This should be a reasonable approach for flexural design. If you enter it as a custom section, Combine will have insufficient information available to perform the design checks. On the File menu, save the information as your new default database (this will make the new section available to to PROKON modules).
The Section Database module will automatically calculate the section properties for the entered beam section.
For the web thickness, use an average value that will give the same overall cross-sectional area. Scroll to the bottom of the table and enter the overall section dimensions of the castellated section on a new line. In the Section Database, go to the table for parallel flange (or taper flange) I-sections.However, you can do some of the design checks using Combine as follows: PROKON does not have a design module dedicated to castellated beams.
Can you use Combine to design a castellated beam?
