Good day. The nature of our work is incineration plant design. In my group, we have different standards for designing our stair posts. Our stair posts are constructed outside of the stair casing, and there are no available options to do this. If you can add our standard to your option, this would be a great help for us. Please find our attachments for visual confirmation. If you need additional information, please inform us anytime. Thank you very much.