In OpenPlant IM CE, requirement is to convert the dimensions of pipeline & size of pipe inside the BOM to different unit. A two new variables plays the important role here which allows user to convert the unit from Metric to Imperial or vice versa. By default if we create an isometric in Metric workspace the results are as follows
Size in BOM
This wiki article will explain how to change the Metric dimensions & diameter as shown above to imperial units.
If above problem still persists, then please create a Service Request and contact the Bentley Product Advantage group. Please include a list of all relevant details to get in depth analysis for a solution or workaround