Hello and thanks for your reply. I have added the fields manually with access office and i have checked from the database editor and the fields appear to be there. I have a question that is more technical. I have to insert reduced tees and the wall thickness of the pipe wall from the main and branch differ. I see that in the tee table it is only one field named wall_thickness_1 ***, i assume it defines the wall thickness for the main port. Do i have to add fields for the branch and run ports wall thicknesses or should i write on the wall_thickness_1 the greater value from the 3 ports (more like 2-main=run and branch)?
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