Corridor Surface Bottom Material

I have been doing my own surface to add into my corridor. I then would do MSI from my created surface for create subgrade. This makes for a quick minus down ( doing the curb is a bit more work). Well, I have now started showing a co-worker the MSI command to create the bottom material surface. I had forgotten that any surface create from the corridor surface can not be used in the same corridor.

Finding ways to make a task done faster is something we all look for. It was a bit disappointing to not get the MSI surface used in the corridor. The office tech model are mainly for dirt quantity or hardly used to build the project. I would like to see a subgrade MSI command that can be used in corridors. To speed up corridor subgrade building.

For now I will use the explode surface command and send him those surface to make up for lost time.