Use the Compute Materials command to generate a material list for a sample line group.
Material lists are the starting points for creating quantity takeoff tables and reports, and mass haul diagrams. When you apply a quantity takeoff criteria to a sample line group, a material list is added to the sample line group properties. You can then use the material list to create a volume table or report, or a mass haul diagram.
Before you create a material list, you must first define quantity takeoff criteria and create sample lines for the alignment along which you are going to generate quantity takeoff or mass haul information.
The material lists you create are stored as part of the sample line group properties. If you select a sample line group that already has a material list when you are using the Compute Materials command, the existing list is opened for editing.
Curve correction may be required to correct volume calculations within a curvilinear section of an alignment (or on two sides of a horizontal intersection point). If the sample lines are within a specified tolerance or if the angle of deflection between the successive stations is small, then curve correction is not used.
To create a new material list for a sample line group
- Click Analyze tab
Volumes And Materials panelCompute Materials
.At the Command prompt, enter ComputeMaterials. - In the Select a Sample Line Group dialog box, click the Select Alignment field. Select an alignment from the list or click
and select an alignment in the drawing. - Click the Select Sample Line Group field. Select a sample line group or click to select a group in the drawing.
- Click OK.
If there is no material list associated with the sample line group, the Compute Materials dialog box is displayed.
If one or more material lists are already part of the sample line group properties, the Edit Material List dialog box is displayed. You can add a new materials list or edit an existing list as required. You can also add subcriteria to address more complex volume situations.
- Click the Quantity Takeoff Criteria field. Select the criteria. For more information, see Creating Quantity Takeoff Criteria.
- Select a Volume Calculation Method. For more information, see Sectional Volume Methods.
- Optionally, select the Curve Correction Tolerance check box and enter a curve correction value.
- Map the object names to apply to the materials by clicking in the Object Name column and selecting the appropriate object, such as a surface.
- Optionally, if the criteria uses the same surface and structure names as objects in the drawing, you can quickly map the names by clicking Map Objects With Same Name.
- Click OK.
The quantity takeoff calculation is performed and the material list is added to the sample line group properties.