This command opens the Input-Edit Road Profile dialog, showing the profile graph and a spreadsheet table containing the profile data. With this dialog, you can enter and edit road profile files (.PRO), not only by specifying the values in the spreadsheet, but also by editing the PVI points on the profile graph directly. The updates in the spreadsheet and the graphic box are synchronized.
From the Profile menu in the Civil Design Module, choose Input-Edit Road Profile. The program reads a road profile file (.PRO), a road centerline file (.CL) and a surface file (.TIN or .FLT). If you design a new road profile, just enter the new road profile file name. If you open an existing profile to edit, the profile graph is shown in the graphic box on the top, and the spreadsheet is filled with profile data. The buttons and lists between the graphic box and the spreadsheet provides the abilities to input and edit the road profile in graphic.
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Input-Edit Road Profile |
Switch to pan mode button: Switch the
cursor to PAN mode
Switch to dynamic zoom mode button:
Switch the cursor to ZOOM mode
Zoom Extents button: Zoom the graphic
window to show the complete graph
Add PVI button: Allow you to add a new
PVI point by picking at any locations inside the graphic box. The
program will extract the station and elevation of the point and
display them in the New PVI dialog, from where you can modify the
station and elevation directly in the Station and Elevation boxes,
or by modifying the Slope In and Slope Out values. You can also
specify the vertical curve length or sight distance to define the
vertical curve of current PVI. The resolution snap for the station
and slope round up the station and slope values. Click on OK button
to save the new PVI data. Below is an example of the dialog.
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| New
PVI dialog |
Edit PVI button: Pick an existing PVI
point on the profile graph and drag it around to change the station
and elevation.
PVI Edit Mode list: This list has five options: Free, Hold
Slope In, Hold Slope Out, Hold Station and Hold Elevation, which
controls the movement of the PVI that is being edited by the Edit
PVI button command.
Vertical list: This list determines the vertical
exaggeration of the profile graph.
The spreadsheet editor allows you to enter and modify data cell by cell. The profile graph will be updated automatically after any changes of the profile data. Insert PVI button inserts a row in front of the highlighted row to create a new PVI, Remove PVI button deletes the highlighted row as while as the corresponding PVI, and Screen Pick PVI button allows you to pick a point on screen and insert it into the spreadsheet. In the Sag-Crest Points list, the coordinates of all Sag and Crest Points are listed.
Click on the Settings button, the settings dialog displays.
Hold Current Elevation: When you change a PVI's station or
elevation, if this toggle is on, its slope out will be changed and
the elevation of the next PVI is held, otherwise its slope out is
held and the elevation of the next PVI will be changed.
User K-Value: Toggles between displaying K-Value and Sight
Distance in the fifth column of the spreadsheet.
Grid Ticks Only: Toggles between displaying the grid and
grid ticks in the graphic box.
Show Slope When Zoom In: This option allows to display the
slopes on the long enough profile segments when zoom in.
Show Reference Surface: An option to show the reference
surface profile along with the road profile in the graphic box.
Show Reference Surface At Left Offset: An
option to show the reference surface profile at an user-specified
left offset of the road centerline.
Show Reference Surface At Right Offset: An
option to show the reference surface profile at an user-specified
right offset of the road centerline.
Show Centerline Special Stations: When this toggle is on,
the points at centerline special stations such as PC, SC, ST, TS
and SP are shown in the graphic box.
Show Vertical Lines for Intersections: When this toggle is
on, vertical lines represent intersections of two road profiles are
shown.
Show Sag-Crest Points: An option to draw the sag and crest
points in the graphic box.
Output Reference Surface Profile: An option to output the
surface profile to a file whose name has a suffix of the current
road profile file name.
Set button: Set the current Reference Surface file to
another one.
Drag PVI Options: When pick an existing PVI point on the
profile graph and drag it around, you may choose to hold either the
vertical curve length, or the K-value, or the sight
distance.
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| Road
Profile Settings |
This function applies the design template at the road profile to
get the road section file, computes the outslopes and earthworks
relative to the reference surface section file, and displays both
road and surface sections in a graphic dialog box. Click on the
Show Sections button, the
Road Design Templates dialog displays. The last 4 input items are
strictly optional design files.
Design Template: Specify a template file (.TPL) or template
series file (.TSF) that defines the final grade offsets and
elevations and the cut/fill slopes.
Template Transition: Specify a .TPT file, which allows
modified template files to be applied at different ranges of
stations on a project.
Template Point Profile: This option lets you have separate
profiles for template points that are independent of the centerline
file.
Template Point Centerline: This option lets you have
separate centerlines for template points that are independent of
the main centerline.
Super Elevation: This option is used to specify a super
elevation file (.SUP) that defines the super elevation transition
stations on a project.
After specifying the design template file(s), click on OK button to display the section graph. In the section dialog, the graph is automatically updated when you move your cursor along the road profile graph to change stations.
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| Show
Sections: Choose Templates |
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| Road
Design Section Dialog |
The Vertical Speed Table function provides a few of speed tables, which utilize AASHTO's speed table data and offer the recommendations for design speeds and curve parameters. Please refer to AASHTO A Policy on Geometric Design of Highways and Streets 2004 (pp 265-280) for details.
Click on the Vertical Speed Tables button to open the speed
table dialog shown as below. The Table Name list contains the names of
all speed tables that have been defined. There are five default
speed tables: AASHTO - Crest Curve Based On Passing Sight, AASHTO -
Crest Curve Based On Stopping Sight, AASHTO - Sag Curve Based On
Stopping Sight, METRIC- AASHTO - Crest Curve Based On Passing
Sight, METRIC- AASHTO - Crest Curve Based On Stopping Sight and
METRIC- AASHTO - Sag Curve Based On Stopping Sight. You can add,
edit and delete any speed tables. All speed table files are
in the ...\USER folder and are available for all projects.
After highlighting a Design Speed and click Apply Sight Distance
button, the Sight Distance value will be applied and the Vertical
Curve is calculated and filled in the spreadsheet. When there's no
vertical curve, you are allowed to create Vertical Curves for all
VPIs and the program will check if the vertical curve value fits
all the VPIs.
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| Vertical Speed Table |
Click on the Add button, the New Vertical Speed Data dialog displays. Enter values in the Design Speed, Sight Distance and K boxes. Click on OK button to commit the new speed entry. Edit button allows you to modify design speed, sight distance and K values of the highlighted speed entry, and Delete button deletes the highlighted entry from current table. New Table button creates a new speed table, Edit Table button is used to modify the name of current table, Duplicate Table button makes a new speed table that contains the same data as current table, and Delete Table button removes current table completely.
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| New
Speed Entry |
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| New
Vertical Speed Table |
Input-Edit Road Profile dialog: Fill in values.
Pulldown Menu Location: Profiles > Input-Edit Road
Profile
Keyboard Command: roadpro
Prerequisite: a road profile file (.PRO), a road centerline
file (.CL), a surface file (.TIN, .FLT)