Volume measurement

When you select a volume measurement request from the Measure requests list the software shows the map and the Compute volume form.

To compute a volume you must select a surface. You can calculate volumes from surfaces stored in triangulated terrain model (TTM) files. You can import TTM files from your office software or create them from the map in Generell Mätning.

To create a surface:

1. In the map, select three or more 3D points.
2. Tap and hold in the map and select Create surface.

3. Enter the surface name. Tryck på OK.

   The surface is linked to the current job as a linked map file and appears in the map.

   For more information, see Skapa en yta från befintliga punkter.

To compute the volume:

1. In the Method field, select the required calculation method:

   • Above an elevation method

     Calculates the volume of a single surface above the specified elevation. Only the cut volume is computed.

   • Void volume method

     Calculates the volume of material needed to fill a surface up to the specified elevation.

   • Surface to elevation method

     Calculates the cut and fill volumes between a single surface and the specified elevation. Where the surface is below the elevation, fill will be computed; where the surface is above the elevation, cut will be computed.

   • Surface to surface method

     Calculates the cut and fill volumes between two surfaces. The Initial surface, is the original surface and Final surface is the design surface or surface after excavation. Where the Initial surface is above the Final surface, then cut is computed; where the Initial surface is below the Final surface, then fill is computed.

     Volumes are computed only in areas where the initial and final surfaces overlap.

   • Stockpile/depression method

     This works in a similar way to Surface to surface except with only one surface. The selected surface is treated as the final surface and the initial surface is defined from the perimeter points of the selected surface. Where the surface is above the perimeter surface, then cut is computed (stockpile); where the surface falls below the perimeter surface, then fill is computed (depression).

   • Surface area method

     Calculates the surface area, and using the specified depth can calculate the volume.

2. Select the surface or surfaces to use.

3. If required, enter the Haul bulkage or Shrinkage factor to apply to the calculation.

   A haul bulkage factor allows for the expansion of cut material as it is excavated. Haul bulkage is defined as a percentage. The Adjusted cut volume is the cut volume with the haul bulkage factor applied to it.

   A shrinkage factor allows for compaction in fill material. Shrinkage is defined as a percentage. The Adjusted fill volume is the fill volume with the shrinkage factor applied to it.

4. Tryck Beräkna. The Measurement request result screen appears.

   The Shared volume group box shows the value that will be displayed in the Infotech Mobile Inspector web application and used for payment calculations. Select from the following options:

   • Cut volume: The calculated volume of material that needs to be removed.

   • Fill volume: The calculated volume of material needed to fill the area.

   • Cut/Fill balance: The difference between the volume of material that needs to be removed and the volume of material that needs to be added.

   The Measurements group box displays the calculated values:

   • Cut volume: The calculated volume of material that needs to be removed.

   • Cut area: The calculated size of the cut area.
     

   • Fill volume: The calculated volume of material needed to fill the area.

   • Fill area: The calculated size of the fill area.

   • Cut/Fill balance: The difference between the volume of material that needs to be removed and the volume of material that needs to be added. This value is shown only if it can be calculated.

   All of these values are stored in a LandXML file for use in office software and for auditing purposes.

5. To add an additional volume to the final shared value, tap the + softkey to return to the Measure volume form.

   Volumes calculated are added to the total shared volume and the points associated with the volume are shown in the Measurement request result screen in the Selection list after the semi-colon.

6. To complete the measure request, tap Share.

   The information shown in the results screen and the attached LandXML file is shared with Infotech Mobile Inspector and the Daily Work Report.

7. The software returns to the Measure requests screen. The completed measure request is no longer shown in the list.