Problem:

Is it possible to change the gravity axis from y+ to y-?

One user has a piping system where it is showing upside down in the software since the gravity direction is in the y- and there are only y+ & z+ vertical axis selections available in the program

Solution:

 At this time, June 2020, no AutoPIPE does not have a feature to change the gravity direction. Only workaround is to rotate your model accordingly. 

See Also

Gravity load case

Bentley AutoPIPE