The main function of the Grid Groups (Auto Grid Group) is to organize your Geogrid layout into “groups” to help the Contractor easily follow your retaining wall design.
Within a length of wall, there may be the first 10 panels with a grid length of 5 ft, then the next 15 panels with a grid length of 8 ft and a third group of panels with a grid length of 10 ft. Once the wall is designed, hit the “Grid Groups” button and Vespa will automatically review the grid layout information and classify them according to the grid length (groups A, B, C, etc.)
When the DXF output and PDF report is created, the elevation view of the Wall is displayed with these labels, making it straightforward for the contractor to know when to change the length of Grid.
To manually label a group of panels use the “Add Group”, button (beside the “Auto Grid Group” button). For example, if there is a portion of Wall (panels 10-23) that has a 3:1 slope above it, select this group of Panels (holding down the SHIFT key and selecting all the panels in that range by clicking on the first, then the last panel) and Label it “A” with a description of “This area has a 3H:1V Slope above it”. This will help detail and clarify the Elevation View for the contractor.