Why are my results different when I compare a design strip in Floor Pro and PT?
When comparing results between the two programs, there are several things to consider in order to make an adequate comparison.
-Make sure that the load combinations include Prestressing or Hyperstatic actions. If you open a project in ADAPT-Floor Pro RC and later open in Floor Pro PT, the auto-generated load combinations from RC will remain. These do not include prestressing effects. To include prestressing, you can modify the combinations manually or you can go to CRITERIA>General>Analysis/Design options and toggle between codes. This will auto-generate the combinations and include the prestressing effects.
-When you import tendons from ADAPT-PT, they are automatically “disregarded” in the FEM analysis. To include the PT in the design, you must click on each tendon that has been imported and in the FEM tab, change from “Disregard” to “Consider.” You can also do this for all tendons by selecting all tendons and using the MODIFY ITEM PROPERTIES tab. On the left hand side you will see FEM and here you can also change to “Consider.”
-Make sure that the design criteria and other variables match in the Floor Pro and PT. Note that for Loading, Material and Criteria input there are options for both FEM and Strip Method. If the results are to compared, make sure that the design parameters are similar for each model.
-Results between Floor Pro and PT will not be exactly the same for such a structure, regardless of having identical input parameters. The analysis methods are different (FEM vs. Equivalent Frame Method) and variation in results is to be expected since in one method (EFM) general approximations are used in equating a 2D frame to exhibit some two-way slab action through torsional members.