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Earthwork and Select Material Calculations |
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This documentation is being offered as a suggested method for calculating earthwork and select material areas on cross sections. Comments about this process or other alternative methods are encouraged. Before you begin Modify the cross section display to show
pavement and select materials in the sub-grade level.
Make sure they are trimmed properly so that the areas can be flooded. Create
a new drawing to store the area fills. The name will be the project number +
"xs" + MX alignment name + "Qty.dgn, such as
12345xsmcamQty.dgn. Attach the cross section file as a reference. Creating the areas Use QA input to set level line style and color for each material (i.e. sand, gravel, crushed gravel). Set an appropriate text size. Use the create region tool from the groups tool box to flood your areas. The suggested settings include flood, Fill Type Opaque, Keep Original, ignore interior shapes, and max gap set to .005 or smaller. Shutting off all levels not directly needed will simplify and speed up the process of flooding areas. For select materials, only have the subgrade, design, and stations turned on. This greatly helps in shading the appropriate area. By more closely viewing the section you are working on, the flooding operation will work faster. If you are having problems flooding an area try power selecting the elements that make up its outline. You may need to go back to the cross section dgn to trim your subgrade elements properly.
Open the ATOOL MDL by hitting on Utilities -> mdl applications -> ATOOL and run. See the ATOOL documentation for more information about this program.
A set of colored sections can be printed so that you have a record copy of the areas which can be checked easily by looking to see that the colored areas are within the lines intended. The area text numbers can easily be read off this printed set while compiling into a Excel earthwork computation sheet.
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CAD/D Homepage
| MicroStation v8 Documentation |
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