Much of the information in the proposed cross section input file must be edited for project specific situations. Once you copy one of these input files to your directory, simply change whatever data you need to fit your specific project.
A Proposed Cross Section input file. You can find all of our "seed" input files in F:\Resource\Geopak\Inp. The most current proposed cross section input file is named PRXS_M10.INP.The "Exception Data" input file. You can find all of our "seed" exception data input files in F:\Resource\GEOPAK\X. The most current exception data input file is named EXCEPT_M.XDT.A .DGN file containing the SHAPES.A .DGN file containing the existing ground cross sections. You should already have this file, and until now should only contain existing ground cross sections (on level 56) and cross section "cells" (on level 63).Criteria files. The criteria files that are listed in the proposed cross section input file must be shown with their full path if they're not in your working directory. You can find all of our criteria files in F:\Resource\GEOPAK\X. Most criteria files are accessed generically for multiple jobs and need not be in your actual working directory.
Make sure that the last line of this input file directs GEOPAK to write the foreslopes, ditch slopes cut/fill slopes etc... into the .DGN file that contains your existing ground cross sections. Next open the .DGN file that contains your existing ground cross sections and invoke the Run Cross Sections tool either by using the pulldowns ...
APPLICATIONS > GEOPAK ROAD > CROSS SECTIONS > Process Cross Sections
...or use the "Tools" icon (shown below):
Fill in the fields of the dialog box and press APPLY.
A handy tool to review the cross sections when they're finished is the CROSS SECTION NAVIGATOR. To access this:
APPLICATIONS > GEOPAK ROAD > CROSS SECTIONS > NAVIGATOR
... or use the Tools icon shown below:
With this tool you can step through, section by section or simply
select the section (from a pick list) that you want to review and you will
see it immediately. For more information on this tool see "Pavement Definitions, Cross Sections & Earthwork", Part II, Chapter 8 in the Geopak 2001 Manuals.
For my condensed explanation... see "The Cross Section Navigator"
For example...Let's say you have a project that starts at 20+000 and ends at 100+000.The pavement design from 20+000 to 40+000 calls for:
The pavement design from 40+001 to 100+000 calls for:
- 0.08 m Asphalt pavement
- 0.10 m Emulsified treated aggregate base
- 0.15 m Aggregate base
When designing from the top of pavement down, this can be a problem. My best advice is to have your pattern lines in these two areas be different from each other in some way, and have two proposed cross section input files. Each of these input files would have the "pattern line criteria," "pavement depth" and "layers" specified to fit the appropriate areas. You simply run each input file separately and the proposed cross section elements will be drawn on the appropriate existing ground cross sections. After both input files have been executed, the earthwork may be calculated for the whole project with only one earthwork input file. Sounds like a hassle but really isn't too bad!
- 0.08 m Asphalt pavement
- 0.10 m Emulsified treated aggregate base
- 0.15 m Aggregate base
- 0.30 m Select topping
PRXS_M10.INP (This is the "Proposed Cross Section" input file).
EXCEPT_M.XDT (Defined variables such as flat bottom ditches and bench cuts. PRXS_M10.INP needs this file).
Note:
If the designer wants a fixed foreslope ratio the following should be used:
FH_WIDE.X10
FH_SH1.X10
FH_FS3.X10
If the designer wants a fixed foreslope distance the following should be used:
FH_WIDE.X10
FH_SH1.X10
FH_FS5.X10
