Generating Girth Table Resource Data

This task shows you how to generate girth table resource data.

You must define two sets of reference curves following two directions. For example, one set for curves representing long stiffeners and a second set for curves representing transversal stiffeners.
The resulting girth table will be the intersection of the two sets of geometries.
You must have already run Build Activity List for the Shell_STB_1.CATProduct.

  1. Double-click the Shell_STB_1.1 joining operation in the PPR tree.
    The Joining Operation dialog box appears.

  2. Select the Girth Table tab.
     

  3. Click in the Datum edge field in the left column labeled First set of curves. Using the Tool Palette, select any single edge of the plate on the side on which the stiffeners are located. The selected edge becomes red and the name of the curve is displayed in the Datum edge field.

  4. Click Add to select the desired curves (representing stiffeners, for example) that are perpendicular to the specified datum edge.

  5. Select a few profiles (while holding the Ctrl key on the keyboard) on the side of the plate where the datum was selected. Then click Finish in the Tools palette toolbar. The reference and the label of the created girth line are shown in the tab. The Finish command computes all intersections between the two list (N1 x N2 intersections max).

  6. Click in the Datum edge field in the right hand column labeled Second set of curves and select another appropriate edge.

    Then click Add to the desired curves (representing stiffeners, for example) that are perpendicular to the specified datum edge.

  7. Click the Preview button to view the Shell product with the girth tables generated as specified.

    Click Close to close the Preview window.

  8. Click OK in the Joining Operation dialog box when done.
    This will generate the girth table resource data (intersection points, girth distances, and so on).
    You can extract this data in workshop documents as described in:
    Extracting Girth Table Resource Sketches and Extracting Girth Table Data in XML File.
Note that the Girth Tables set is generated in the Resource List:
  If you select a profile not intersecting any of the plate edges, you can create girth tapes for such profiles by selecting any of the two possible datum edges. Girth tape is created from that datum edge to the far end of the surface with reference to the datum edge.
  In the same way, you can select a profile inline with the slot feature but not touching/intersecting it. As explained above, you can select the non-intersected edge as datum edge and create the girth tape. However, the girth tape is created up to the datum edge and not up to the slot edge.
  You can multi-select the available plate edges as datum edges. However, you must be careful to select the edges that have the continuity and tangency and their point of contact.