Revit Piping – Add Vertical vs Change Slope

When you are modelling your piping or circular duct systems in Revit and need to drop into an existing run there are two useful and usually straight forward ways to do it. Add Vertical and Change Slope will give you different results and here we will look at those, using pipe as an example.

Add Vertical Image

We’ll start with Add Vertical as that is the option generally set as a default. The screenshot below shows a pipe with a fall of 1:70 to which we will connect a pipe into from a different offset.

Pipe with a fall of 1.70 Image

Select the pipe you require and system to match existing run, for mine I’m going to also add a fall of 1:80 initially and then start off above (note: you will need to allow enough height to ensure the fitting can make the turn, if not you’ll get the usual error). The results are as below. As you can see, the gradient I chose has remained and the new pipe has dropped vertically into the existing run.

Results of Add Vertical Image

Next, we will look at the other option, Change Slope. I am going to use the same set up as previous, although this time the gradient I chose is immaterial, as it will change automatically. The results are as below. As you can see with this one it has adjusted the fall on the new run to connect straight into the main run.

Results of Change Slope Image

The results in section are as below.

Results of Change Slope 2 Image

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