HI ALL
There have been a lot of discussions around std. metric pipe sizes and Hydraflow Storm Sewers. For the record, Hydraflow can accept any pipe size. However, when invoked to design, it will select a US customary size and soft convert. Those can be edited of course.

Now then, can those of you who have posted here please reply with a list of your desired std. metric pipe sizes? Be sure to indicate your location.

Any help will be apprecited.

I didn't find the right solution from the Internet.

References:
[forums.autodesk.com]
unlock Exemples.
Any help will be appreciated.
Thank you.