Detailed instructions for building and submitting Geometry Test Case 3 for gbXML compliance.
This test can be explained first using the cutaway axonometric view in Figure 1 (the roof and the east exterior wall has been removed for clarity).
The test geometry consists of a double height space sharing an adjacent interior wall with four (4) single height spaces. It is expected that the user has defined this interior wall as a single wall in the CAD or BIM tool, and the wall is broken up into four separate interior walls by the tool. In addition, this test ensures that single floor plate separating sp-2-Space and sp-3-Space from sp-5-Space and sp-6-Space is broken into two interior floors/ceilings in the gbXML representation (interior floors/ceilings are the same thing in gbXML) to establish the correct neighboring relationships.
It is very important that the space names in your certification file must adhere to the naming convention shown in Figures 1, 2, 3, and 4. If the spaces are not named appropriately, then the validator software will not be able to achieve a Passing Score.
The remaining figures show actual coordinates and dimensions, where the dimensions are drawn at the centerline of the surface, per gbXML convention. Dimensions in the east-west direction are the X-dimension, and in the north-south are the Y-dimension. Z is in the final direction (up and down), as shown in Figure 4.
Figure 2 shows a plan view of the first floor, at a height of 3’ above height z=0.
Figure 3 shows a plan view of the second floor, at a height of 16’ above height z=0. Use the x-axis (east-west) dimensions in Figure 2 as a reference, as these have been removed from Figure 3 for brevity.
Figure 4 shows a section cut through the four single height spaces, where the section cut positions the user at the western side of the building looking east. The cut takes place at x=—20’.
Using these four images, it should be possible to reconstruct this test case in the vendor tool of choice and submit this test case to gbXML for validation towards Level 1 or 2 certification. Click here for the test case PDF document.