Sloped pipework in Autodesk Revit has been around for some time now and is very useful for producing drainage/gravity piping systems. A question I get asked quite a bit during Revit MEP training courses is ‘Are there any easy ways to set a tee down or up at 45° from a main pipe run?. This article will go through one of the ways to achieve this with relatively little fuss.
When you use the default out of the box templates, there are already some pre-set slope values input into the ‘Mechanical Settings’ (shortcut MS), as you can see below.
If you require any additional slopes added to you project or wish to remove any, this can be done here. I would recommend doing this in your template (.rte) file so these slopes are already in existence when you create each project.
The one we are going to add here is a 45° slope which in the projects current unit format is a 1:1.
Once you’ve added the slopes you require, click ‘OK’ to exit the mechanical settings - note don’t press escape as it will exit without saving your changes.
Generally, in the UK templates the project units for pipe slope is set to ‘1 in Ratio’ as you will have noticed so far in this article. If you would rather work in decimal degrees, then you can change this by accessing the ‘Project Units’ (shortcut ‘UN’) on the ‘Manage’ tab and changing this as follows.
You can now see in the Mechanical Settings screenshot below that the slope format has changed. However, certain slopes are not so easy to figure out as they are set when using ratios.
So now to use this new slope value when teeing off an existing pipe run. First you will go into the pipe command and choose the required routing preference, system, offset and size etc, or if you are creating the same size as the original run you could select it and use ‘Create Similar’ (shortcut ‘CS’) to access the pipe command that way. We can then go to our sloped piping tools on the ribbon and set our slope options, see below.
A useful tool to use when routing a pipe with a slope is the ‘Slope Tooltip’ which will give you a heads up on what elevation you are currently at.
Once you are set up, simply click on the pipe you are setting off and route the new run as normal - in this example the pipe is going to be set down at 45° and then levelled off again by turning the slope off while you are routing the pipe. Take a look at the image below for what happens during routing and the finished run.
Once the pipe is routed and connected you can then fine tune the offsets to achieve what you require.
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