Report Settings

Start Station & End Station

Displays the start and end stations for a highlighted sample line group. Click a sample line group name in the list to highlight it.

You can edit these values to change the range of stations included in the report. You can enter formatted or unformatted values, such as 2+50.95 or 250.95.

Save Report To

Specifies the name and location of the resulting report.

Create Report

Generates the report and saves it to the specified location.

Done

Closes the dialog box and discards changes to station ranges.

Report Results

The slope stake report has data formatted in columns. The end columns contain information about the last two offsets in the corridor. The other columns contain information about the point codes.

End Column Descriptions

• Row 1: Reports either cut (C) or fill (F) which is determined by the elevational difference between the last two offsets reported.
• Row 2: Reports the distance difference between the last two offsets reported.
• Row 3: Reports the slope value from the second-to-last offset point to the last offset point.

For example:

C 8.47

@33.87

S 1:4.00

Report Column Descriptions

• Row 1: Reports the point code.
• Row 2: Reports the offset value relative to 0+00.
• Row 3: Reports the elevation value at that offset.
• Row 4: Reports the slope from that point headed toward the next point (away from 0+00).

For example:

Daylight

-110.369

629.991

1:-4.00

Note

For slope values greater than 2:1, the value is reported as 1:X. For slope values less than 2:1, the value is reported as X%.

How to create Points/Stakes for Road Centerline

Creating Stakes

Create a PENZ space-delimited point file containing point information and use the file to create or add data to a surface in AutoCAD Civil 3D.

To create a point file manually

1. Open a text editor, such as Notepad.
2. Enter the point number, easting, northing, and elevation values. Separate each value by one or more spaces.
3. Enter the information for each point on a separate line. For best results, do not include extra spaces at the end of a line or blank lines at the end of the file. The file should consist entirely of point data. However, you can add a comment line by entering a # sign at the beginning of a line.
4. Save the file as a text file.

An example of a PENZ space-delimited point file:

# Autodesk Point File Format 
3      379.910000   511.270000   227.620000
4      393.880000   497.100000   225.750000
5      382.640000   464.050000   223.890000
6      403.690000   429.340000   222.880000
103    190.080000   307.560000   194.250000
104    182.090000   322.940000   194.940000
105    174.100000   338.320000   195.630000
106    142.910000   340.320000   203.030000
107    117.470000   342.780000   208.460000
108    124.430000   394.400000   208.410000
109    137.700000   400.690000   205.430000

How To Create Quick Profiles

To create a quick profile from an object

1. Click Home tabCreate Design panelProfile drop-downQuick Profile Find.
   On the command line, you are prompted to pick an object.
2. In the drawing, select a line, polyline, lot line, feature line, or survey figure.
3. In the Create Quick Profiles dialog box, select the surfaces you want to sample, and the profile and profile view styles.
4. Optionally, if you selected a 3D object, select Draw 3D Entity Profile to display elevation data for the object in the quick profile and a profile style for the 3D object elevation data.
5. Click OK.
6. In the drawing window, click a location for the lower left corner (origin) of the profile view grid.
   The quick profile is drawn.

To create a quick profile by selecting points

1. Click Home tabCreate Design panelProfile drop-downQuick Profile Find.
   On the command line, you are prompted to pick an object.
2. Enter p (points).
3. In the drawing, select a point, and then a second point.
4. Optionally, select additional points as required.
5. Press Enter.
6. In the Create Quick Profiles dialog box, select the surfaces you want to sample, and the profile and profile view styles.
7. In the drawing window, click a location for the lower left corner (origin) of the profile view grid.
   The quick profile is drawn.

Types of interchanges - Class Scope and workflow

Class covers cloverleaf interchange but principles shown in the class are applicable to many other interchanges.

How to create an assembly offset and have it follow a separate baseline

Issue:

After creating an assembly offset in Autodesk® AutoCAD® Civil 3D® the assembly does not follow a certain alignment.

Causes:

Offset assembly is missing a horizontal baseline assignment.

Solution:

• In the corridor properties select a horizontal baseline for the offset assembly and a desired profile if needed

Result: