Vertical Profile Setup

Specific Station Calculator

Profile Input
VPI Name Station Elev Length G1 % G2 % A K VPI Type VPI Del Add

Profile Output and Plotting
Select Element Layer: Name Color Line Type Weight Text: Height Width Font Angle Decimals
Endpoint Circles
VPI Triangles
Major Gridlines
Minor Gridlines
VC Data
Sta/Elev Callouts
Symbol Name Length Horiz Vert Elevation X Coord. Y Coord
Major Grid Spacing
Minor Grid Spacing
Endpoint Circle Radii
VPI Triangle Side
Text Offset to Leader
Plot Origin
Elevation Spacing

Vertical Alignment - Update 10/29/2023

This program computes vertical alignments, can create .dxf files and can store or update a text data file with the input data. A project with vertical alignments can also be created from scratch. Or, a text file can be loaded which contains the project and vertical alignment data. Depending on the input data given, the program can calculate the missing data. A single vertical alignment data file may hold all of the vertical alignments for a project.

Option 1 - Create a Project and Alignments from scratch

To create a project alignment data text file from scratch, create new project name by pressing the Select button. Then create a new alignment name by pressing the Load button. Then Alignment Input data can added in the alignment input table.

Option 2 - Load a project data text file

If a project data text file is avaiable it can be imported by pressing the Choose File button. After the project data file name is opened, select an alignments from those available in the Alignment combo box. To create a new alignment for an existing project press the Load button.

Input Variables:

Vertical Alignment Setup - Defines the project and hoizontal alignment.

Import Project - Press the Choose File button. A file selection menu will appear to load the project alignment data text file.

Proj Name - Once the alignment data text file is selected, the project name will be displayed. Or press the Select button for a new project.

Alignment - Select the specific alignment from the drop down box. Or press the Load button for a new alignment.

Description - Input any description text to be printed with the output.

Specific Station Setup - For a range of baseline stations, find the coordinates and normal bearings along the alignment.

Begin Sta - This is the first station in the range.

Increment - Increment (ft) between stations in the range.

Key Geometric Points - Check the box if key points such as VPI's, VPC's, VPT's, etc.

Calc Button - Press the Calc button after the range data has been entered.

Profile Input Table - Data rows of the input and output information.

VPI Name - A unique name for the VPI. Naming rules are as follows:

1. Spaces are not allowed in the VPI Name.

2. The VPI Name must be unique to the alignment and Project. Multiple alignments cannot share any VPI Name.

Station - The station for the VPI point. Only one VPI station should be input for each equation region.

Elev - The elevation of VPI.

Length – The length of the parabolic vertical curve (ft).

G1 % - The back grade in percent.

G2 % - The forward grade in percent.

A value – This is the Algebraic Difference in Grades (%).

K value - Horizontal distance along which a 1% change in grade occurs K = L / A.

VPI Type - Choices are as follows:

BEGIN PGL - The first PVI point of an alignment.

SAG VPI - This is the VPI point of a sag without a curve.

CREST VPI - This is the VPI point of a crest without a curve.

SAG CURVE - This is a sag vertical curve.

CREST CURVE - This is a crest vertical curve.

EQU BACK - This is the last VPI point on a region.

EQU AHEAD - This is first VPI point of an equation region.

END PGL - This is for the last VPI point of an alignment.

VPI Button - Loads Vertical Curve Data program with profile input data. Data can be modified and profile data updated.

Del Button - Deletes the data row selected.

Add Button - Adds a new data row after the row where the button was selected.

Profile Output and Plotting

Profile Output - This is where the profile output information is displayed.

Plot Fields - Defines the elements and symbology information for DXF plots for the profile, endpoint circles, VPI triangles,

major gridlines, minor gridlines, VC data, grades, and sta/elev callouts.

Plot Dimensions - Defines the scale, major grid spacing, minor grid spacing, endpoint circle radii, VPI triangle side,

plot origin, and elevation spacing for DXF plot information.

Sta Output - This is where the specific station output information is shown.

Action Bar

Run Button - Runs data in the Profile Input table.

Clear All Button - Clears and resets the entire page.

Print Button - Prints the Vertical Alignment output.

Save Button - Saves the computed alignment data into an alignment data text file.

DXF Button - Creates a DXF file for the selected alignment based on symbology and plot symbols selected.

Close Button - Closes the Vertical Alignment program.