Earthwork finals - project

qnty-erthwrk-fnl-prjct-01.mp4 30:14

1. This section will demonstrate two ways to obtain final project cut volume(s) information:
   • Surface Comparison by creating a Volume Surface
   • Calculate Average End Area Volumes, using sections along a baseline alignment
2. For this exercise, a final survey was performed after the base/pavement had been placed. This workflow can also be used for almost any earthwork project volume calculations.
3. Create a drawing from the template using wisDOT12.dwt.
   • Save the drawing.
4. The subgrade and final survey drawings are to be located in the 3DModelDeliverable folder of the project. Verify that a Data Shortcut has been created of the following surfaces:
   • Final survey surface
   • Existing ground surface
   • Design subgrade surface

 

5. Create Data References of the Surfaces
   • Expand the Surfaces list below Data Shortcuts in the Prospector tab on the Toolspace
   • Highlight the Existing surface,
     • Right-click and choose Create Reference.
     • Use the default name and style settings and press OK.
   • Repeat the previous steps to create a data reference for the all surface needed
     • Zoom extents if necessary to see the surfaces.
6. Create the Final Earthwork Composite Surface
   • Navigate to Surfaces from the Home ribbon and selecting Create Surface. Name the composite surface something similar to Final Earthwork Composite
   • Add Final Survey surface definition to the Final Earthwork Composite surface using the Paste tool
     • Press Surface on the Modify Ribbon above Ground Data. This will open the default Surface contextual Ribbon.
     • From Edit Surface select Paste Surface.
       • Press the space bar to open the dialog box and select the surfaces from a list.
       • Info: Note: The first surface to select is the main or base surface, and the second surface is the one to paste onto the base surface.
       • Highlight the Final Earthwork Composite surface in the list, as the base surface, then press OK
       • Highlight the Final Survey surface in the list, as the surface to paste onto the base surface, then press OK
   • Add 3DSurfaceModel-Subgrade surface definition to the Final Earthwork Composite surface
     • Press Surface on the Modify Ribbon.
       • This will open the default Surface contextual Ribbon.
     • From Edit Surface select Paste Surface.
       • Press the space bar to open the dialog box to select the surfaces from a list.
     • Highlight Final Earthwork Composite surface in the list, as the base surface, then press OK
     • Highlight 3DSurfaceModel-Subgrade surface in the list, as the surface to paste, then press OK

1. Calculate Final Earthwork Volume from Surface Comparisons by Creating a TIN Volume Surface
   • Press Surface on the Home Ribbon, and select Create Surface.
     • Set the Type to TIN Volume Surface.
     • Name: Final Earthwork Volume
     • Select the Existing surface for the Base Surface
     • Select the Final Earthwork Composite surface for the Comparison Surface
   • Go to the Surface Properties Statistics tab and review the TIN Volume numbers
     • Information here may be copied to the clipboard using the right-click menu for comparison with the Average End Area calculations.

2. Create Volume Report using the Volume Dashboard Tool (This is an add-on for version 2012 and may be downloaded from the Autodesk Subscription Center)
   • Typing VOLUMEDASHBOARD at the command line to show the dialog.
     • The Volume Dashboard can be accessed in the Toolspace, Toolbox tab, under the Subscription Extension Manager collection. Expand Volumes Dashboard Extension for AutoCAD Civil 3D 2012 and right-click on Volumes Dashboard for AutoCAD Civil 3D 2012 and select Execute.
   • Press the Add Volume Surface button
     • The first one on the left, and select the Final Earthwork Volume surface.
   • Select the Final Earthwork Volume surface
     • Here you can review the cut and fill volumes that are shown in both tabular and graph form and generate a Volume Report by selecting the Generate Cut/Fill Report button on the Dashboard. A report is created for viewing. The information in the html report can be copied and pasted into an excel worksheet.

 

1. Matchline alignments should already exist as part of the design process.
   • Data reference all the matchline alignments for the project, including any side roads into the drawing.
   • Highlight each matchline alignment, one at a time in the Prospector tree, right-click and select Promote. The matchline alignment should be in the Miscellaneous Alignments collection
   • Verify that each matchline alignment extends beyond the final survey surface and edit the alignment to extend if necessary, ensuring that the tangent angle is preserved.

For a tee intersection a left and right matchline alignment should exist as a data shortcut within the project.

1. When working with the Sample line groups a good practice is to set each surface display style to a border only or no display style.
   • Create a Sample Line Group from Home ribbon, Profile & Section Views, Sample Lines
   • Select the main road centerline alignment.
     • Verify the Exist surface and Final Composite surface are checked as data sources to sample.
   • Create Sample lines by range of stations.
     • Set the "From alignment start" and the "To alignment end" settings to False.
   • Select the Start Station to reveal the select-from-drawing button.
     • Pick the radius point of the curb return with the lowest Station along the selected alignment.
   • Select the End Station to reveal the select-from-drawing button
     • Pick the radius point of the curb return with the highest Station along the selected alignment.
   • Set the Left and Right Swath Width; Snap to alignment to be True
     • Define the left and right swath width target alignment by clicking on the ellipse button to access the drop down list or use the select-from-drawing button and select the matchline alignment for each.
   • Set the Sample Increments to 5' for rural intersections and 2.5' or less for urban areas.
     • In the Additional Sample Controls, set the At Range Start to True, the At Range End to True, and the rest of the controls to True.
   • Select OK to close, or repeat these steps for other intersections along the alignment.
2. Create Sample lines through intersections along the crossing roadway
   • Repeat the same procedures for sample lines through intersections along the main roadway, selecting the cross road centerline alignment, as well as accompanying matchline alignments for swath widths
3. Create Sample Lines along Roadway
   • Select a Sample Lines from Home ribbon and select the centerline alignment.
     • Verify the Exist surface and Final Composite surface are checked as data sources to sample.
   • Create Sample lines by range of stations
     • Set the "From alignment start" and the "To alignment end" settings to False.
   • Select the Start Station to reveal the select-from-screen button.
     • Pick the start station of the area to be sampled, this may be the start of the project or it may be the radius point of the down station intersection.
   • Select the End Station to reveal the select-from-screen button.
     • Pick the end station of the area to be sampled, this may be the end of the project or it may be the radius point of the up station intersection.
   • Define the swath width and station frequency of sample lines so they extend beyond the border of the Final Survey surface.
   • Set the sample increments.
     • A 50' increment for rural locations, while 25' or less may be appropriate for urban areas.
   • Under the Additional Sample Controls;
     • Set the At Range Start to True if the range start is at the beginning of the project. Set the At Range End to False, if the range end is at the beginning of an intersection area. Set it to True if the range end is at the end of the project. Set the rest of the controls to True.
   • Select OK and close the Sample Line Tools dialog.

To add more sample lines for critical location and site irregularities select the sample method "At a Station", then pick the location desired for an additional sample line. Follow the command line prompts for left and right swath width, then select another location or press enter to quit the command

Both of these sample line methods create sample lines that are perpendicular to the alignment.

In a situation where two baseline somewhat parallel each it may be necessary to use a longitudinal matchline as a swath width target between the two baselines to ensure the two sample line groups do not overlap. Some examples of this are divided highway, frontage road, or ramp situations.

4. Calculate Final Earthwork Volume from Sections using the Average End-Area Method
   • Open the Sample Line Group Properties Dialog by selecting one of the sample lines, then selecting Group Properties on the contextual ribbon.
     • In the Material List tab, Click on Import another criteria and use the WisDOT Mass Ordinate Quantity Takeoff criteria.
     • Choose <Click here to set all> next to Exist surface and assign the Existing surface.
     • Choose <Click here to set all> next to Final Datum surface and assign the Final Earthwork Composite surface, if created, otherwise assign the final survey surface. Not all material will be assigned.
     • Press OK to continue
   • Set Volume calculation method to Average End Area and click OK to exit.
     • The material volumes have now been computed.
   • On the sample line contextual ribbon, select Generate Volume Report.
     • Verify the alignment, sample line group, and material list is correct.
   • Generate Volume Report using the earthwork.xls style sheet.
     • The cumulative volumes in the report can be compared with the volumes developed using the surface comparison method by creating a volume surface.

The information in the html report can be copied and pasted into an excel worksheet.