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In order to explore the full functionality of GEOPAK Road, you will investigate a
particular function not covered in class. You are expected to learn how
the tool works and demonstrate the method to the class. You can work in groups of 2.
- Demonstrations will be
given by you on your assigned date.
- Demonstrations should
be about 10 minutes.
- A brief explanation
using PowerPoint
- Demo using Geopak
- What to submit?
- A word doc. which
briefly explains your project and the complete steps of its working.
- Power Point
presentation.
- Geopak and
MicroStation files of the project
- Burn it on a CD and
submit as there will not be any labs after that.
- For help, you have the
following resources:
1. GEOPAK
help (Applications - Geopak Road
- Help)
2. Knuckleheads
Guide to Geopak
- These are some of the
topics that you can present.
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Hints
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1) 3D- Drive Through
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- The Knuckleheads
Guide to Geopak has a good review of this tool.
- Before using the
guide, you must create a 3D dgn file. You can do this by
creating a NEW dgn file and using the standard 3D seed file:
C:\Bentley\Workspace\system\seed\seed3d.dgn.
- To change your
viewpoint in a 3D dgn file go to the 3D Rotate View button in the
view toolbar (the 6th from the left). Set the Method to
Dynamic or Top (and then left click in the
window). Top will show a plan view.
- Use the job1.gpk
file and load the alignment as a 3D chain by going to Applications -
Geopak Road
– 3D Tools - 3D Modeling - 3D Alignment. The profile is the
existing ground profile. Use a horizontal and vertical scale
of 1.
- Then use the
topo.tin file and load the contours.
- Now follow the
steps in the guide: http://www.wfl.fhwa.dot.gov/design/cadd/idiot2001/drive_ex.htm
Try a constant elevation of 200, an increment of 100, and
a target offset of 100. Set the station to 10+00.
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2) Mass diagrams
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Process all data up through earth.inp and go to Geopak Road -
Cross Sections - Earthwork - Load the earth.log file - Draw Mass Diagram.
Play with the scales and labels until it looks reasonable. DP is
the data point of the lower left hand corner of the chart.
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3) TIN from contours
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There are two functions to explore:
- Converting 3-dimensional
contours (lines) into a TIN:
- Download this
file: 3dcontours.dgn. This is a
3D dgn file containing simple contours store in 3-dimensions. Use
the Information tool to check the Z values..
- Use the DTM Tool:
Extract Graphics
- Specify an
output DAT file name, use an ASCII output, set feature to contour,
Select the appropriate level, and set Types to Line
- Create a TIN
from resulting DAT file like we did in Lab
3
- Converting spot
elevation text into a TIN:
- In a different
dgn file, make up some spot elevation data by using the place text
tool for MicroStation (the "A" button).. just type the
elevation and place in the dgn file (for example, type in 140 and
click down 10 or so.. then type 150 and place some more, 160
etc...maybe in the rough shape of a hill..)
- convert this
text to a DAT file using Extract Graphics again
- this time, set
the feature to Spots and the Types to Text/Content
- create another
TIN from the resulting DAT file
Plot the resulting TIN’s, showing contours
and triangles etc...
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4) Spirals
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- Applications - Geopak Road
- Geometry - Layout Alignments Horizontal. Extend the top tool
button. Place Spiral is the second button from the
right. Take a look at Lab 4....
go through the same exercise but place spirals instead.
- First, create the
tangents without curves from point A to B in the Lox project.
- Place spirals: Use
a spiral-curve-spiral combination (SCS)
- Try a spiral length
of 300 (same for Length 2) and a curve radius of 1000 or so..
- Select both line
segments and the spiral is created..
- Use store graphics
to convert the geometry to a geopak chain
- Use D&C
Manager to plot the chain with stationing and spiral data
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5) COGO Navigator
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- Applications - Geopak Road
- Coordinate Geometry - Use ur
job1.gpk file
- In the COGO
application, go to Tools - Navigator. This tool provides
direct access to the data in your gpk file (chains, points,
profiles, curves...). Demonstrate the tool buttons (add,
delete, edit, renaming things... ) and be able to answer questions
on the functionality of the menus (Select and Tools.. visualizing
elements.. etc..)
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7) Passing sight distance
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See the Knuckleheads
Guide to Geopak. You may run into trouble because the beginning
and ending stations do not overlap the proposed TIN. Generate the
sight distances between stations 20+00 and 50+00... or so... and you
should be free of problems. Show an example with just striping..
and then one with the actual straight line sight distance lines.
Explain the text report.
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8) 3D modeling
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- There is help in
the Knuckleheads
Guide to Geopak
- Before using the guide,
you must create a 3D dgn file. You can do this by creating a
NEW dgn file and using the standard 3D seed file:
C:\Bentley\Workspace\system\seed\seed3d.dgn.
- To change your
viewpoint in a 3D dgn file go to the 3D Rotate View button in the
view toolbar (the 6th from the left). Set the Method to
Dynamic or Top (and then left click in the
window). Top will show a plan view.
- Use ur job1.gpk
file used in class and load the alignment as a 3D chain by going to
Applications - Geopak
Road - 3d Tools - 3D Modeling - 3D
Alignment. The profile is the existing ground profile.
Use a horizontal and vertical scale of 1.
- Also look at two
other functions: Superelevation Surfaces and 3D Cross Sections
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9) Project Manager
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The project manager is under Applications - Geopak Road -
Project Manager. Explore this tool.. show how to create projects,
users, and briefly go through the functions of the Road Project Dialog
(see Applications - Geopak Road - Help - Project Manger) (use Road
button, not Survey).
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