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Calculating slope of a line between 2 points

Question asked by cdbeyer on Feb 25, 2015
Latest reply on Jan 18, 2020 by abdulabnan

I have a sewer map with sewer lines connected to manholes.  Each manhole has a manhole number and invert elevation.  Is there a way to calculate the slope of the sewer lines by the connecting manhole invert elevations?  I have tried quite a few different things but haven't been able to make it work.  I tried doing a spatial join but it will only join the data to the line from 1 manhole instead of both connecting manholes.  Can someone help me out with this please?